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Anharmonic phonon quasiparticle theory of zero-point and thermal shifts in insulators: Heat capacity, bulk modulus, and thermal expansion (2015)

Philip B. Allen

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): Philip B. Allen The quasiharmonic (QH) approximation uses harmonic vibrational frequencies ω Q , H ( V ) computed at volumes V near V 0 where the Born-Oppenheimer (BO) energy E el ( V ) is minimum. When this is used in the harmonic free energy, QH approximation gives a good zeroth order theory of thermal expansion and first-o… [Phys. Rev. B 92, 064106] Published Mon Aug 10, 2015

Schlagwort(e): Structure, structural phase transitions, mechanical properties, defects

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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Physical realization of the generalized fully frustrated XY model in an array of SFS junctions (2015)

S. E. Korshunov

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): S. E. Korshunov We show that a physical realization of the phase diagram proposed by Minnhagen et al. [ Phys. Rev. B 78 , 184432 (2008) ] for the so-called generalized fully frustrated XY model on a square lattice can be achieved in arrays of superconductor-ferromagnet-superconductor junctions near the transition of t… [Phys. Rev. B 92, 064506] Published Mon Aug 10, 2015

Schlagwort(e): Superfluidity and superconductivity

Print ISSN: 1098-0121

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Thema: Physik

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3

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Fragile structural transition in Mo_{3} Sb_{7} (2015)

J.-Q. Yan, M. A. McGuire, A. F. May, D. Parker, D. G. Mandrus, and B. C. Sales

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): J.-Q. Yan, M. A. McGuire, A. F. May, D. Parker, D. G. Mandrus, and B. C. Sales Mo 3 Sb 7 single crystals lightly doped with Cr, Ru, or Te are studied in order to explore the interplay between superconductivity, magnetism, and the cubic-tetragonal structural transition. The structural transition at 53 K is extremely sensitive to Ru or Te substitution which introduces additional el… [Phys. Rev. B 92, 064507] Published Mon Aug 10, 2015

Schlagwort(e): Superfluidity and superconductivity

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Thema: Physik

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Invisible K_{L} decays as a probe of new physics (2015)

S. N. Gninenko and N. V. Krasnikov

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): S. N. Gninenko and N. V. Krasnikov The decay K L → invisible has never been experimentally tested. In the Standard Model (SM), its branching ratio for the decay into two neutrinos is helicity suppressed and predicted to be Br ( K L → ν ν ¯ ) ≲ 10 − 10 . We consider several natural extensions of the SM, such as two-Higgs-doublet (2HDM), 2HDM and ligh… [Phys. Rev. D 92, 034009] Published Mon Aug 10, 2015

Schlagwort(e): Strong Interactions

Print ISSN: 0556-2821

Digitale ISSN: 1089-4918

Thema: Physik

Publiziert von American Physical Society (APS)

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Spin-orbit interaction, spin-phonon coupling, and anisotropy in the giant magnetoelastic effect in YMnO_{3} (2015)

Arpita Paul, Priya Sharma, and Umesh V. Waghmare

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-12

Beschreibung: Author(s): Arpita Paul, Priya Sharma, and Umesh V. Waghmare From the energies of various noncollinearly ordered spin configurations of YMnO 3 obtained using first-principles density functional theory and spin-orbit coupling, we demonstrate a remarkable magnetocrystalline anisotropy in the ordering of spins of Mn 3 + ions. We find that these spins are confined i… [Phys. Rev. B 92, 054106] Published Tue Aug 11, 2015

Schlagwort(e): Structure, structural phase transitions, mechanical properties, defects

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B [over ¯] ^{0} decay into D^{0} and f_{0} (500), f_{0} (980), a_{0} (980), ρ and B [over ¯] _{s}^{0} decay into D^{0} and κ(800), K^{*0} (2015)

Wei-Hong Liang, Ju-Jun Xie, and E. Oset

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-12

Beschreibung: Author(s): Wei-Hong Liang, Ju-Jun Xie, and E. Oset We make predictions for ratios of branching fractions of B ¯ 0 decays into D 0 and the scalar mesons f 0 ( 500 ) , f 0 ( 980 ) , a 0 ( 980 ) , plus B ¯ s 0 decay into D 0 and κ ( 800 ) . We also compare the π + π − production in the scalar channel with that observed in the ρ channel and make predictions for the B ¯ s 0 decay into … [Phys. Rev. D 92, 034008] Published Mon Aug 10, 2015

Schlagwort(e): Strong Interactions

Print ISSN: 0556-2821

Digitale ISSN: 1089-4918

Thema: Physik

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7

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Pressure-induced spin collapse of octahedrally coordinated Mn^{3+} in the tetragonal hydrogarnet henritermierite Ca_{3} Mn_{2} [SiO_{4} ]_{2} [O_{4} H_{4} ] (2015)

Alexandra Friedrich, Björn Winkler, Wolfgang Morgenroth, Alexander Perlov, and Victor Milman

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-07-30

Beschreibung: Author(s): Alexandra Friedrich, Björn Winkler, Wolfgang Morgenroth, Alexander Perlov, and Victor Milman The high-pressure behavior of natural henritermierite garnet with close to end-member composition Ca 3 Mn 2 [ SiO 4 ] 2 [ O 4 H 4 ] was studied at pressures up to 80 GPa using single-crystal synchrotron x-ray diffraction, Raman spectroscopy, and quantum-mechanical calculations based on density functional theory. … [Phys. Rev. B 92, 014117] Published Wed Jul 29, 2015

Schlagwort(e): Structure, structural phase transitions, mechanical properties, defects

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8

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Flux-vector model of spin noise in superconducting circuits: Electron versus nuclear spins and role of phase transition (2015)

S. La; Forest and Rogério de Sousa

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): S. LaForest and Rogério de Sousa Superconducting quantum interference devices (SQUIDs) and other superconducting circuits are limited by intrinsic flux noise with spectral density 1 / f α with α 〈 1 whose origin is believed to be due to spin impurities. Here, we present a theory of flux noise that takes into account the vectorial nat… [Phys. Rev. B 92, 054502] Published Mon Aug 03, 2015

Schlagwort(e): Superfluidity and superconductivity

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9

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Collective modes, ac response, and magnetic properties of the three-dimensional Dirac semimetal in the triplet superconducting state (2015)

B. Rosenstein, B. Ya. Shapiro, and I. Shapiro

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): B. Rosenstein, B. Ya. Shapiro, and I. Shapiro It was recently shown that conventional phonon-electron interactions may induce a triplet pairing state in time-reversal invariant three-dimensional Dirac semimetals. Starting from the microscopic model of the isotropic Dirac semimetal, the Ginzburg-Landau equations for the vector order parameter is… [Phys. Rev. B 92, 054503] Published Mon Aug 03, 2015

Schlagwort(e): Superfluidity and superconductivity

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Relativistic motion with superconducting qubits (2015)

S. Felicetti, C. Sabín, I. Fuentes, L. Lamata, G. Romero, and E. Solano

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): S. Felicetti, C. Sabín, I. Fuentes, L. Lamata, G. Romero, and E. Solano We show how the dynamical modulation of the qubit-field coupling strength in a circuit quantum electrodynamics architecture mimics the motion of the qubit at relativistic speeds. This allows us to propose a realistic experiment to detect microwave photons coming from simulated acceleration radiation… [Phys. Rev. B 92, 064501] Published Mon Aug 03, 2015

Schlagwort(e): Superfluidity and superconductivity

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