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相关论文: Spin-Orbit Interactions in Bilayer Exciton-Condens…

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In twisted bilayer semiconductors with arbitrary twisting angles, a chiral excitonic system can arise from the interlayer electron-hole Coulomb exchange interaction (F\"{o}rster coupling) that hybridizes the anisotropic intralayer excitons…

介观与纳米尺度物理 · 物理学 2024-09-23 Ci Li , Wang Yao

Spin transport properties of a coupled bilayer electron gas with Rashba spin-orbit coupling are studied. The definition of the spin currents in each layer as well as the corresponding continuity-like equations in the bilayer system are…

介观与纳米尺度物理 · 物理学 2007-12-22 Pei-Qing Jin , You-Quan Li

We investigate the spin accumulation effect in eccentric semiconductor multichannel rings with Rashba spin-orbit interaction and threaded by a magnetic flux. Due to the finite eccentricity, the spin polarization induced at the borders of…

介观与纳米尺度物理 · 物理学 2015-05-13 L. E. Segura , M. J. Sánchez

Spin-orbit effects on electron-electron interaction are studied theoretically. The corrections to the Coulomb interaction of quantum well electrons induced by the spin-orbit coupling are derived. The developed theory is applied to calculate…

介观与纳米尺度物理 · 物理学 2009-05-08 M. M. Glazov , V. D. Kulakovskii

Spin-orbit coupling with bosons gives rise to novel properties that are absent in usual bosonic systems. Under very general conditions, the conventional ground state wavefunctions of bosons are constrained by the "no-node" theorem to be…

量子气体 · 物理学 2013-06-27 Xiangfa Zhou , Yi Li , Zi Cai , Congjun Wu

We report distinct nonanalytic signatures in the spin-orbit entanglement of a 2D electron gas with Rashba interactions at integer values of the filling factor and at certain level crossings. The accompanying sharp changes in the bulk…

强关联电子 · 物理学 2016-05-16 Rona F. Barbarona , Francis N. C. Paraan

We predict two spin-dependent transport phenomena in two-dimensional electron systems, which are induced by spatially fluctuating Rashba spin-orbit interaction. When the electron gas is magnetized, the random Rashba interaction leads to the…

介观与纳米尺度物理 · 物理学 2012-11-26 V. K. Dugaev , M. Inglot , E. Ya. Sherman , J. Berakdar , J. Barnas

In a recent study of the magnetic properties of rare-earth systems the two extreme situations have been considered in which the crystalline electrostatic field is large or small with respect to the spin-orbit interaction. In the first case…

强关联电子 · 物理学 2010-08-17 Keisuke Hatada , Kuniko Hayakawa , Fabrizio Palumbo

We study the phase diagram of the inverted InAs/GaSb bilayer quantum wells. For small tunneling amplitude between the layers, we find that the system is prone to formation of an s-wave exciton condensate phase, where the spin-structure of…

介观与纳米尺度物理 · 物理学 2015-06-17 D. I. Pikulin , T. Hyart

Electrons with spin-orbit coupling moving in mesoscopic structures can often exhibit local spin polarization. In this paper, we study the influence of the Rashba coupling on the scattering of two-dimensional electrons from a circular disk.…

介观与纳米尺度物理 · 物理学 2009-11-13 Jr-Yu Yeh , Chung-Yu Mou , Ming-Che Chang

We study theoretically the low-energy hole states of Ge/Si core/shell nanowires. The low-energy valence band is quasidegenerate, formed by two doublets of different orbital angular momenta, and can be controlled via the relative shell…

介观与纳米尺度物理 · 物理学 2011-12-06 Christoph Kloeffel , Mircea Trif , Daniel Loss

We investigate the spin dynamics of electrons in quantum wells where the Rashba type of spin-orbit coupling is present in the form of random nanosize domains. We study the effect of magnetic field on the spin relaxation in these systems and…

介观与纳米尺度物理 · 物理学 2009-11-11 M. M. Glazov , E. Ya. Sherman

The quest for exotic quantum magnetic ground states, including the Kitaev spin liquid and quantum spin-ices, has led to the discovery of several quantum materials where low energy pseudospin-$1/2$ doublets arise from the splitting of…

强关联电子 · 物理学 2024-03-26 Sreekar Voleti , F David Wandler , Arun Paramekanti

We study the exchange interaction between two hole-spin qubits in a double quantum dot setup in a silicon nanowire in the presence of magnetic and electric fields. Based on symmetry arguments we show that there exists an effective spin that…

介观与纳米尺度物理 · 物理学 2020-07-10 Bence Hetényi , Christoph Kloeffel , Daniel Loss

We calculate spin Hall conductivities in the two dimensional electron systems with Rashba spin-orbit interaction. The salient feature is that, apart from the usual spin-Hall conductivity \sigma^z_{xy} which corresponds to the induction of…

介观与纳米尺度物理 · 物理学 2007-05-23 Ankur Sensharma , Sudhansu S. Mandal

We study theoretically the ultrafast spin dynamics of II-VI diluted magnetic quantum wells in the presence of spin-orbit interaction. We extend a recent study where it was shown that the spin-orbit interaction and the exchange sd coupling…

介观与纳米尺度物理 · 物理学 2015-10-28 Florian Ungar , Moritz Cygorek , Pablo I. Tamborenea , V. Martin Axt

The cooperative effect of Rashba spin-orbit coupling (SOC) and Coulomb attraction in stabilizing topological spin-triplet excitonic condensates (ECs) in two-dimensional electron-hole systems in external magnetic field is investigated by…

强关联电子 · 物理学 2026-03-11 Quoc-Huy Ninh , Huu-Nha Nguyen , Van-Nham Phan

We review recent theoretical developments about the role of spins, electron-electron interactions, and spin-orbit coupling in metal nanoparticles and semiconductor quantum dots. For a closed system, in the absence of spin-orbit coupling or…

介观与纳米尺度物理 · 物理学 2007-05-23 Yuval Oreg , P. W. Brouwer , X. Waintal , Bertrand I. Halperin

We illuminate the superconducting phases in [001]-grown-noncentrosymmetric quantum wells with an anisotropic spin-orbit coupling in the presence of on-site Hubbard interaction. Within the random phase approximation, we investigate the…

超导电性 · 物理学 2019-06-20 Mehdi Biderang , Mohammad-Hossein Zare , Alireza Akbari

Several recent experiments have reported an anomalous temperature dependence of the Coulomb drag effect in electron-hole bilayers. Motivated by these puzzling data, we study theoretically a low-density electron-hole bilayer, where electrons…

介观与纳米尺度物理 · 物理学 2016-06-08 Dmitry K. Efimkin , Victor Galitski