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Electronic transport in closed loop structures is addressed within a tight-binding formalism and in the presence of both the Rashba and Dresselhaus spin-orbit interactions. It has been shown that any one of the spin-orbit fields can be…

介观与纳米尺度物理 · 物理学 2012-07-30 Shreekantha Sil , Santanu K. Maiti , Arunava Chakrabarti

A model with both Rashba and Dresselhaus spin orbit (SO) couplings and Hubbard electron-electron interaction is studied on planar strips at quarter filling at zero temperature in the clean limit. In the absence of Hubbard repulsion and at…

强关联电子 · 物理学 2018-02-06 Jose A. Riera

An effective interaction approach is used to describe the interactions between the spin 0 or spin 1/2 dark matter particle and the degrees of freedom of the standard model. This approach is applicable to those models in which the dark…

高能物理 - 唯象学 · 物理学 2015-06-03 Kingman Cheung , Po-Yan Tseng , Yue-Lin S. Tsai , Tzu-Chiang Yuan

Spintronics in halide perovskites has drawn significant attention in recent years, due to highly tunable spin-orbit fields and intriguing interplay with lattice symmetry. Spin lifetime -- a key parameter that determines the applicability of…

A 2D square, two-bands, strongly correlated and non-integrable system is analysed exactly in the presence of many-body spin-orbit interactions via the method of Positive Semidefinite Operators. The deduced exact ground states in the high…

强关联电子 · 物理学 2020-02-13 Nóra Kucska , Zsolt Gulácsi

Coherent rotations of single spin-based qubits may be accomplished electrically at fixed Zeeman energy with a qubit defined solely within a single electrostatically-defined quantum dot; the $g$-factor and the external magnetic field are…

介观与纳米尺度物理 · 物理学 2007-05-23 Jordan Kyriakidis , Stephen J. Penney

Cubic interactions of massive and partially-massless totally-symmetric higher-spin fields in any constant-curvature background of dimension greater than three are investigated. Making use of the ambient-space formalism, the consistency…

高能物理 - 理论 · 物理学 2015-06-04 Euihun Joung , Luca Lopez , Massimo Taronna

The photon helicity may be mapped to a spin-1/2, whereby we put forward an intrinsic interaction between a polarized light beam as a ``photon spin current'' and a pure spin current in a semiconductor, which arises from the spin-orbit…

介观与纳米尺度物理 · 物理学 2008-07-16 Jing Wang , Bang-Fen Zhu , Ren-Bao Liu

Using group theory and Kane-like $\mathbf{k\cdot p}$ model together with the L\"owdining partition method, we derive the expressions of spin-orbit coupling of electrons and holes, including the linear-$k$ Rashba term due to the intrinsic…

材料科学 · 物理学 2008-11-13 J. Y. Fu , M. W. Wu

Rashba and linear Dresselhaus interactions are believed to yield dominant contribution to the spin splitting of two-dimensional electrons in the quantum wells based on A$_3$B$_5$ compounds. We show that the interfacial spin-orbit…

介观与纳米尺度物理 · 物理学 2018-03-12 Zh. A. Devizorova , V. A. Volkov

Spin-orbit interaction is investigated in a dual gated InAs/GaSb quantum well. Using an electric field the quantum well can be tuned between a single carrier regime with exclusively electrons as carriers and a two-carriers regime where…

Light carries spin and orbital angular momentum. These dynamical properties are determined by the polarization and spatial degrees of freedom of light. Modern nano-optics, photonics, and plasmonics, tend to explore subwavelength scales and…

光学 · 物理学 2016-11-22 K. Y. Bliokh , F. J. Rodriguez-Fortuno , F. Nori , A. V. Zayats

The Rashba and Dresselhaus spin-orbit interactions are both shown to yield the low temperature spin-Hall effect for strongly localized electrons coupled to phonons. A frequency-dependent electric field ${\bf E}(\omega)$ generates a…

介观与纳米尺度物理 · 物理学 2009-11-11 O. Entin-Wohlman , A. Aharony , Y. M. Galperin , V. I. Kozub , V. Vinokur

Transition metal compounds with the $(t_{2g})^4$ electronic configuration are expected to be nonmagnetic atomic singlets both in the weakly interacting regime due to spin-orbit coupling, as well as in the Coulomb dominated regime with…

强关联电子 · 物理学 2017-01-16 Christopher Svoboda , Mohit Randeria , Nandini Trivedi

We investigate ramifications of the persistent spin helix symmetry in two-dimensional hole gases in the conductance of disordered mesoscopic systems. To this end we extend previous models by going beyond the axial approximation for III-V…

介观与纳米尺度物理 · 物理学 2014-11-26 Tobias Dollinger , Michael Kammermeier , Andreas Scholz , Paul Wenk , R. Winkler , John Schliemann , Klaus Richter

The time evolution of a local spin excitation in a (001)-confined two-dimensional electron gas subjected to Rashba and Dresselhaus spin-orbit interactions of similar strength is investigated theoretically and compared with experimental…

介观与纳米尺度物理 · 物理学 2015-06-18 G. Salis , M. P. Walser , P. Altmann , C. Reichl , W. Wegscheider

Spin-singlet orders are studied for the antiferromagnetic Heisenberg model with spin $S$>1/2 on a breathing pyrochlore lattice, where tetrahedron units are weakly coupled and exchange constants have two values $0<J' \ll J$. The ground state…

强关联电子 · 物理学 2017-02-16 Hirokazu Tsunetsugu

One-body mechanisms of spin splitting of the energy spectrum of 2D electrons in a one-side doped (001) GaAs/Al$_x$Ga$_{1-x}$As quantum well have been studied theoretically and experimentally. The interfacial spin splitting has been shown to…

介观与纳米尺度物理 · 物理学 2014-10-10 Zh. A. Devizorova , A. V. Shchepetilnikov , Yu. A. Nefyodov , V. A. Volkov , I. V. Kukushkin

The dynamical spin fluctuations in a two-dimensional square lattice in its paramagnetic phase are examined within the framework of Random Phase Approximation(RPA). Itinerant carriers with spin interact with each other via an…

凝聚态物理 · 物理学 2009-10-28 Junichiro Kishine

The nature of the effective spin Hamiltonian and magnetic order in the honeycomb iridates is explored by considering a trigonal crystal field effect and spin-orbit coupling. Starting from a Hubbard model, an effective spin Hamiltonian is…

强关联电子 · 物理学 2012-07-10 Subhro Bhattacharjee , Sung-Sik Lee , Yong Baek Kim