Volume 91, Issue 17

1 May 2015

Browse Issues:

HIGHLIGHTED ARTICLES

EDITORS' SUGGESTION

Complex magnetostructural order in the frustrated spinel ${LiInCr}_{4} O_{8}$

Gøran. J. Nilsen, Yoshihiko Okamoto, Takatsugu Masuda, Juan Rodriguez-Carvajal, Hannu Mutka, Thomas Hansen, and Zenji Hiroi

Phys. Rev. B 91, 174435 (2015) - Published 27 May, 2015

A magnetic insulator, LiInCr $_{4}$ O $_{8}$ realizes a so-called “breathing” pyrochlore lattice of $S = 3 / 2$ spins on corner-sharing tetrahedra that alternate in size. In this manuscript, a collaboration of researchers from Institut Laue-Langevin in Grenoble and Institute for Solid State Physics in Tokyo present a detailed neutron scattering study that elucidates the sequence of structural and magnetic phase transitions that occur at low temperatures in this material.

EDITORS' SUGGESTION

Wavelength-dependent optical enhancement of superconducting interlayer coupling in $L a_{1.885} B a_{0.115} Cu O_{4}$

E. Casandruc, D. Nicoletti, S. Rajasekaran, Y. Laplace, V. Khanna, G. D. Gu, J. P. Hill, and A. Cavalleri

Phys. Rev. B 91, 174502 (2015) - Published 5 May, 2015

Motivated by the appearance of optically induced superconductivity in the stripe-ordered La $_{1.885}$ Ba $_{0.115}$ CuO $_{4}$ cuprate, this group uses time-resolved THz spectroscopy to map out the enhancement of interlayer superconducting coupling as a function of both temperature and time delay, for different pump wavelengths and fluences.

EDITORS' SUGGESTION

Anomalous proximity effect and theoretical design for its realization

Satoshi Ikegaya, Yasuhiro Asano, and Yukio Tanaka

Phys. Rev. B 91, 174511 (2015) - Published 15 May, 2015

On the basis of novel insight in the physics of Majorana modes, the authors solve the microscopic mechanism of the anomalous proximity effect and propose an experimental setup for its observation.

ARTICLES

Structure, structural phase transitions, mechanical properties, defects

Strain tuning of electronic structure in $B i_{4} T i_{3} O_{12} − LaCo O_{3}$ epitaxial thin films

Woo Seok Choi and Ho Nyung Lee

Phys. Rev. B 91, 174101 (2015) - Published 8 May, 2015

Telegraph frequency noise in electromechanical resonators

F. Sun, J. Zou, Z. A. Maizelis, and H. B. Chan

Phys. Rev. B 91, 174102 (2015) - Published 11 May, 2015

Origin of interfacial polar order in incipient ferroelectrics

Yijia Gu, Nan Wang, Fei Xue, and Long-Qing Chen

Phys. Rev. B 91, 174103 (2015) - Published 11 May, 2015

Coexistence pressure for a martensitic transformation from theory and experiment: Revisiting the bcc-hcp transition of iron under pressure

N. A. Zarkevich and D. D. Johnson

Phys. Rev. B 91, 174104 (2015) - Published 12 May, 2015

Mechanism of the $α - ε$ phase transformation in iron

A. Dewaele, C. Denoual, S. Anzellini, F. Occelli, M. Mezouar, P. Cordier, S. Merkel, M. Véron, and E. Rausch

Phys. Rev. B 91, 174105 (2015) - Published 14 May, 2015

Defect complexes in congruent ${LiNbO}_{3}$ and their optical signatures

Yanlu Li, W. G. Schmidt, and S. Sanna

Phys. Rev. B 91, 174106 (2015) - Published 19 May, 2015

Ab initio prediction of vacancy properties in concentrated alloys: The case of fcc Cu-Ni

Xi Zhang and Marcel H. F. Sluiter

Phys. Rev. B 91, 174107 (2015) - Published 20 May, 2015

Spin and lattice excitations of a ${BiFeO}_{3}$ thin film and ceramics

S. Skiadopoulou, V. Goian, C. Kadlec, F. Kadlec, X. F. Bai, I. C. Infante, B. Dkhil, C. Adamo, D. G. Schlom, and S. Kamba

Phys. Rev. B 91, 174108 (2015) - Published 20 May, 2015

Multiphase phase field theory for temperature- and stress-induced phase transformations

Valery I. Levitas and Arunabha M. Roy

Phys. Rev. B 91, 174109 (2015) - Published 21 May, 2015

Plastic yielding in nanocrystalline Pd-Au alloys mimics universal behavior of metallic glasses

A. Leibner, C. Braun, J. Heppe, M. Grewer, and R. Birringer

Phys. Rev. B 91, 174110 (2015) - Published 21 May, 2015

Strain intermittency in shape-memory alloys

Xavier Balandraud, Noemi Barrera, Paolo Biscari, Michel Grédiac, and Giovanni Zanzotto

Phys. Rev. B 91, 174111 (2015) - Published 26 May, 2015

Understanding the martensitic phase transition of ${Ni}_{2} ({Mn}_{1 - x} {Fe}_{x}) Ga$ magnetic shape-memory alloys from theoretical calculations

Chun-Mei Li, Qing-Miao Hu, Rui Yang, Börje Johansson, and Levente Vitos

Phys. Rev. B 91, 174112 (2015) - Published 26 May, 2015

Structural stability of the Wadsley-type bronzes $β − {Ag}_{0.33} V_{2} O_{5}$ and $β − {Li}_{0.33} V_{2} O_{5}$ on compression: A breakdown of the two-leg ladder system in the nonsuperconducting high-pressure phase of $β − {Li}_{0.33} V_{2} O_{5}$

A. Grzechnik, Y. Ueda, T. Yamauchi, M. Hanfland, P. Hering, V. Potapkin, and K. Friese

Phys. Rev. B 91, 174113 (2015) - Published 27 May, 2015

Inhomogeneous, disordered, and partially ordered systems

Effective-medium theory for one-dimensional gratings

Shiwei Tang, Baocheng Zhu, Min Jia, Qiong He, Shulin Sun, Yongfeng Mei, and Lei Zhou

Phys. Rev. B 91, 174201 (2015) - Published 22 May, 2015

Testing statics-dynamics equivalence at the spin-glass transition in three dimensions

Luis Antonio Fernández and Víctor Martín-Mayor

Phys. Rev. B 91, 174202 (2015) - Published 26 May, 2015

Dynamics, dynamical systems, lattice effects

Coherent excitations at the neutral-ionic transition: Femtosecond dynamics on diabatic potential energy surfaces

Lorenzo Cavatorta, Anna Painelli, and Zoltán G. Soos

Phys. Rev. B 91, 174301 (2015) - Published 1 May, 2015

Efficient approach for modeling phonon transmission probability in nanoscale interfacial thermal transport

Zhun-Yong Ong and Gang Zhang

Phys. Rev. B 91, 174302 (2015) - Published 6 May, 2015

Polarization dependence of coherent phonon generation and detection in the three-dimensional topological insulator $B i_{2} T e_{3}$

O. V. Misochko, J. Flock, and T. Dekorsy

Phys. Rev. B 91, 174303 (2015) - Published 18 May, 2015

Effect of shape in near-field thermal transfer for periodic structures

Hamidreza Chalabi, Erez Hasman, and Mark L. Brongersma

Phys. Rev. B 91, 174304 (2015) - Published 26 May, 2015

Majorana braiding dynamics in nanowires

Cássio Sozinho Amorim, Kazuto Ebihara, Ai Yamakage, Yukio Tanaka, and Masatoshi Sato

Phys. Rev. B 91, 174305 (2015) - Published 26 May, 2015

Subwavelength ultrasonic circulator based on spatiotemporal modulation

Romain Fleury, Dimitrios L. Sounas, and Andrea Alù

Phys. Rev. B 91, 174306 (2015) - Published 28 May, 2015

Exact correspondence between Renyi entropy flows and physical flows

Mohammad H. Ansari and Yuli V. Nazarov

Phys. Rev. B 91, 174307 (2015) - Published 29 May, 2015

Magnetism

Magnetocrystalline anisotropy in ${UMn}_{2} {Ge}_{2}$ and related Mn-based actinide ferromagnets

David S. Parker, Nirmal Ghimire, John Singleton, J. D. Thompson, Eric D. Bauer, Ryan Baumbach, David Mandrus, Ling Li, and David J. Singh

Phys. Rev. B 91, 174401 (2015) - Published 4 May, 2015

Theory of inelastic neutron scattering in a field-induced spin-nematic state

Andrew Smerald, Hiroaki T. Ueda, and Nic Shannon

Phys. Rev. B 91, 174402 (2015) - Published 4 May, 2015

Enhanced magnetoresistance by monoatomic roughness in epitaxial Fe/MgO/Fe tunnel junctions

A. Duluard, C. Bellouard, Y. Lu, M. Hehn, D. Lacour, F. Montaigne, G. Lengaigne, S. Andrieu, F. Bonell, and C. Tiusan

Phys. Rev. B 91, 174403 (2015) - Published 6 May, 2015

Spectroscopic study of metallic magnetism in single-crystalline ${Nb}_{1 - y} {Fe}_{2 + y}$

D. Rauch, M. Kraken, F. J. Litterst, S. Süllow, H. Luetkens, M. Brando, T. Förster, J. Sichelschmidt, A. Neubauer, C. Pfleiderer, W. J. Duncan, and F. M. Grosche

Phys. Rev. B 91, 174404 (2015) - Published 6 May, 2015

Anisotropic field-induced melting of orbital ordered structure in $\Pr_{0.6} {Ca}_{0.4} {MnO}_{3}$

Huali Yang, Yiwei Liu, Jiandi Zhang, Xiangqun Zhang, Zhaohua Cheng, Yali Xie, Baomin Wang, Qingfeng Zhan, B. G. Shen, E. W. Plummer, and Run-Wei Li

Phys. Rev. B 91, 174405 (2015) - Published 6 May, 2015

Spin-transfer torque effects in the dynamic forced response of the magnetization of nanoscale ferromagnets in superimposed ac and dc bias fields in the presence of thermal agitation

D. J. Byrne, W. T. Coffey, Y. P. Kalmykov, S. V. Titov, and J. E. Wegrowe

Phys. Rev. B 91, 174406 (2015) - Published 7 May, 2015

Two-leg $SU (2 n)$ spin ladder: A low-energy effective field theory approach

P. Lecheminant and A. M. Tsvelik

Phys. Rev. B 91, 174407 (2015) - Published 7 May, 2015

Local character of the highest antiferromagnetic temperature of Ce systems in Sc-rich ${CeTi}_{1 - x} {Sc}_{x} Ge$

J. G. Sereni, P. Pedrazzini, M. Gómez Berisso, A. Chacoma, S. Encina, T. Gruner, N. Caroca-Canales, and C. Geibel

Phys. Rev. B 91, 174408 (2015) - Published 7 May, 2015

Magnon waveguide with nanoscale confinement constructed from topological magnon insulators

Alexander Mook, Jürgen Henk, and Ingrid Mertig

Phys. Rev. B 91, 174409 (2015) - Published 8 May, 2015

Magnetic field driven 2D-3D crossover in the $S = \frac{1}{2}$ frustrated chain magnet ${LiCuVO}_{4}$

L. A. Prozorova, S. S. Sosin, L. E. Svistov, N. Büttgen, J. B. Kemper, A. P. Reyes, S. Riggs, A. Prokofiev, and O. A. Petrenko

Phys. Rev. B 91, 174410 (2015) - Published 11 May, 2015

Magnetization reversal in epitaxial exchange-biased IrMn/FeGa bilayers with anisotropy geometries controlled by oblique deposition

Yao Zhang, Qingfeng Zhan, Zhenghu Zuo, Huali Yang, Xiaoshan Zhang, Guohong Dai, Yiwei Liu, Ying Yu, Jun Wang, Baomin Wang, and Run-Wei Li

Phys. Rev. B 91, 174411 (2015) - Published 12 May, 2015

High-field magnetic resonance of spinons and magnons in the triangular lattice $S = \frac{1}{2}$ antiferromagnet ${Cs}_{2} {CuCl}_{4}$

A. I. Smirnov, T. A. Soldatov, K. Yu. Povarov, and A. Ya. Shapiro

Phys. Rev. B 91, 174412 (2015) - Published 13 May, 2015

Thermodynamics of two-dimensional spin models with bimodal random-bond disorder

Baoming Tang, Deepak Iyer, and Marcos Rigol

Phys. Rev. B 91, 174413 (2015) - Published 14 May, 2015

Ultrafast demagnetization of metals: Collapsed exchange versus collective excitations

E. Carpene, H. Hedayat, F. Boschini, and C. Dallera

Phys. Rev. B 91, 174414 (2015) - Published 14 May, 2015

Ab initio investigation of light-induced relativistic spin-flip effects in magneto-optics

Ritwik Mondal, Marco Berritta, Karel Carva, and Peter M. Oppeneer

Phys. Rev. B 91, 174415 (2015) - Published 14 May, 2015

Structural and magnetic investigations of single-crystalline neodymium zirconate pyrochlore ${Nd}_{2} {Zr}_{2} O_{7}$

M. Ciomaga Hatnean, M. R. Lees, O. A. Petrenko, D. S. Keeble, G. Balakrishnan, M. J. Gutmann, V. V. Klekovkina, and B. Z. Malkin

Phys. Rev. B 91, 174416 (2015) - Published 14 May, 2015

Scaling relation for dangerously irrelevant symmetry-breaking fields

Tsuyoshi Okubo, Kosei Oshikawa, Hiroshi Watanabe, and Naoki Kawashima

Phys. Rev. B 91, 174417 (2015) - Published 15 May, 2015

Observation of spin-wave dark soliton pairs in yttrium iron garnet thin films

Zihui Wang, Mikhail Cherkasskii, Boris A. Kalinikos, and Mingzhong Wu

Phys. Rev. B 91, 174418 (2015) - Published 18 May, 2015

One-dimensional quantum antiferromagnetism in the $p$ -orbital ${CsO}_{2}$ compound revealed by electron paramagnetic resonance

Tilen Knaflič, Martin Klanjšek, Annette Sans, Peter Adler, Martin Jansen, Claudia Felser, and Denis Arčon

Phys. Rev. B 91, 174419 (2015) - Published 18 May, 2015

Crossover from conventional to inverse indirect magnetic exchange in the depleted Anderson lattice

Maximilian W. Aulbach, Irakli Titvinidze, and Michael Potthoff

Phys. Rev. B 91, 174420 (2015) - Published 18 May, 2015

NMR relaxation studies in doped poly-3-methylthiophene

K. Jugeshwar Singh, W. G. Clark, G. Gaidos, A. P. Reyes, P. Kuhns, J. D. Thompson, R. Menon, and K. P. Ramesh

Phys. Rev. B 91, 174421 (2015) - Published 19 May, 2015

Open Heisenberg chain under boundary fields: A magnonic logic gate

Gabriel T. Landi and Dragi Karevski

Phys. Rev. B 91, 174422 (2015) - Published 20 May, 2015

Antiferromagnetic coupling and impurity effects at junctions between ${Fe}_{3} O_{4}$ and Fe(001) layers

H. Yanagihara, H. Kamita, S. Honda, J. Inoue, Eiji Kita, H. Itoh, and Ko Mibu

Phys. Rev. B 91, 174423 (2015) - Published 20 May, 2015

Order-by-disorder near criticality in $X Y$ pyrochlore magnets

Behnam Javanparast, Alexandre G. R. Day, Zhihao Hao, and Michel J. P. Gingras

Phys. Rev. B 91, 174424 (2015) - Published 20 May, 2015

Observation of vortex dynamics in arrays of nanomagnets

W. Yu, P. S. Keatley, P. Gangmei, M. K. Marcham, T. H. J. Loughran, R. J. Hicken, S. A. Cavill, G. van der Laan, J. R. Childress, and J. A. Katine

Phys. Rev. B 91, 174425 (2015) - Published 22 May, 2015

Twisted phase of the orbital-dominant ferromagnet SmN in a GdN/SmN heterostructure

J. F. McNulty, E.-M. Anton, B. J. Ruck, F. Natali, H. Warring, F. Wilhelm, A. Rogalev, M. Medeiros Soares, N. B. Brookes, and H. J. Trodahl

Phys. Rev. B 91, 174426 (2015) - Published 22 May, 2015

Variational Monte Carlo investigation of $SU (N)$ Heisenberg chains

Jérôme Dufour, Pierre Nataf, and Frédéric Mila

Phys. Rev. B 91, 174427 (2015) - Published 26 May, 2015

Anomalous pressure dependence of magnetic ordering temperature in Tb revealed by resistivity measurements to 141 GPa: Comparison with Gd and Dy

J. Lim, G. Fabbris, D. Haskel, and J. S. Schilling

Phys. Rev. B 91, 174428 (2015) - Published 26 May, 2015

Consequences of an interface-concentrated perpendicular magnetic anisotropy in ultrathin CoFeB films used in magnetic tunnel junctions

J. Z. Sun

Phys. Rev. B 91, 174429 (2015) - Published 26 May, 2015

Spin rectification for collinear and noncollinear magnetization and external magnetic field configurations

Y. Huo, L. H. Bai, P. Hyde, Y. Z. Wu, and C.-M. Hu

Phys. Rev. B 91, 174430 (2015) - Published 26 May, 2015

Electric-field-induced strain effects on the magnetization of a $P r_{0.67} S r_{0.33} Mn O_{3}$ film

Bangmin Zhang, Cheng-Jun Sun, Weiming Lü, T. Venkatesan, Myung-Geun Han, Yimei Zhu, Jingsheng Chen, and Gan Moog Chow

Phys. Rev. B 91, 174431 (2015) - Published 26 May, 2015

Frustration and quantum entanglement in odd-membered ring-shaped chromium nanomagnets

P. Kozłowski

Phys. Rev. B 91, 174432 (2015) - Published 26 May, 2015

Aging at the spin-glass/ferromagnet transition: Monte Carlo simulations using graphics processing units

Markus Manssen and Alexander K. Hartmann

Phys. Rev. B 91, 174433 (2015) - Published 26 May, 2015

Equivalence of electronic and mechanical stresses in structural phase stabilization: A case study of indium wires on Si(111)

Sun-Woo Kim, Hyun-Jung Kim, Fangfei Ming, Yu Jia, Changgan Zeng, Jun-Hyung Cho, and Zhenyu Zhang

Phys. Rev. B 91, 174434 (2015) - Published 27 May, 2015

EDITORS' SUGGESTION

Complex magnetostructural order in the frustrated spinel ${LiInCr}_{4} O_{8}$

Gøran. J. Nilsen, Yoshihiko Okamoto, Takatsugu Masuda, Juan Rodriguez-Carvajal, Hannu Mutka, Thomas Hansen, and Zenji Hiroi

Phys. Rev. B 91, 174435 (2015) - Published 27 May, 2015

Torque magnetometry study of magnetically ordered state and spin reorientation in the quasi-one-dimensional $S = \frac{1}{2}$ Heisenberg antiferromagnet ${CuSb}_{2} O_{6}$

Mirta Herak, Dijana Žilić, Dubravka Matković Čalogović, and Helmuth Berger

Phys. Rev. B 91, 174436 (2015) - Published 27 May, 2015

Spin motive force driven by skyrmion dynamics in magnetic nanodisks

Yuhki Shimada and Jun-ichiro Ohe

Phys. Rev. B 91, 174437 (2015) - Published 28 May, 2015

Exchange interaction between $J$ multiplets

Naoya Iwahara and Liviu F. Chibotaru

Phys. Rev. B 91, 174438 (2015) - Published 28 May, 2015

First-principles calculations of exchange interactions, spin waves, and temperature dependence of magnetization in inverse-Heusler-based spin gapless semiconductors

A. Jakobsson, P. Mavropoulos, E. Şaşıoğlu, S. Blügel, M. Ležaić, B. Sanyal, and I. Galanakis

Phys. Rev. B 91, 174439 (2015) - Published 28 May, 2015

Spin-wave-induced spin torque in Rashba ferromagnets

Nobuyuki Umetsu, Daisuke Miura, and Akimasa Sakuma

Phys. Rev. B 91, 174440 (2015) - Published 29 May, 2015

Superfluidity and superconductivity

Origin of large thermal effect in the Casimir interaction between two graphene sheets

G. L. Klimchitskaya and V. M. Mostepanenko

Phys. Rev. B 91, 174501 (2015) - Published 5 May, 2015

EDITORS' SUGGESTION

Wavelength-dependent optical enhancement of superconducting interlayer coupling in $L a_{1.885} B a_{0.115} Cu O_{4}$

E. Casandruc, D. Nicoletti, S. Rajasekaran, Y. Laplace, V. Khanna, G. D. Gu, J. P. Hill, and A. Cavalleri

Phys. Rev. B 91, 174502 (2015) - Published 5 May, 2015

Electronic structures of ferromagnetic superconductors ${UGe}_{2}$ and UCoGe studied by angle-resolved photoelectron spectroscopy

Shin-ichi Fujimori, Takuo Ohkochi, Ikuto Kawasaki, Akira Yasui, Yukiharu Takeda, Tetsuo Okane, Yuji Saitoh, Atsushi Fujimori, Hiroshi Yamagami, Yoshinori Haga, Etsuji Yamamoto, and Yoshichika Ōnuki

Phys. Rev. B 91, 174503 (2015) - Published 7 May, 2015

Qubit dephasing due to quasiparticle tunneling

Sebastian Zanker and Michael Marthaler

Phys. Rev. B 91, 174504 (2015) - Published 7 May, 2015

Little-Parks oscillations in a single ring in the vicinity of the superconductor-insulator transition

Doron Gurovich, Konstantin S. Tikhonov, Diana Mahalu, and Dan Shahar

Phys. Rev. B 91, 174505 (2015) - Published 8 May, 2015

Pressure studies of the quantum critical alloy ${Ce}_{0.93} {Yb}_{0.07} {CoIn}_{5}$

Y. P. Singh, D. J. Haney, X. Y. Huang, B. D. White, M. B. Maple, M. Dzero, and C. C. Almasan

Phys. Rev. B 91, 174506 (2015) - Published 11 May, 2015

Field-induced interplanar magnetic correlations in the high-temperature superconductor ${La}_{1.88} {Sr}_{0.12} {CuO}_{4}$

A. T. Rømer, P. J. Ray, H. Jacobsen, L. Udby, B. M. Andersen, M. Bertelsen, S. L. Holm, N. B. Christensen, R. Toft-Petersen, M. Skoulatos, M. Laver, A. Schneidewind, P. Link, M. Oda, M. Ido, N. Momono, and K. Lefmann

Phys. Rev. B 91, 174507 (2015) - Published 11 May, 2015

Emergence of high-mobility minority holes in the electrical transport of the $Ba ({Fe}_{1 - x} {Mn}_{x} As)_{2}$ iron pnictides

T. Urata, Y. Tanabe, K. K. Huynh, S. Heguri, H. Oguro, K. Watanabe, and K. Tanigaki

Phys. Rev. B 91, 174508 (2015) - Published 11 May, 2015

Optical conductivity evidence of clean-limit superconductivity in LiFeAs

R. P. S. M. Lobo, G. Chanda, A. V. Pronin, J. Wosnitza, S. Kasahara, T. Shibauchi, and Y. Matsuda

Phys. Rev. B 91, 174509 (2015) - Published 11 May, 2015

Resistivity and magnetoresistance of FeSe single crystals under helium-gas pressure

S. Knöner, D. Zielke, S. Köhler, B. Wolf, Th. Wolf, L. Wang, A. Böhmer, C. Meingast, and M. Lang

Phys. Rev. B 91, 174510 (2015) - Published 12 May, 2015

EDITORS' SUGGESTION

Anomalous proximity effect and theoretical design for its realization

Satoshi Ikegaya, Yasuhiro Asano, and Yukio Tanaka

Phys. Rev. B 91, 174511 (2015) - Published 15 May, 2015

On the basis of novel insight in the physics of Majorana modes, the authors solve the microscopic mechanism of the anomalous proximity effect and propose an experimental setup for its observation.

Critical fields and vortex pinning in overdoped ${Ba}_{0.2} K_{0.8} {Fe}_{2} {As}_{2}$

B. Shen, M. Leroux, Y. L. Wang, X. Luo, V. K. Vlasko-Vlasov, A. E. Koshelev, Z. L. Xiao, U. Welp, W. K. Kwok, M. P. Smylie, A. Snezhko, and V. Metlushko

Phys. Rev. B 91, 174512 (2015) - Published 19 May, 2015

Superconductivity versus structural phase transition in the closely related ${Bi}_{2} {Rh}_{3.5} S_{2}$ and ${Bi}_{2} {Rh}_{3} S_{2}$

Udhara S. Kaluarachchi, Weiwei Xie, Qisheng Lin, Valentin Taufour, Sergey L. Bud'ko, Gordon J. Miller, and Paul C. Canfield

Phys. Rev. B 91, 174513 (2015) - Published 19 May, 2015