Physical Review Applied - Volume 14 Issue 3

EDITORS' SUGGESTION

LETTER

Parity-time Symmetry Based on Time Modulation

Huanan Li, Hady Moussa, Dimitrios Sounas, and Andrea Alù

Phys. Rev. Applied 14, 031002 (2020) - Published 11 September, 2020

Give and take: Conventionally a delicate balance between gain and loss is critical to implementing effects based on parity-time ( $P T$ ) symmetry, which hinders this approach in a variety of physical contexts. This study presents $P T$ symmetry in systems $w i t h o u t$ gain and loss, leveraging instead energy storage and release based on slow modulations in time. The authors induce unusual responses typical of $P T$ -symmetric systems in a fully $c o n s e r v a t i v e$ structure. These results pave the way to exploring $P T$ symmetry in quantum mechanical settings, and to innovative applications that can overcome current technological limitations of passive systems.

EDITORS' SUGGESTION

Seismic Imaging Method for Medical Ultrasound Systems

Daniela Theis and Ernesto Bonomi

Phys. Rev. Applied 14, 034020 (2020) - Published 9 September, 2020

Medical ultrasound usually implements ray-based imaging algorithms, in which the most severe limitation involves the implicit assumption of constant-velocity media. When there are tissues with different velocities—typical for the human body—, the image of the underlying targets is strongly degraded in placement and resolution, due to $p h a s e$ $a b e r r a t i o n$ . To address this problem, the authors look to concepts developed in the context of seismic prospecting, relying upon an undulatory description of the physical process. Laboratory assessment of this imaging strategy, even in the presence of an aberrant layer, reveals remarkable spatial resolution and highly accurate target placement.

EDITORS' SUGGESTION

On-Chip Microwave Filters for High-Impedance Resonators with Gate-Defined Quantum Dots

Patrick Harvey-Collard, Guoji Zheng, Jurgen Dijkema, Nodar Samkharadze, Amir Sammak, Giordano Scappucci, and Lieven M. K. Vandersypen

Phys. Rev. Applied 14, 034025 (2020) - Published 10 September, 2020

Circuit quantum electrodynamics with qubits based on semiconductor quantum dots can enable long-range two-qubit gates between distant spins, or improve gate-based charge sensing for readout. Compared to conventional resonators, high-impedance resonators improve the coupling to the qubits, but their losses to the quantum dot’s leads are also larger. This study implements on-chip filtering using high-kinetic-inductance nanowires and thin-film capacitors to mitigate this source of losses. These filters are very compact and easily extended to a large number of leads, all while preserving state-of-the-art resonator quality factors.

EDITORS' SUGGESTION

Magnetic State Control via Field-Angle-Selective Switching in Asymmetric Rings

D. Schönke, R.M. Reeve, H. Stoll, and M. Kläui

Phys. Rev. Applied 14, 034028 (2020) - Published 10 September, 2020

Switching the chirality of the vortex state in asymmetric ferromagnetic rings is interesting for multistate memory devices, logic elements, and stray-field-based rotation sensors. This study shows that different magnetic states can be configured by carefully tuning the magnetic field angle. Using time-resolved scanning electron microscopy with polarization analysis to image the magnetization dynamics of these rings, the authors detect competing switching pathways for certain field angles. These different pathways do not change the resulting magnetic states, though, which is advantageous for engineering reliable devices for a range of potential spintronic applications.

EDITORS' SUGGESTION

Role of Oxygen Defects in Conductive-Filament Formation in $Y_{2} O_{3}$ -Based Analog RRAM Devices as Revealed by Fluctuation Spectroscopy

Eszter Piros, Martin Lonsky, Stefan Petzold, Alexander Zintler, S.U. Sharath, Tobias Vogel, Nico Kaiser, Robert Eilhardt, Leopoldo Molina-Luna, Christian Wenger, Jens Müller, and Lambert Alff

Phys. Rev. Applied 14, 034029 (2020) - Published 11 September, 2020

Analog resistive memory devices based on yttrium oxide exhibit universal noise behavior, due to the intrinsically high density of oxygen defects in the functional material. Utilizing fluctuation spectroscopy, noise of approximately $1 / f$ type is found for resistance states both below and above the quantum conductance level. Moreover, the noise magnitude is reduced over repeated write/erase operations, a striking phenomenon that is explained as the consequence of the stabilization of the conducting filament via the consumption of nearby oxygen vacancies. This potential for “endurance training” makes the system promising for both nonvolatile memory and neuromorphic computing hardware.

EDITORS' SUGGESTION

Nanostructured Alkali-Metal Vapor Cells

T.F. Cutler, W.J. Hamlyn, J. Renger, K.A. Whittaker, D. Pizzey, I.G. Hughes, V. Sandoghdar, and C.S. Adams

Phys. Rev. Applied 14, 034054 (2020) - Published 21 September, 2020

The confinement of atoms at the nanoscale is of interest for a diverse range of applications, from spatially selective sensing on the submicrometer scale to emerging quantum technologies. This study describes a bespoke method for manufacturing robust vapor cells with arbitrary nanoscale-confinement geometries. The device is designed with versatile, high-NA optical access. Spectroscopy of Rb atoms in purpose-built cells yields important insight into the diffusion and spatial distribution of a thermal vapor confined to a nanochannel. This work offers routes toward engineering solutions for localized control of atom numbers for scalable quantum optical experiments.

EDITORS' SUGGESTION

Hypersensitive Tunable Josephson Escape Sensor for Gigahertz Astronomy

Federico Paolucci, Nadia Ligato, Vittorio Buccheri, Gaia Germanese, Pauli Virtanen, and Francesco Giazotto

Phys. Rev. Applied 14, 034055 (2020) - Published 21 September, 2020

In astrophysics and particle physics, interest is shifting from the TeV scale toward $μ$ eV phenomena, such as the cosmic microwave background, galaxy formation, and the search for dark matter. To this end, superconducting detectors are employed. This study exploits modulation of the escape temperature via current to demonstrate a Josephson escape sensor (JES). The JES promises a stunning noise-equivalent power of $10^{- 25}$ W/Hz $^{1 / 2}$ , and the possibility to detect single photons down to 2 GHz in frequency. This device could also have strong implications in quantum technology, from subterahertz communication and quantum computing to cryptography and quantum key distribution.

LETTER

Angle-Dispersive Metasurface for Axisymmetric Wavefront Manipulation over Continuous Incident Angles

Ying Li, Jun Yang, Zhiping Yin, Guangsheng Deng, Weien Lai, Xiong Wang, Dajun Zhang, and Qi Zhu

Phys. Rev. Applied 14, 031001 (2020) - Published 10 September, 2020

Axisymmetric wavefront manipulation is desirable for retroreflection, collimation, beam steering, and other applications in optics, but is not easily implemented with typical metasurfaces, which have an almost fixed phase gradient for various angles of incidence. This study uses meta-atoms that are tilted out of the plane to build an $a n g l e - d i s p e r s i v e$ metasurface with the required antisymmetric phase gradient plus antisymmetric angular phase dispersion, for axisymmetric wavefront manipulation. Its performance is demonstrated in both simulation and experiment.

EDITORS' SUGGESTION

LETTER

Parity-time Symmetry Based on Time Modulation

Huanan Li, Hady Moussa, Dimitrios Sounas, and Andrea Alù

Phys. Rev. Applied 14, 031002 (2020) - Published 11 September, 2020

Give and take: Conventionally a delicate balance between gain and loss is critical to implementing effects based on parity-time ( $P T$ ) symmetry, which hinders this approach in a variety of physical contexts. This study presents $P T$ symmetry in systems $w i t h o u t$ gain and loss, leveraging instead energy storage and release based on slow modulations in time. The authors induce unusual responses typical of $P T$ -symmetric systems in a fully $c o n s e r v a t i v e$ structure. These results pave the way to exploring $P T$ symmetry in quantum mechanical settings, and to innovative applications that can overcome current technological limitations of passive systems.

Distance Computation Based on Coupled Spin-Torque Oscillators: Application to Image Processing

Minsuk Koo, M.R. Pufall, Yong Shim, A.B. Kos, Gyorgy Csaba, Wolfgang Porod, W.H. Rippard, and Kaushik Roy

Phys. Rev. Applied 14, 034001 (2020) - Published 1 September, 2020

Dual-Channel Binary Gray-Image Display Enabled with Malus-Assisted Metasurfaces

Qi Dai, Nan Zhou, Liangui Deng, Juan Deng, Zile Li, and Guoxing Zheng

Phys. Rev. Applied 14, 034002 (2020) - Published 1 September, 2020

Leakage Suppression for Holonomic Quantum Gates

Bao-Jie Liu and Man-Hong Yung

Phys. Rev. Applied 14, 034003 (2020) - Published 1 September, 2020

Measuring Electric-Field-Induced Dipole Moments of Metal-Dielectric Janus Particles in a Nematic Liquid Crystal

Dinesh Kumar Sahu and Surajit Dhara

Phys. Rev. Applied 14, 034004 (2020) - Published 1 September, 2020

Direct Imaging of the ac Component of Pumped Spin Polarization with Element Specificity

S. Pile, M. Buchner, V. Ney, T. Schaffers, J. Lumetzberger, K. Lenz, R. Narkowicz, J. Lindner, H. Ohldag, and A. Ney

Phys. Rev. Applied 14, 034005 (2020) - Published 1 September, 2020

Effective Statistical Fringe Removal Algorithm for High-Sensitivity Imaging of Ultracold Atoms

Bo Song, Chengdong He, Zejian Ren, Entong Zhao, Jeongwon Lee, and Gyu-Boong Jo

Phys. Rev. Applied 14, 034006 (2020) - Published 2 September, 2020

Strain-Controlled Current Switching in Weyl Semimetals

S. M. Rafi-Ul-Islam, Zhuo Bin Siu, Chi Sun, and Mansoor B. A. Jalil

Phys. Rev. Applied 14, 034007 (2020) - Published 2 September, 2020

Large Piezoelectriclike Response from Inhomogeneously Deformed Silicon Crystals

Dongxia Tian, Yu Hou, Qi Pan, and Baojin Chu

Phys. Rev. Applied 14, 034008 (2020) - Published 2 September, 2020

Applying the Quantum Approximate Optimization Algorithm to the Tail-Assignment Problem

Pontus Vikstål, Mattias Grönkvist, Marika Svensson, Martin Andersson, Göran Johansson, and Giulia Ferrini

Phys. Rev. Applied 14, 034009 (2020) - Published 3 September, 2020

Improved Success Probability with Greater Circuit Depth for the Quantum Approximate Optimization Algorithm

Andreas Bengtsson, Pontus Vikstål, Christopher Warren, Marika Svensson, Xiu Gu, Anton Frisk Kockum, Philip Krantz, Christian Križan, Daryoush Shiri, Ida-Maria Svensson, Giovanna Tancredi, Göran Johansson, Per Delsing, Giulia Ferrini, and Jonas Bylander

Phys. Rev. Applied 14, 034010 (2020) - Published 3 September, 2020

Multiplexed Single Photons from Deterministically Positioned Nanowire Quantum Dots

Zhe-Xian Koong, Guillem Ballesteros-Garcia, Raphaël Proux, Dan Dalacu, Philip J. Poole, and Brian D. Gerardot

Phys. Rev. Applied 14, 034011 (2020) - Published 3 September, 2020

Spin-Dependent Charge-Carrier Recombination Processes in $Tris$ (8-Hydroxyquinolinato) Aluminum

H. Popli, X. Liu, T.H. Tennahewa, M.Y. Teferi, E. Lafalce, H. Malissa, Z.V. Vardeny, and C. Boehme

Phys. Rev. Applied 14, 034012 (2020) - Published 3 September, 2020

Optical Computation of Divergence Operation for Vector Fields

Yijie Lou, Yisheng Fang, and Zhichao Ruan

Phys. Rev. Applied 14, 034013 (2020) - Published 3 September, 2020

Modulation of Orbital-Angular-Momentum Symmetry of Nondiffractive Acoustic Vortex Beams and Realization Using a Metasurface

Xue Jiang, Dean Ta, and Weiqi Wang

Phys. Rev. Applied 14, 034014 (2020) - Published 8 September, 2020

Protocol for Light-Shift Compensation in a Continuous-Wave Microcell Atomic Clock

M. Abdel Hafiz, R. Vicarini, N. Passilly, C.E. Calosso, V. Maurice, J.W. Pollock, A.V. Taichenachev, V.I. Yudin, J. Kitching, and R. Boudot

Phys. Rev. Applied 14, 034015 (2020) - Published 8 September, 2020

Multifilamentary Character of Anticorrelated Capacitive and Resistive Switching in Memristive Structures Based on $(Co − Fe − B)_{x} ({Li Nb O}_{3})_{100 - x}$ Nanocomposite

M.N. Martyshov, A.V. Emelyanov, V.A. Demin, K.E. Nikiruy, A.A. Minnekhanov, S.N. Nikolaev, A.N. Taldenkov, A.V. Ovcharov, M. Yu. Presnyakov, A.V. Sitnikov, A.L. Vasiliev, P.A. Forsh, A.B. Granovsky, P.K. Kashkarov, M.V. Kovalchuk, and V.V. Rylkov

Phys. Rev. Applied 14, 034016 (2020) - Published 8 September, 2020

Spin Injection and Relaxation in p-Doped $(In, Ga) As / Ga As$ Quantum-Dot Spin Light-Emitting Diodes at Zero Magnetic Field

Alaa E. Giba, Xue Gao, Mathieu Stoffel, Xavier Devaux, Bo Xu, Xavier Marie, Pierre Renucci, Henri Jaffrès, Jean-Marie George, Guangwei Cong, Zhanguo Wang, Hervé Rinnert, and Yuan Lu

Phys. Rev. Applied 14, 034017 (2020) - Published 8 September, 2020

Self-Referencing Spectral Interferometric Probing of the Onset Time of Relativistic Transparency in Intense Laser-Foil Interactions

S.D.R. Williamson, R. Wilson, M. King, M. Duff, B. Gonzalez-Izquierdo, Z.E. Davidson, A. Higginson, N. Booth, S. Hawkes, D. Neely, R.J. Gray, and P. McKenna

Phys. Rev. Applied 14, 034018 (2020) - Published 8 September, 2020

Thermoelectricity in Quantum Hall Corbino Structures

Mariano Real, Daniel Gresta, Christian Reichl, Jürgen Weis, Alejandra Tonina, Paula Giudici, Liliana Arrachea, Werner Wegscheider, and Werner Dietsche

Phys. Rev. Applied 14, 034019 (2020) - Published 8 September, 2020

EDITORS' SUGGESTION

Seismic Imaging Method for Medical Ultrasound Systems

Daniela Theis and Ernesto Bonomi

Phys. Rev. Applied 14, 034020 (2020) - Published 9 September, 2020

Medical ultrasound usually implements ray-based imaging algorithms, in which the most severe limitation involves the implicit assumption of constant-velocity media. When there are tissues with different velocities—typical for the human body—, the image of the underlying targets is strongly degraded in placement and resolution, due to $p h a s e$ $a b e r r a t i o n$ . To address this problem, the authors look to concepts developed in the context of seismic prospecting, relying upon an undulatory description of the physical process. Laboratory assessment of this imaging strategy, even in the presence of an aberrant layer, reveals remarkable spatial resolution and highly accurate target placement.

Imaging with Nanometer Resolution Using Optically Active Defects in Silicon Carbide

Stefania Castelletto, Martina Barbiero, Mirren Charnley, Alberto Boretti, and Min Gu

Phys. Rev. Applied 14, 034021 (2020) - Published 9 September, 2020

Nanoscale Spin Injector Driven by a Microwave Voltage

A.I. Nikitchenko and N.A. Pertsev

Phys. Rev. Applied 14, 034022 (2020) - Published 9 September, 2020

VO₂ Substrate Effect on the Thermal Rectification of a Far-Field Radiative Diode

I.Y. Forero-Sandoval, J.A. Chan-Espinoza, J. Ordonez-Miranda, J.J. Alvarado-Gil, F. Dumas-Bouchiat, C. Champeaux, K. Joulain, Y. Ezzahri, J. Drevillon, C.L. Gomez-Heredia, and J.A. Ramirez-Rincon

Phys. Rev. Applied 14, 034023 (2020) - Published 9 September, 2020

Prediction of the Properties of the Rare-Earth Magnets ${Ce}_{2} {Fe}_{17 - x} {Co}_{x} CN$ : A Combined Machine-Learning and Ab Initio Study

Anita Halder, Samir Rom, Aishwaryo Ghosh, and Tanusri Saha-Dasgupta

Phys. Rev. Applied 14, 034024 (2020) - Published 9 September, 2020

EDITORS' SUGGESTION

On-Chip Microwave Filters for High-Impedance Resonators with Gate-Defined Quantum Dots

Patrick Harvey-Collard, Guoji Zheng, Jurgen Dijkema, Nodar Samkharadze, Amir Sammak, Giordano Scappucci, and Lieven M. K. Vandersypen

Phys. Rev. Applied 14, 034025 (2020) - Published 10 September, 2020

Circuit quantum electrodynamics with qubits based on semiconductor quantum dots can enable long-range two-qubit gates between distant spins, or improve gate-based charge sensing for readout. Compared to conventional resonators, high-impedance resonators improve the coupling to the qubits, but their losses to the quantum dot’s leads are also larger. This study implements on-chip filtering using high-kinetic-inductance nanowires and thin-film capacitors to mitigate this source of losses. These filters are very compact and easily extended to a large number of leads, all while preserving state-of-the-art resonator quality factors.

Probing the Spatial Impulse Response of Ultrahigh-Frequency Ultrasonic Transducers with Photoacoustic Waves

Qiang-Bing Lu, Tuo Liu, Lei Ding, Ming-Hui Lu, Jie Zhu, and Yan-Feng Chen

Phys. Rev. Applied 14, 034026 (2020) - Published 10 September, 2020

All-Optically Controlled Topological Transistor Based on $X enes$

Jun Zheng, Yang Xiang, Chunlei Li, Ruiyang Yuan, Feng Chi, and Yong Guo

Phys. Rev. Applied 14, 034027 (2020) - Published 10 September, 2020

EDITORS' SUGGESTION

Magnetic State Control via Field-Angle-Selective Switching in Asymmetric Rings

D. Schönke, R.M. Reeve, H. Stoll, and M. Kläui

Phys. Rev. Applied 14, 034028 (2020) - Published 10 September, 2020

Switching the chirality of the vortex state in asymmetric ferromagnetic rings is interesting for multistate memory devices, logic elements, and stray-field-based rotation sensors. This study shows that different magnetic states can be configured by carefully tuning the magnetic field angle. Using time-resolved scanning electron microscopy with polarization analysis to image the magnetization dynamics of these rings, the authors detect competing switching pathways for certain field angles. These different pathways do not change the resulting magnetic states, though, which is advantageous for engineering reliable devices for a range of potential spintronic applications.

EDITORS' SUGGESTION

Role of Oxygen Defects in Conductive-Filament Formation in $Y_{2} O_{3}$ -Based Analog RRAM Devices as Revealed by Fluctuation Spectroscopy

Eszter Piros, Martin Lonsky, Stefan Petzold, Alexander Zintler, S.U. Sharath, Tobias Vogel, Nico Kaiser, Robert Eilhardt, Leopoldo Molina-Luna, Christian Wenger, Jens Müller, and Lambert Alff

Phys. Rev. Applied 14, 034029 (2020) - Published 11 September, 2020

Analog resistive memory devices based on yttrium oxide exhibit universal noise behavior, due to the intrinsically high density of oxygen defects in the functional material. Utilizing fluctuation spectroscopy, noise of approximately $1 / f$ type is found for resistance states both below and above the quantum conductance level. Moreover, the noise magnitude is reduced over repeated write/erase operations, a striking phenomenon that is explained as the consequence of the stabilization of the conducting filament via the consumption of nearby oxygen vacancies. This potential for “endurance training” makes the system promising for both nonvolatile memory and neuromorphic computing hardware.

Effect of Oxygen Adsorption on Electrical and Thermoelectrical Properties of Monolayer ${Mo S}_{2}$

Swarup Deb, Pritam Bhattacharyya, Poulab Chakrabarti, Himadri Chakraborti, Kantimay Das Gupta, Alok Shukla, and Subhabrata Dhar

Phys. Rev. Applied 14, 034030 (2020) - Published 11 September, 2020

Voltage-Driven Magnetization Switching via Dirac Magnetic Anisotropy and Spin-Orbit Torque in Topological-Insulator-Based Magnetic Heterostructures

Takahiro Chiba and Takashi Komine

Phys. Rev. Applied 14, 034031 (2020) - Published 11 September, 2020

Bridging-Coupling Phenomenon in Linear Elastic Metamaterials by Exploiting Locally Resonant Metachain Isomers

Danilo Beli, Massimo Ruzzene, and Carlos De Marqui, Jr.

Phys. Rev. Applied 14, 034032 (2020) - Published 11 September, 2020

Single Free-Falling Droplet of Liquid Metal as a Source of Directional Terahertz Radiation

Petr M. Solyankin, Bogdan V. Lakatosh, Mikhail S. Krivokorytov, Ilia P. Tsygvintsev, Anton S. Sinko, Igor A. Kotelnikov, Vladimir A. Makarov, Jean-Louis Coutaz, Vyacheslav V. Medvedev, and Alexander P. Shkurinov

Phys. Rev. Applied 14, 034033 (2020) - Published 11 September, 2020

Analog-Quantum Feature Mapping for Machine-Learning Applications

Moslem Noori, Seyed Shakib Vedaie, Inderpreet Singh, Daniel Crawford, Jaspreet S. Oberoi, Barry C. Sanders, and Ehsan Zahedinejad

Phys. Rev. Applied 14, 034034 (2020) - Published 14 September, 2020

Integrated Multichannel Lithium Niobate Waveguides for Quantum Frequency Conversion

Ming-Yang Zheng, Quan Yao, Bin Wang, Xiu-Ping Xie, Qiang Zhang, and Jian-Wei Pan

Phys. Rev. Applied 14, 034035 (2020) - Published 14 September, 2020

Fourier Transform of the Orbital Angular Momentum of a Single Photon

Jaroslav Kysela, Xiaoqin Gao, and Borivoje Dakić

Phys. Rev. Applied 14, 034036 (2020) - Published 14 September, 2020

Anisotropic Thermoelectric Power Factor of Two-Dimensional Materials with Periodic Potential Barriers: The Wigner-Rode Formalism

Adithya Kommini and Zlatan Aksamija

Phys. Rev. Applied 14, 034037 (2020) - Published 14 September, 2020

Robust and Fast Holonomic Quantum Gates with Encoding on Superconducting Circuits

Tao Chen, Pu Shen, and Zheng-Yuan Xue

Phys. Rev. Applied 14, 034038 (2020) - Published 14 September, 2020

Strong Converse Magnetoelectric Effect in a Composite of Weakly Ferromagnetic Iron Borate and Ferroelectric Lead Zirconate Titanate

M. Popov, Y. Liu, V.L. Safonov, I.V. Zavislyak, V. Moiseienko, P. Zhou, Jiayu Fu, Wei Zhang, Jitao Zhang, Y. Qi, Tianjin Zhang, T. Zhou, P.J. Shah, M.E. McConney, M.R. Page, and G. Srinivasan

Phys. Rev. Applied 14, 034039 (2020) - Published 15 September, 2020

Mimicking Localized Surface Plasmons via Mie Resonances to Enhance Magnetic-Resonance-Imaging Applications

Carlo Rizza, Elia Palange, Marcello Alecci, and Angelo Galante

Phys. Rev. Applied 14, 034040 (2020) - Published 15 September, 2020

Electrically Tunable Superconductivity Through Surface Orbital Polarization

Maria Teresa Mercaldo, Paolo Solinas, Francesco Giazotto, and Mario Cuoco

Phys. Rev. Applied 14, 034041 (2020) - Published 15 September, 2020

Magnetic Damping in Epitaxial $Iron$ Alloyed with Vanadium and Aluminum

David A. Smith, Anish Rai, Youngmin Lim, Timothy Q. Hartnett, Arjun Sapkota, Abhishek Srivastava, Claudia Mewes, Zijian Jiang, Michael Clavel, Mantu K. Hudait, Dwight D. Viehland, Jean J. Heremans, Prasanna V. Balachandran, Tim Mewes, and Satoru Emori

Phys. Rev. Applied 14, 034042 (2020) - Published 15 September, 2020

$^{12} C (p, p^{'})^{12} C$ Reaction ( $E_{p} = 19.5 - 30$ MeV) for Active Interrogation of Special Nuclear Material

J. Nattress, F. Sutanto, P.-W. Fang, Y.-Z. Chen, A. Cheng, K.-Y. Chu, T.-S. Duh, H.-Y. Tsai, M.-W. Lin, and I. Jovanovic

Phys. Rev. Applied 14, 034043 (2020) - Published 16 September, 2020

Enhancing Graphene Plasmonic Device Performance via its Dielectric Environment

Amun Jarzembski, Michael Goldflam, Aleem Siddiqui, Isaac Ruiz, and Thomas E. Beechem

Phys. Rev. Applied 14, 034044 (2020) - Published 16 September, 2020

Flow-Driven Resonant Energy Systems

Alessandro Alabastri

Phys. Rev. Applied 14, 034045 (2020) - Published 17 September, 2020

Analytical Model for Photocurrent in Organic Solar Cells as a Function of the Charge-Transport Figure of Merit Including Second-Order Recombination

Daniel R.B. Amorim, Douglas J. Coutinho, Paulo B. Miranda, and Roberto M. Faria

Phys. Rev. Applied 14, 034046 (2020) - Published 17 September, 2020

Ultralow Switching-Current Density in All-Amorphous ${W − Hf / Co − Fe − B / Ta O}_{x}$ Films

K. Fritz, L. Neumann, and M. Meinert

Phys. Rev. Applied 14, 034047 (2020) - Published 17 September, 2020

Using Fourier-Plane Imaging Microscopy for Determining Transition-Dipole-Moment Orientations in Organic Light-Emitting Devices

Jongchan Kim, Haonan Zhao, Shaocong Hou, Mandeep Khatoniar, Vinod Menon, and Stephen R. Forrest

Phys. Rev. Applied 14, 034048 (2020) - Published 17 September, 2020

Systematic Design of Transmission-Type Polarization Converters Comprising Multilayered Anisotropic Metasurfaces

Filippo Costa and Michele Borgese

Phys. Rev. Applied 14, 034049 (2020) - Published 18 September, 2020

Kinetic Monte Carlo Study of Triplet-Triplet Annihilation in Conjugated Luminescent Materials

Rishabh Saxena, Tobias Meier, Stavros Athanasopoulos, Heinz Bässler, and Anna Köhler

Phys. Rev. Applied 14, 034050 (2020) - Published 18 September, 2020

Nonhysteretic Vortex Magnetic Tunnel Junction Sensor with High Dynamic Reserve

Guanyang He, Yiou Zhang, and Gang Xiao

Phys. Rev. Applied 14, 034051 (2020) - Published 18 September, 2020

Efficient Chiral-Domain-Wall Motion Driven by Spin-Orbit Torque in Metastable Platinum Films

Chirag Garg, See-Hun Yang, Leslie Thompson, Teya Topuria, Amir Capua, Brian Hughes, Timothy Phung, Panagiotis Ch. Filippou, and Stuart S.P. Parkin

Phys. Rev. Applied 14, 034052 (2020) - Published 21 September, 2020

Experimental Landau-Zener Tunneling for Wave Redirection in Nonlinear Waveguides

Chongan Wang, Ali Kanj, Alireza Mojahed, Sameh Tawfick, and Alexander F. Vakakis

Phys. Rev. Applied 14, 034053 (2020) - Published 21 September, 2020

EDITORS' SUGGESTION

Nanostructured Alkali-Metal Vapor Cells

T.F. Cutler, W.J. Hamlyn, J. Renger, K.A. Whittaker, D. Pizzey, I.G. Hughes, V. Sandoghdar, and C.S. Adams

Phys. Rev. Applied 14, 034054 (2020) - Published 21 September, 2020

The confinement of atoms at the nanoscale is of interest for a diverse range of applications, from spatially selective sensing on the submicrometer scale to emerging quantum technologies. This study describes a bespoke method for manufacturing robust vapor cells with arbitrary nanoscale-confinement geometries. The device is designed with versatile, high-NA optical access. Spectroscopy of Rb atoms in purpose-built cells yields important insight into the diffusion and spatial distribution of a thermal vapor confined to a nanochannel. This work offers routes toward engineering solutions for localized control of atom numbers for scalable quantum optical experiments.

EDITORS' SUGGESTION

Hypersensitive Tunable Josephson Escape Sensor for Gigahertz Astronomy

Federico Paolucci, Nadia Ligato, Vittorio Buccheri, Gaia Germanese, Pauli Virtanen, and Francesco Giazotto

Phys. Rev. Applied 14, 034055 (2020) - Published 21 September, 2020

In astrophysics and particle physics, interest is shifting from the TeV scale toward $μ$ eV phenomena, such as the cosmic microwave background, galaxy formation, and the search for dark matter. To this end, superconducting detectors are employed. This study exploits modulation of the escape temperature via current to demonstrate a Josephson escape sensor (JES). The JES promises a stunning noise-equivalent power of $10^{- 25}$ W/Hz $^{1 / 2}$ , and the possibility to detect single photons down to 2 GHz in frequency. This device could also have strong implications in quantum technology, from subterahertz communication and quantum computing to cryptography and quantum key distribution.

Local Spin Seebeck Imaging with a Scanning Thermal Probe

Alessandro Sola, Craig Barton, Vittorio Basso, Carsten Dubs, Massimo Pasquale, and Olga Kazakova

Phys. Rev. Applied 14, 034056 (2020) - Published 22 September, 2020

Subthreshold Erosion of an Organic Polymer Induced by Multiple Shots of an X-Ray Free-Electron Laser

T. Burian, J. Chalupský, V. Hájková, M. Toufarová, V. Vorlíček, S. Hau-Riege, J. Krzywinski, J.D. Bozek, C. Bostedt, A.T. Graf, U.F. Jastrow, S. Kreis, R.A. London, M. Messerschmidt, S. Moeller, R. Sobierajski, K. Tiedtke, M. de Grazia, T. Auguste, B. Carré, S. Guizard, H. Merdji, N. Medvedev, and L. Juha

Phys. Rev. Applied 14, 034057 (2020) - Published 22 September, 2020

Capturing Complex Behavior in Josephson Traveling-Wave Parametric Amplifiers

T. Dixon, J.W. Dunstan, G.B. Long, J.M. Williams, P.J. Meeson, and C.D. Shelly

Phys. Rev. Applied 14, 034058 (2020) - Published 22 September, 2020

Stabilization of Blue Emitters with Thermally Activated Delayed Fluorescence by the Steric Effect: A Case Study by means of Magnetic Field Effects

Chongguang Zhao, Fenggui Zhao, Kai Wang, Haomiao Yu, Tianyu Huang, Rui Wang, Caixia Zhang, Bin Hu, and Lian Duan

Phys. Rev. Applied 14, 034059 (2020) - Published 23 September, 2020

Minimizing Indoor Sound Energy with Tunable Metamaterial Surfaces

Sichao Qu and Ping Sheng

Phys. Rev. Applied 14, 034060 (2020) - Published 23 September, 2020

Laser-Induced Magnetization Precession in Individual Magnetoelastic Domains of a Multiferroic ${Co}_{40} {Fe}_{40} B_{20} / {Ba Ti O}_{3}$ Composite

L.A. Shelukhin, N. A. Pertsev, A.V. Scherbakov, D.L. Kazenwadel, D.A. Kirilenko, S.J. Hämäläinen, S. van Dijken, and A.M. Kalashnikova

Phys. Rev. Applied 14, 034061 (2020) - Published 23 September, 2020

Intrinsic Dissipation Due to Mode Coupling in Two-Dimensional-Material Resonators Revealed Through a Multiscale Approach

Subhadeep De, Arend van der Zande, and Narayana R. Aluru

Phys. Rev. Applied 14, 034062 (2020) - Published 24 September, 2020

Spin-Wave Diode and Circulator Based on Unidirectional Coupling

Krzysztof Szulc, Piotr Graczyk, Michał Mruczkiewicz, Gianluca Gubbiotti, and Maciej Krawczyk

Phys. Rev. Applied 14, 034063 (2020) - Published 25 September, 2020

Spin Polarization Compensation in Ferrimagnetic ${Co}_{1 − x} {Tb}_{x}$ / $Pt$ Bilayers Revealed by Spin Hall Magnetoresistance

Yaohan Xu, Dongdong Chen, Shucheng Tong, Huanjian Chen, Xuepeng Qiu, Dahai Wei, and Jianhua Zhao

Phys. Rev. Applied 14, 034064 (2020) - Published 25 September, 2020

Erratum: Extended Drude Model for Intraband-Transition-Induced Optical Nonlinearity [Phys. Rev. Applied 11, 064062 (2019)]

Heng Wang, Kang Du, Chuhao Jiang, Zhiqiang Yang, Lixia Ren, Wending Zhang, Soo Jin Chua, and Ting Mei

Phys. Rev. Applied 14, 039901 (2020) - Published 16 September, 2020

Volume 14, Issue 3

HIGHLIGHTED ARTICLES

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ERRATA