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Exchange energy and impurity band effects in the I-V characteristics of (Ga,Mn)As/GaAs spin injectors (2014)

Pedro Pereyra and Dieter Weiss

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2014-12-31

Beschreibung: Author(s): Pedro Pereyra and Dieter Weiss A different approach to calculate the I-V characteristics of p + (Ga,Mn)As/n + GaAs spin injectors is presented. The vanishing of the spin-extraction transmission coefficients at the spin-split valence-band edges leads us to predict a dip or plateau in the I-V characteristics of this kind of diodes. We ... [Phys. Rev. B 90, 245310] Published Tue Dec 30, 2014

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

Print ISSN: 1098-0121

Digitale ISSN: 1095-3795

Thema: Physik

Publiziert von American Physical Society (APS)

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Anyonic symmetries and topological defects in Abelian topological phases: An application to the ADE classification (2014)

Mayukh Nilay Khan, Jeffrey C. Y. Teo, and Taylor L. Hughes

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2014-12-31

Beschreibung: Author(s): Mayukh Nilay Khan, Jeffrey C. Y. Teo, and Taylor L. Hughes We study symmetries and defects of a wide class of two-dimensional Abelian topological phases characterized by Lie algebras. We formulate the symmetry group of all Abelian topological field theories. The symmetries relabel quasiparticles (or anyons) but leave exchange and braiding statistics unchang... [Phys. Rev. B 90, 235149] Published Tue Dec 30, 2014

Schlagwort(e): Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

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Thema: Physik

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3

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Rashba coupling and magnetic order in correlated helical liquids (2014)

Martin Hohenadler and Fakher F. Assaad

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2014-12-31

Beschreibung: Author(s): Martin Hohenadler and Fakher F. Assaad We study strongly correlated helical liquids with and without Rashba coupling using quantum Monte Carlo simulations of the Kane-Mele model with a Hubbard interaction at the edge. Independent of the Rashba coupling, we find that interactions enhance spin correlations and suppress the spectral weight ... [Phys. Rev. B 90, 245148] Published Tue Dec 30, 2014

Schlagwort(e): Electronic structure and strongly correlated systems

Print ISSN: 1098-0121

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Thema: Physik

Publiziert von American Physical Society (APS)

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Carrier dynamics in site- and structure-controlled InGaN/GaN quantum dots (2014)

Lei Zhang, Tyler A. Hill, Chu-Hsiang Teng, Brandon Demory, Pei-Cheng Ku, and Hui Deng

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2014-12-31

Beschreibung: Author(s): Lei Zhang, Tyler A. Hill, Chu-Hsiang Teng, Brandon Demory, Pei-Cheng Ku, and Hui Deng We report on the carrier dynamics in InGaN/GaN dot-in-nanowire quantum dots, revealed by a systematic mapping between the optical properties and structural parameters of the quantum dots. Such a study is made possible by using quantum dots with precisely controlled locations and sizes. We show that ... [Phys. Rev. B 90, 245311] Published Tue Dec 30, 2014

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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Thema: Physik

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Error Distributions on Large Entangled States with Non-Markovian Dynamics (2014)

Dara P. S. McCutcheon, Netanel H. Lindner, and Terry Rudolph

American Physical Society (APS)

In: Physical Review Letters

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Publikationsdatum: 2014-12-31

Beschreibung: Author(s): Dara P. S. McCutcheon, Netanel H. Lindner, and Terry Rudolph We investigate the distribution of errors on a computationally useful entangled state generated via the repeated emission from an emitter undergoing strongly non-Markovian evolution. For emitter-environment coupling of pure-dephasing form, we show that the probability that a particular patten of err... [Phys. Rev. Lett. 113, 260503] Published Tue Dec 30, 2014

Schlagwort(e): General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.

Print ISSN: 0031-9007

Digitale ISSN: 1079-7114

Thema: Physik

Publiziert von American Physical Society (APS)

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6

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Comparison of computer-algebra strong-coupling perturbation theory and dynamical mean-field theory for the Mott-Hubbard insulator in high dimensions (2014)

Martin Paech, Walter Apel, Eva Kalinowski, and Eric Jeckelmann

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2014-12-30

Beschreibung: Author(s): Martin Paech, Walter Apel, Eva Kalinowski, and Eric Jeckelmann We present a large-scale combinatorial-diagrammatic computation of high-order contributions to the strong-coupling Kato-Takahashi perturbation series for the Hubbard model in high dimensions. The ground-state energy of the Mott-insulating phase is determined exactly up to the 15th order in 1/U. The ... [Phys. Rev. B 90, 245147] Published Mon Dec 29, 2014

Schlagwort(e): Electronic structure and strongly correlated systems

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Thema: Physik

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7

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Compensating vacancy defects in Sn- and Mg-doped In_{2}O_{3} (2014)

E. Korhonen, F. Tuomisto, O. Bierwagen, J. S. Speck, and Z. Galazka

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2014-12-30

Beschreibung: Author(s): E. Korhonen, F. Tuomisto, O. Bierwagen, J. S. Speck, and Z. Galazka MBE-grown Sn- and Mg-doped epitaxial In 2 O 3 thin-film samples with varying doping concentrations have been measured using positron Doppler spectroscopy and compared to a bulk crystal reference. Samples were subjected to oxygen or vacuum annealing and the effect on vacancy type defects was studied. Re... [Phys. Rev. B 90, 245307] Published Mon Dec 29, 2014

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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Thema: Physik

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8

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Exciton-polariton oscillations in real space (2014)

T. C. H. Liew, Y. G. Rubo, and A. V. Kavokin

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2014-12-30

Beschreibung: Author(s): T. C. H. Liew, Y. G. Rubo, and A. V. Kavokin We introduce and model spin-Rabi oscillations based on exciton-polaritons in semiconductor microcavities. The phase and polarization of oscillations can be controlled by resonant coherent pulses and the propagation of oscillating domains gives rise to phase-dependent interference patterns in real sp... [Phys. Rev. B 90, 245309] Published Mon Dec 29, 2014

Schlagwort(e): Semiconductors II: surfaces, interfaces, microstructures, and related topics

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9

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GW quasiparticle band gap of the hybrid organic-inorganic perovskite CH_{3}NH_{3}PbI_{3}: Effect of spin-orbit interaction, semicore electrons, and self-consistency (2014)

Marina R. Filip and Feliciano Giustino

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2014-12-30

Beschreibung: Author(s): Marina R. Filip and Feliciano Giustino We study the quasiparticle band gap of the hybrid organic-inorganic lead halide perovskite CH 3 NH 3 PbI 3 , using many-body perturbation theory based on the GW approximation. We perform a systematic analysis of the band gap sensitivity to relativistic spin-orbit effects, to the description of semicore Pb... [Phys. Rev. B 90, 245145] Published Mon Dec 29, 2014

Schlagwort(e): Electronic structure and strongly correlated systems

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Roles of Hund's rule coupling in excitonic density-wave states (2014)

Tatsuya Kaneko and Yukinori Ohta

American Physical Society (APS)

In: Physical Review B

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Publikationsdatum: 2014-12-30

Beschreibung: Author(s): Tatsuya Kaneko and Yukinori Ohta Excitonic density-wave states realized by the quantum condensation of electron-hole pairs (or excitons) are studied in the two-band Hubbard model with Hund's rule coupling and the pair hopping term. Using the variational cluster approximation, we calculate the grand potential of the system and demon... [Phys. Rev. B 90, 245144] Published Mon Dec 29, 2014

Schlagwort(e): Electronic structure and strongly correlated systems

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