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Symmetry and correlations underlying hidden order in URu_{2}Si_{2} (2015)

Nicholas P. Butch, Michael E. Manley, Jason R. Jeffries, Marc Janoschek, Kevin Huang, M. Brian Maple, Ayman H. Said, Bogdan M. Leu, and Jeffrey W. Lynn

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-01-27

Description: Author(s): Nicholas P. Butch, Michael E. Manley, Jason R. Jeffries, Marc Janoschek, Kevin Huang, M. Brian Maple, Ayman H. Said, Bogdan M. Leu, and Jeffrey W. Lynn We experimentally investigate the symmetry in the hidden order (HO) phase of intermetallic URu 2 Si 2 by mapping the lattice and magnetic excitations via inelastic neutron and x-ray scattering measurements in the HO and high-temperature paramagnetic phases. At all temperatures, the excitations respect ... [Phys. Rev. B 91, 035128] Published Mon Jan 26, 2015

Keywords: Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

Published by American Physical Society (APS)

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Quantum speed limit and optimal control of many-boson dynamics (2015)

Ioannis Brouzos, Alexej I. Streltsov, Antonio Negretti, Ressa S. Said, Tommaso Caneva, Simone Montangero, and Tommaso Calarco

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2015-12-08

Description: Author(s): Ioannis Brouzos, Alexej I. Streltsov, Antonio Negretti, Ressa S. Said, Tommaso Caneva, Simone Montangero, and Tommaso Calarco We apply the concept of quantum speed limit (QSL)—the minimal time needed to perform a driven evolution—to complex interacting many-body systems where the effects of interactions have to be taken into account. We introduce a general strategy to eliminate the detrimental effects of the interparticle … [Phys. Rev. A 92, 062110] Published Mon Dec 07, 2015

Keywords: Fundamental concepts

Print ISSN: 1050-2947

Electronic ISSN: 1094-1622

Topics: Physics

Published by American Physical Society (APS)

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Inelastic x-ray scattering measurements of phonon dynamics in URu_{2} Si_{2} (2016)

D. R. Gardner, C. J. Bonnoit, R. Chisnell, A. H. Said, B. M. Leu, T. J. Williams, G. M. Luke, and Y. S. Lee

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2016-02-12

Description: Author(s): D. R. Gardner, C. J. Bonnoit, R. Chisnell, A. H. Said, B. M. Leu, T. J. Williams, G. M. Luke, and Y. S. Lee We report high-resolution inelastic x-ray scattering measurements of the acoustic phonons of URu 2 Si 2 . At all temperatures, the longitudinal acoustic phonon linewidths are anomalously broad at small wave vectors revealing a previously unknown anharmonicity. The phonon modes do not change significantl… [Phys. Rev. B 93, 075123] Published Thu Feb 11, 2016

Keywords: Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

Electronic ISSN: 1095-3795

Topics: Physics

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Spin-orbit coupled systems in the atomic limit: rhenates, osmates, iridates (2018)

Arun Paramekanti, David J. Singh, Bo Yuan, Diego Casa, Ayman Said, Young-June Kim, and A. D. Christianson

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2018-06-12

Description: Author(s): Arun Paramekanti, David J. Singh, Bo Yuan, Diego Casa, Ayman Said, Young-June Kim, and A. D. Christianson Motivated by RIXS experiments on a wide range of complex heavy oxides, including rhenates, osmates, and iridates, we discuss the theory of RIXS for site-localized t 2 g orbital systems with strong spin-orbit coupling. For such systems, we present exact diagonalization results for the spectrum at diffe... [Phys. Rev. B 97, 235119] Published Mon Jun 11, 2018

Keywords: Electronic structure and strongly correlated systems

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Topics: Physics

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Topology, edge states, and zero-energy states of ultracold atoms in one-dimensional optical superlattices with alternating on-site potentials or hopping coefficients (2018)

Yan He, Kevin Wright, Said Kouachi, and Chih-Chun Chien

American Physical Society (APS)

In: Physical Review A

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Publication Date: 2018-02-13

Description: Author(s): Yan He, Kevin Wright, Said Kouachi, and Chih-Chun Chien One-dimensional superlattices with periodic spatial modulations of onsite potentials or tunneling coefficients can exhibit a variety of properties associated with topology or symmetry. Recent developments of ring-shaped optical lattices allow a systematic study of those properties in superlattices w... [Phys. Rev. A 97, 023618] Published Mon Feb 12, 2018

Keywords: Matter waves and collective properties of cold atoms and molecules

Print ISSN: 1050-2947

Electronic ISSN: 1094-1622

Topics: Physics

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Wave-vector-dependent electron-phonon coupling and the charge-density-wave transition in TbTe_{3} (2015)

M. Maschek, S. Rosenkranz, R. Heid, A. H. Said, P. Giraldo-Gallo, I. R. Fisher, and F. Weber

American Physical Society (APS)

In: Physical Review B

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Publication Date: 2015-06-30

Description: Author(s): M. Maschek, S. Rosenkranz, R. Heid, A. H. Said, P. Giraldo-Gallo, I. R. Fisher, and F. Weber We present a high-energy-resolution inelastic x-ray scattering investigation of the soft phonon mode in the charge-density-wave (CDW) system TbT e 3 . We analyze our data based on lattice dynamical calculations using density-functional-perturbation theory and find clear evidence that strongly momentum-… [Phys. Rev. B 91, 235146] Published Mon Jun 29, 2015

Keywords: Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

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Topics: Physics

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