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Spin accumulation is a crucial but imprecise concept in spintronics. In metal-based spintronics it is characterized in terms of semiclassical distribution functions. In semiconductors with a strong spin-orbit coupling the spin accumulation…

介观与纳米尺度物理 · 物理学 2009-03-10 Henri Saarikoski , Gerrit E. W. Bauer

Spin-orbit coupling is relatively weak for electrons in bulk silicon, but enhanced interactions are reported in nanostructures such as the quantum dots used for spin qubits. These interactions have been attributed to various dissimilar…

We study the spin-spin coupling between two single-electron quantum dots due to the Coulomb and spin-orbit interactions, in the absence of tunneling between the dots. We find an anisotropic XY spin-spin interaction that is proportional to…

介观与纳米尺度物理 · 物理学 2009-11-11 Mircea Trif , Vitaly N. Golovach , Daniel Loss

We consider interacting electrons in a quantum wire in the case of a shallow confining potential and low electron density. In a certain range of densities, the electrons form a two-row (zigzag) Wigner crystal whose spin properties are…

介观与纳米尺度物理 · 物理学 2009-11-13 A. D. Klironomos , Julia S. Meyer , T. Hikihara , K. A. Matveev

The Heisenberg exchange interaction between neighboring quantum dots allows precise voltage control over spin dynamics, due to the ability to precisely control the overlap of orbital wavefunctions by gate electrodes. This allows the study…

Bilayer electron-hole systems with unequal electron and hole densities are expected to have exciton condensate ground states with spontaneous spin-polarization in both conduction and valence bands. In the absence of spin-orbit and…

介观与纳米尺度物理 · 物理学 2015-05-13 Y. -P. Shim , A. H. MacDonald

We consider strongly interacting systems of effective spins, subject to dissipative spin-flip processes associated with optical pumping. We predict the existence of novel magnetic phases in the steady-state of this system, which emerge due…

量子气体 · 物理学 2013-06-21 Tony E. Lee , Sarang Gopalakrishnan , Mikhail D. Lukin

It is demonstrated that there is anti-ferromagnetic spin-spin interaction between nearest electrons in the 2D Wigner crystal. This is also valid for the Wigner liquid - the state with destroyed long-range order but preserved short-range…

强关联电子 · 物理学 2007-05-23 I. V. Ponomarev , V. V. Flambaum , O. P. Sushkov

We review interaction effects in chaotic metallic nanoparticles. Their single-particle Hamiltonian is described by the proper random-matrix ensemble while the dominant interaction terms are invariants under a change of the single-particle…

介观与纳米尺度物理 · 物理学 2017-05-23 Y. Alhassid , K. N. Nesterov

Carbon based systems are prominent candidates for a solid-state spin-qubit due to weak spin-orbit and hyperfine interactions in combination with a low natural abundance of spin carrying isotopes. We consider the effect of the hyperfine…

介观与纳米尺度物理 · 物理学 2012-08-03 Moritz Fuchs , Valentin Rychkov , Björn Trauzettel

Ex-so-tic van der Waals heterostructures take advantage of the electrically tunable layer polarization to swap proximity exchange and spin-orbit coupling in the electronically active region. Perhaps the simplest example is Bernal bilayer…

材料科学 · 物理学 2025-06-30 Yaroslav Zhumagulov , Denis Kochan , Jaroslav Fabian

We theoretically investigate the spin-orbit interaction of electrons confined in the outer regions of square core-shell nanowires. The polygonal cross section leads to the accumulation of low-energy electrons in the corners and the…

介观与纳米尺度物理 · 物理学 2025-06-04 Anna Sitek , Tudor Gabriel Dumitru , Sigurdur I. Erlingsson , Andrei Manolescu

We present a theory of magnetotransport through an electronic orbital, where the electron spin interacts with a (sufficiently) large external spin via an exchange interaction. Using a semiclassical approximation, we derive a set of…

介观与纳米尺度物理 · 物理学 2014-10-22 Klemens Mosshammer , Tobias Brandes

We obtain a microscopic description of the interaction between electron spins in bulk semiconductors and in pairs of semiconductor quantum dots. Treating the k.p band mixing and the Coulomb interaction on the same footing, we obtain in the…

其他凝聚态物理 · 物理学 2007-05-23 Ş. C. Bădescu , Y. Lyanda-Geller , T. L. Reinecke

Pair spin-orbit interaction can emerge in strongly-interacting systems characterized by a large spin-orbit coupling. Here we study the role of this interaction in stabilizing ordered and unconventional superconducting phases. We find that,…

超导电性 · 物理学 2025-07-30 Feng Liu , Alessandro Principi

We explore the influence of contact interactions on a synthetically spin-orbit coupled system of two ultracold trapped atoms. Even though the system we consider is bosonic, we show that a regime exists in which the competition between the…

量子气体 · 物理学 2020-02-03 Ayaka Usui , Thomás Fogarty , Steve Campbell , Simon A. Gardiner , Thomas Busch

We discuss the problem of spin-orbit interaction in a 2D chaotic or diffusive quantum dot in the presence of exchange correlations. Spin-orbit scattering breaks spin rotation invariance, and in the crossover regime between different…

介观与纳米尺度物理 · 物理学 2009-11-11 Hakan E. Tureci , Y. Alhassid

We study an interplay between the orbital degeneracy and spin-orbit coupling giving rise to spin-orbital entangled states. As a specific example, we analyze the interaction of electrons occupying triply degenerate single-ion $t_{2g}$ levels…

材料科学 · 物理学 2022-07-26 S. V. Streltsov , F. V. Temnikov , K. I. Kugel , D. I. Khomskii

We study how the conductance of a quantum point contact is affected by spin-orbit interactions, for systems at zero temperature both with and without electron-electron interactions. In the presence of spin-orbit coupling, tuning the…

介观与纳米尺度物理 · 物理学 2015-01-07 Olga Goulko , Florian Bauer , Jan Heyder , Jan von Delft

Despite serious effort, the nature of the magnetic interactions and the role of electron-correlation effects in magnetic two-dimensional (2D) van der Waals materials remain elusive. Using CrI$_3$ as a model system, we show that the…

材料科学 · 物理学 2021-02-04 Liqin Ke , Mikhail I. Katsnelson