Volume 110, Issue 20

17 May 2013

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On the Cover

A single Gaussian beam is reflected off a phase-imprinting spatial light modulator to create three trapping beams used in an optical-box trap for Bose-Einstein condensation. Selected for a Synopsis in Physics.

From the article:

Bose-Einstein Condensation of Atoms in a Uniform Potential
Alexander L. Gaunt, Tobias F. Schmidutz, Igor Gotlibovych, Robert P. Smith, and Zoran Hadzibabic
Phys. Rev. Lett. 110, 200406 (2013)

HIGHLIGHTED ARTICLES

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Bose-Einstein Condensation of Atoms in a Uniform Potential

Alexander L. Gaunt, Tobias F. Schmidutz, Igor Gotlibovych, Robert P. Smith, and Zoran Hadzibabic

Phys. Rev. Lett. 110, 200406 (2013) - Published 16 May, 2013

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Midfield Wireless Powering of Subwavelength Autonomous Devices

Sanghoek Kim, John S. Ho, and Ada S. Y. Poon

Phys. Rev. Lett. 110, 203905 (2013) - Published 17 May, 2013

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Generating Far-Field Orbital Angular Momenta from Near-Field Optical Chirality

Yuri Gorodetski, Aurélien Drezet, Cyriaque Genet, and Thomas W. Ebbesen

Phys. Rev. Lett. 110, 203906 (2013) - Published 16 May, 2013

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Spin Hall Magnetoresistance Induced by a Nonequilibrium Proximity Effect

H. Nakayama, M. Althammer, Y.-T. Chen, K. Uchida, Y. Kajiwara, D. Kikuchi, T. Ohtani, S. Geprägs, M. Opel, S. Takahashi, R. Gross, G. E. W. Bauer, S. T. B. Goennenwein, and E. Saitoh

Phys. Rev. Lett. 110, 206601 (2013) - Published 13 May, 2013

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Onset of a Propagating Self-Sustained Spin Reversal Front in a Magnetic System

P. Subedi, S. Vélez, F. Macià, S. Li, M. P. Sarachik, J. Tejada, S. Mukherjee, G. Christou, and A. D. Kent

Phys. Rev. Lett. 110, 207203 (2013) - Published 13 May, 2013

FEATURED IN PHYSICS

Gapless Spin Liquid Ground State in the $S = 1 / 2$ Vanadium Oxyfluoride Kagome Antiferromagnet $[{NH}_{4}]_{2} [C_{7} H_{14} N] [V_{7} O_{6} F_{18}]$

L. Clark, J. C. Orain, F. Bert, M. A. De Vries, F. H. Aidoudi, R. E. Morris, P. Lightfoot, J. S. Lord, M. T. F. Telling, P. Bonville, J. P. Attfield, P. Mendels, and A. Harrison

Phys. Rev. Lett. 110, 207208 (2013) - Published 16 May, 2013

EDITORS' SUGGESTION

Calculation of High-Order Virial Coefficients with Applications to Hard and Soft Spheres

Richard J. Wheatley

Phys. Rev. Lett. 110, 200601 (2013) - Published 14 May, 2013

EDITORS' SUGGESTION

Observing Rydberg Atoms to Survive Intense Laser Fields

U. Eichmann, A. Saenz, S. Eilzer, T. Nubbemeyer, and W. Sandner

Phys. Rev. Lett. 110, 203002 (2013) - Published 13 May, 2013

EDITORS' SUGGESTION

Full Control of Nanoscale Optical Transmission with a Composite Metascreen

Francesco Monticone, Nasim Mohammadi Estakhri, and Andrea Alù

Phys. Rev. Lett. 110, 203903 (2013) - Published 14 May, 2013

EDITORS' SUGGESTION

Expansion Dynamics of Interacting Bosons in Homogeneous Lattices in One and Two Dimensions

J. P. Ronzheimer, M. Schreiber, S. Braun, S. S. Hodgman, S. Langer, I. P. McCulloch, F. Heidrich-Meisner, I. Bloch, and U. Schneider

Phys. Rev. Lett. 110, 205301 (2013) - Published 13 May, 2013

EDITORS' SUGGESTION

Composite Fermions with Tunable Fermi Contour Anisotropy

D. Kamburov, Yang Liu, M. Shayegan, L. N. Pfeiffer, K. W. West, and K. W. Baldwin

Phys. Rev. Lett. 110, 206801 (2013) - Published 13 May, 2013

EDITORS' SUGGESTION

Surface Plasmon Lasing Observed in Metal Hole Arrays

Frerik van Beijnum, Peter J. van Veldhoven, Erik Jan Geluk, Michiel J. A. de Dood, Gert W. ’t Hooft, and Martin P. van Exter

Phys. Rev. Lett. 110, 206802 (2013) - Published 13 May, 2013

LETTERS

General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

New Limit on Lorentz Violation Using a Double-Pass Optical Ring Cavity

Yuta Michimura, Nobuyuki Matsumoto, Noriaki Ohmae, Wataru Kokuyama, Yoichi Aso, Masaki Ando, and Kimio Tsubono

Phys. Rev. Lett. 110, 200401 (2013) - Published 13 May, 2013

Generic Mechanism of Optimal Energy Transfer Efficiency: A Scaling Theory of the Mean First-Passage Time in Exciton Systems

Jianlan Wu, Robert J. Silbey, and Jianshu Cao

Phys. Rev. Lett. 110, 200402 (2013) - Published 13 May, 2013

Floquet-Bloch Theory and Topology in Periodically Driven Lattices

A. Gómez-León and G. Platero

Phys. Rev. Lett. 110, 200403 (2013) - Published 14 May, 2013

Quantum Walk as a Generalized Measuring Device

Paweł Kurzyński and Antoni Wójcik

Phys. Rev. Lett. 110, 200404 (2013) - Published 14 May, 2013

Nonperturbative Effects of a Topological Theta Term on Principal Chiral Nonlinear Sigma Models in $2 + 1$ Dimensions

Cenke Xu and Andreas W. W. Ludwig

Phys. Rev. Lett. 110, 200405 (2013) - Published 17 May, 2013

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Bose-Einstein Condensation of Atoms in a Uniform Potential

Alexander L. Gaunt, Tobias F. Schmidutz, Igor Gotlibovych, Robert P. Smith, and Zoran Hadzibabic

Phys. Rev. Lett. 110, 200406 (2013) - Published 16 May, 2013

Protecting Conditional Quantum Gates by Robust Dynamical Decoupling

Ch. Piltz, B. Scharfenberger, A. Khromova, A. F. Varón, and Ch. Wunderlich

Phys. Rev. Lett. 110, 200501 (2013) - Published 16 May, 2013

EDITORS' SUGGESTION

Calculation of High-Order Virial Coefficients with Applications to Hard and Soft Spheres

Richard J. Wheatley

Phys. Rev. Lett. 110, 200601 (2013) - Published 14 May, 2013

Eigenvalue Statistics of Reduced Density Matrix during Driving and Relaxation

M. Mierzejewski, T. Prosen, D. Crivelli, and P. Prelovšek

Phys. Rev. Lett. 110, 200602 (2013) - Published 14 May, 2013

Elementary Particles and Fields

Constraints on Relativity Violations from Gamma-Ray Bursts

V. Alan Kostelecký and Matthew Mewes

Phys. Rev. Lett. 110, 201601 (2013) - Published 14 May, 2013

Abrikosov-Nielsen-Olesen String with Non-Abelian Moduli and Spin-Orbit Interactions

M. Shifman and A. Yung

Phys. Rev. Lett. 110, 201602 (2013) - Published 14 May, 2013

Holographic Stripes

Moshe Rozali, Darren Smyth, Evgeny Sorkin, and Jared B. Stang

Phys. Rev. Lett. 110, 201603 (2013) - Published 16 May, 2013

New Constraint on the Existence of the $μ^{+} \to e^{+} γ$ Decay

J. Adam et al. (MEG Collaboration)

Phys. Rev. Lett. 110, 201801 (2013) - Published 13 May, 2013

Search for Supersymmetry with Like-Sign Lepton-Tau Events at CDF

T. Aaltonen et al. (CDF Collaboration)

Phys. Rev. Lett. 110, 201802 (2013) - Published 16 May, 2013

Octet Spin Fractions and the Proton Spin Problem

P. E. Shanahan, A. W. Thomas, K. Tsushima, R. D. Young, and F. Myhrer

Phys. Rev. Lett. 110, 202001 (2013) - Published 15 May, 2013

Nuclear Physics

Center Domains and their Phenomenological Consequences

Masayuki Asakawa, Steffen A. Bass, and Berndt Müller

Phys. Rev. Lett. 110, 202301 (2013) - Published 15 May, 2013

First Measurements of Spin-Dependent Double-Differential Cross Sections and the Gerasimov-Drell-Hearn Integrand from ${}^{3}{\vec{H}} e (\vec{γ}, n) p p$ at Incident Photon Energies of 12.8 and 14.7 MeV

G. Laskaris et al.

Phys. Rev. Lett. 110, 202501 (2013) - Published 17 May, 2013

Atomic, Molecular, and Optical Physics

Ultrafast Spin-Motion Entanglement and Interferometry with a Single Atom

J. Mizrahi, C. Senko, B. Neyenhuis, K. G. Johnson, W. C. Campbell, C. W. S. Conover, and C. Monroe

Phys. Rev. Lett. 110, 203001 (2013) - Published 13 May, 2013

EDITORS' SUGGESTION

Observing Rydberg Atoms to Survive Intense Laser Fields

U. Eichmann, A. Saenz, S. Eilzer, T. Nubbemeyer, and W. Sandner

Phys. Rev. Lett. 110, 203002 (2013) - Published 13 May, 2013

Electron Shell Ionization of Atoms with Classical, Relativistic Scattering

N. Ekanayake, S. Luo, P. D. Grugan, W. B. Crosby, A. D. Camilo, C. V. McCowan, R. Scalzi, A. Tramontozzi, L. E. Howard, S. J. Wells, C. Mancuso, T. Stanev, M. F. Decamp, and B. C. Walker

Phys. Rev. Lett. 110, 203003 (2013) - Published 15 May, 2013

Autodetachment Dynamics of Acrylonitrile Anion Revealed by Two-Dimensional Electron Impact Spectra

K. Regeta and M. Allan

Phys. Rev. Lett. 110, 203201 (2013) - Published 13 May, 2013

Coherent Molecule Formation in Anharmonic Potentials Near Confinement-Induced Resonances

S. Sala, G. Zürn, T. Lompe, A. N. Wenz, S. Murmann, F. Serwane, S. Jochim, and A. Saenz

Phys. Rev. Lett. 110, 203202 (2013) - Published 16 May, 2013

Energy Loss Triggered by Atomic-Scale Lateral Force

Filippo Federici Canova, Shigeki Kawai, Christian de Capitani, Ken-ichi Kan’no, Thilo Glatzel, Bartosz Such, Adam S. Foster, and Ernst Meyer

Phys. Rev. Lett. 110, 203203 (2013) - Published 16 May, 2013

Sub-Poissonian Statistics of Rydberg-Interacting Dark-State Polaritons

C. S. Hofmann, G. Günter, H. Schempp, M. Robert-de-Saint-Vincent, M. Gärttner, J. Evers, S. Whitlock, and M. Weidemüller

Phys. Rev. Lett. 110, 203601 (2013) - Published 14 May, 2013

Collective Suppression of Linewidths in Circuit QED

Felix Nissen, Johannes M. Fink, Jonas A. Mlynek, Andreas Wallraff, and Jonathan Keeling

Phys. Rev. Lett. 110, 203602 (2013) - Published 15 May, 2013

Nonlinear Dynamics, Fluid Dynamics, Classical Optics, etc.

Green’s Function Retrieval and Passive Imaging from Correlations of Wideband Thermal Radiations

Matthieu Davy, Mathias Fink, and Julien de Rosny

Phys. Rev. Lett. 110, 203901 (2013) - Published 13 May, 2013

Experimental Verification of the Spectral Shift between Near- and Far-Field Peak Intensities of Plasmonic Infrared Nanoantennas

P. Alonso-González, P. Albella, F. Neubrech, C. Huck, J. Chen (陈佳宁), F. Golmar, F. Casanova, L. E. Hueso, A. Pucci, J. Aizpurua, and R. Hillenbrand

Phys. Rev. Lett. 110, 203902 (2013) - Published 14 May, 2013

EDITORS' SUGGESTION

Full Control of Nanoscale Optical Transmission with a Composite Metascreen

Francesco Monticone, Nasim Mohammadi Estakhri, and Andrea Alù

Phys. Rev. Lett. 110, 203903 (2013) - Published 14 May, 2013

Optical Resonator Analog of a Two-Dimensional Topological Insulator

G. Q. Liang and Y. D. Chong

Phys. Rev. Lett. 110, 203904 (2013) - Published 14 May, 2013

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Midfield Wireless Powering of Subwavelength Autonomous Devices

Sanghoek Kim, John S. Ho, and Ada S. Y. Poon

Phys. Rev. Lett. 110, 203905 (2013) - Published 17 May, 2013

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Generating Far-Field Orbital Angular Momenta from Near-Field Optical Chirality

Yuri Gorodetski, Aurélien Drezet, Cyriaque Genet, and Thomas W. Ebbesen

Phys. Rev. Lett. 110, 203906 (2013) - Published 16 May, 2013

Analysis of Synchronization in a Slowly Changing Environment: How Slow Coupling Becomes Fast Weak Coupling

Jonathan J. Rubin, Jonathan E. Rubin, and G. Bard Ermentrout

Phys. Rev. Lett. 110, 204101 (2013) - Published 13 May, 2013

Phase Description of Stochastic Oscillations

Justus T. C. Schwabedal and Arkady Pikovsky

Phys. Rev. Lett. 110, 204102 (2013) - Published 13 May, 2013

Stretching, Coalescence, and Mixing in Porous Media

Tanguy Le Borgne, Marco Dentz, and Emmanuel Villermaux

Phys. Rev. Lett. 110, 204501 (2013) - Published 13 May, 2013

Scale Invariance at the Onset of Turbulence in Couette Flow

Liang Shi, Marc Avila, and Björn Hof

Phys. Rev. Lett. 110, 204502 (2013) - Published 13 May, 2013

Apparent Fracture in Polymeric Fluids Under Step Shear

Okpeafoh S. Agimelen and Peter D. Olmsted

Phys. Rev. Lett. 110, 204503 (2013) - Published 16 May, 2013

Electrical Impedance Spectroscopy of Microchannel-Nanochannel Interface Devices

Jarrod Schiffbauer, Sinwook Park, and Gilad Yossifon

Phys. Rev. Lett. 110, 204504 (2013) - Published 17 May, 2013

Plasma and Beam Physics

Time-Resolved Characterization of the Formation of a Collisionless Shock

H. Ahmed, M. E. Dieckmann, L. Romagnani, D. Doria, G. Sarri, M. Cerchez, E. Ianni, I. Kourakis, A. L. Giesecke, M. Notley, R. Prasad, K. Quinn, O. Willi, and M. Borghesi

Phys. Rev. Lett. 110, 205001 (2013) - Published 14 May, 2013

Identification of Intermittent Multifractal Turbulence in Fully Kinetic Simulations of Magnetic Reconnection

E. Leonardis, S. C. Chapman, W. Daughton, V. Roytershteyn, and H. Karimabadi

Phys. Rev. Lett. 110, 205002 (2013) - Published 15 May, 2013

Condensed Matter: Structure, etc.

EDITORS' SUGGESTION

Expansion Dynamics of Interacting Bosons in Homogeneous Lattices in One and Two Dimensions

J. P. Ronzheimer, M. Schreiber, S. Braun, S. S. Hodgman, S. Langer, I. P. McCulloch, F. Heidrich-Meisner, I. Bloch, and U. Schneider

Phys. Rev. Lett. 110, 205301 (2013) - Published 13 May, 2013

Three-Dimensional Coherent X-Ray Diffraction Imaging of Molten Iron in Mantle Olivine at Nanoscale Resolution

Huaidong Jiang, Rui Xu, Chien-Chun Chen, Wenge Yang, Jiadong Fan, Xutang Tao, Changyong Song, Yoshiki Kohmura, Tiqiao Xiao, Yong Wang, Yingwei Fei, Tetsuya Ishikawa, Wendy L. Mao, and Jianwei Miao

Phys. Rev. Lett. 110, 205501 (2013) - Published 13 May, 2013

Nuclear Quadrupole Moments as a Microscopic Probe to Study the Motion of Atomic Tunneling Systems in Amorphous Solids

M. Bartkowiak, M. Bazrafshan, C. Fischer, A. Fleischmann, and C. Enss

Phys. Rev. Lett. 110, 205502 (2013) - Published 13 May, 2013

Thermal Diffuse Scattering as a Probe of Large-Wave-Vector Phonons in Silicon Nanostructures

Gokul Gopalakrishnan, Martin V. Holt, Kyle M. McElhinny, Josef W. Spalenka, David A. Czaplewski, Tobias U. Schülli, and Paul G. Evans

Phys. Rev. Lett. 110, 205503 (2013) - Published 14 May, 2013

Elementary Excitations and Crossover Phenomenon in Liquids

T. Iwashita, D. M. Nicholson, and T. Egami

Phys. Rev. Lett. 110, 205504 (2013) - Published 16 May, 2013

Systematic Mapping of Icosahedral Short-Range Order in a Melt-Spun ${Zr}_{36} {Cu}_{64}$ Metallic Glass

A. C. Y. Liu, M. J. Neish, G. Stokol, G. A. Buckley, L. A. Smillie, M. D. de Jonge, R. T. Ott, M. J. Kramer, and L. Bourgeois

Phys. Rev. Lett. 110, 205505 (2013) - Published 17 May, 2013

Activation Volume Tensor for Oxygen-Vacancy Migration in Strained ${CeO}_{2}$ Electrolytes

J. Hinterberg, T. Zacherle, and R. A. De Souza

Phys. Rev. Lett. 110, 205901 (2013) - Published 13 May, 2013

Entropic Stabilization of Nanoscale Voids in Materials under Tension

Danny Perez, Sheng-Nian Luo, Arthur F. Voter, and Timothy C. Germann

Phys. Rev. Lett. 110, 206001 (2013) - Published 13 May, 2013

Evidence of Trigonal Dangling Bonds at the Ge(111)/Oxide Interface by Electrically Detected Magnetic Resonance

S. Paleari, S. Baldovino, A. Molle, and M. Fanciulli

Phys. Rev. Lett. 110, 206101 (2013) - Published 15 May, 2013

Condensed Matter: Electronic Properties, etc.

Ferromagnetism in Itinerant Two-Dimensional $t_{2 g}$ Systems

Gang Chen and Leon Balents

Phys. Rev. Lett. 110, 206401 (2013) - Published 13 May, 2013

Thermodynamics of a Bad Metal–Mott Insulator Transition in the Presence of Frustration

J. Kokalj and Ross H. McKenzie

Phys. Rev. Lett. 110, 206402 (2013) - Published 14 May, 2013

Solid State Electrically Injected Exciton-Polariton Laser

Pallab Bhattacharya, Bo Xiao, Ayan Das, Sishir Bhowmick, and Junseok Heo

Phys. Rev. Lett. 110, 206403 (2013) - Published 15 May, 2013

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Spin Hall Magnetoresistance Induced by a Nonequilibrium Proximity Effect

H. Nakayama, M. Althammer, Y.-T. Chen, K. Uchida, Y. Kajiwara, D. Kikuchi, T. Ohtani, S. Geprägs, M. Opel, S. Takahashi, R. Gross, G. E. W. Bauer, S. T. B. Goennenwein, and E. Saitoh

Phys. Rev. Lett. 110, 206601 (2013) - Published 13 May, 2013

EDITORS' SUGGESTION

Composite Fermions with Tunable Fermi Contour Anisotropy

D. Kamburov, Yang Liu, M. Shayegan, L. N. Pfeiffer, K. W. West, and K. W. Baldwin

Phys. Rev. Lett. 110, 206801 (2013) - Published 13 May, 2013

EDITORS' SUGGESTION

Surface Plasmon Lasing Observed in Metal Hole Arrays

Frerik van Beijnum, Peter J. van Veldhoven, Erik Jan Geluk, Michiel J. A. de Dood, Gert W. ’t Hooft, and Martin P. van Exter

Phys. Rev. Lett. 110, 206802 (2013) - Published 13 May, 2013

Mesoscopic Fluctuations of Conductance of a Helical Edge Contaminated by Magnetic Impurities

Vadim Cheianov and Leonid I. Glazman

Phys. Rev. Lett. 110, 206803 (2013) - Published 14 May, 2013

Fermiology of the Strongly Spin-Orbit Coupled Superconductor ${Sn}_{1 - x} {In}_{x} Te$ : Implications for Topological Superconductivity

T. Sato, Y. Tanaka, K. Nakayama, S. Souma, T. Takahashi, S. Sasaki, Z. Ren, A. A. Taskin, Kouji Segawa, and Yoichi Ando

Phys. Rev. Lett. 110, 206804 (2013) - Published 17 May, 2013

Mechanism to Generate a Two-Dimensional Electron Gas at the Surface of the Charge-Ordered Semiconductor ${BaBiO}_{3}$

Verónica Vildosola, Francisco Güller, and Ana María Llois

Phys. Rev. Lett. 110, 206805 (2013) - Published 17 May, 2013

Anisotropy of the In-Plane Resistivity of Underdoped $Ba ({Fe}_{1 - x} {Co}_{x})_{2} {As}_{2}$ Superconductors Induced by Impurity Scattering in the Antiferromagnetic Orthorhombic Phase

S. Ishida, M. Nakajima, T. Liang, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, T. Kakeshita, Y. Tomioka, T. Ito, and S. Uchida

Phys. Rev. Lett. 110, 207001 (2013) - Published 13 May, 2013

Chiral Properties of Structure and Magnetism in ${Mn}_{1 − x} {Fe}_{x} Ge$ Compounds: When the Left and the Right are Fighting, Who Wins?

S. V. Grigoriev, N. M. Potapova, S.-A. Siegfried, V. A. Dyadkin, E. V. Moskvin, V. Dmitriev, D. Menzel, C. D. Dewhurst, D. Chernyshov, R. A. Sadykov, L. N. Fomicheva, and A. V. Tsvyashchenko

Phys. Rev. Lett. 110, 207201 (2013) - Published 13 May, 2013

Driven Skyrmions and Dynamical Transitions in Chiral Magnets

Shi-Zeng Lin, Charles Reichhardt, Cristian D. Batista, and Avadh Saxena

Phys. Rev. Lett. 110, 207202 (2013) - Published 13 May, 2013

FEATURED IN PHYSICS

EDITORS' SUGGESTION

Onset of a Propagating Self-Sustained Spin Reversal Front in a Magnetic System

P. Subedi, S. Vélez, F. Macià, S. Li, M. P. Sarachik, J. Tejada, S. Mukherjee, G. Christou, and A. D. Kent

Phys. Rev. Lett. 110, 207203 (2013) - Published 13 May, 2013

Anharmonicity due to Electron-Phonon Coupling in Magnetite

Moritz Hoesch, Przemysław Piekarz, Alexey Bosak, Mathieu Le Tacon, Michael Krisch, Andrzej Kozłowski, Andrzej M. Oleś, and Krzysztof Parlinski

Phys. Rev. Lett. 110, 207204 (2013) - Published 13 May, 2013

Spin-State Crossover Model for the Magnetism of Iron Pnictides

Jiří Chaloupka and Giniyat Khaliullin

Phys. Rev. Lett. 110, 207205 (2013) - Published 14 May, 2013

Thermal Phase Transitions in Artificial Spin Ice

Demian Levis, Leticia F. Cugliandolo, Laura Foini, and Marco Tarzia

Phys. Rev. Lett. 110, 207206 (2013) - Published 14 May, 2013

Columnar Antiferromagnetic Order and Spin Supersolid Phase on the Extended Shastry-Sutherland Lattice

Keola Wierschem and Pinaki Sengupta

Phys. Rev. Lett. 110, 207207 (2013) - Published 17 May, 2013

FEATURED IN PHYSICS

Gapless Spin Liquid Ground State in the $S = 1 / 2$ Vanadium Oxyfluoride Kagome Antiferromagnet $[{NH}_{4}]_{2} [C_{7} H_{14} N] [V_{7} O_{6} F_{18}]$

L. Clark, J. C. Orain, F. Bert, M. A. De Vries, F. H. Aidoudi, R. E. Morris, P. Lightfoot, J. S. Lord, M. T. F. Telling, P. Bonville, J. P. Attfield, P. Mendels, and A. Harrison

Phys. Rev. Lett. 110, 207208 (2013) - Published 16 May, 2013