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Non-equilibrium spin transport through an interacting quantum dot is analyzed. The coherent spin oscillations in the dot provide a generating source for spin current. In the interacting regime, the Kondo effect is influenced in a…

介观与纳米尺度物理 · 物理学 2007-05-23 Ping Zhang , Qi-Kun Xue , X. C. Xie

Although multilayer systems possess global inversion symmetry, some of the layers lack local inversion symmetry because no global inversion centers are present on such layers. Such locally non-centrosymmetric systems exhibit spatially…

超导电性 · 物理学 2015-03-19 Daisuke Maruyama , Manfred Sigrist , Youichi Yanase

Resonant behavior involving spin-orbit entangled states occurs for spin transport along a narrow channel defined in a two-dimensional electron gas, including an apparent rapid relaxation of the spin polarization for special values of the…

介观与纳米尺度物理 · 物理学 2014-04-02 D. H. Berman , M. Khodas , M. E. Flatté

We discuss the transport properties of a quantum spin-Hall insulator with sizable Rashba spin-orbit coupling in a disk geometry. The presence of topologically protected helical edge states allows for the control and manipulation of spin…

介观与纳米尺度物理 · 物理学 2018-08-28 R. Battilomo , N. Scopigno , C. Ortix

We discuss the effect of the spin-orbit interaction on the band structure, wave functions and low temperature conductance of long quasi-one-dimensional electron systems patterned in two-dimensional electron gases (2DEG). Our model for these…

介观与纳米尺度物理 · 物理学 2009-10-31 A. V. Moroz , C. H. W. Barnes

A theory of the circular photogalvanic effect caused by spin splitting in quantum wells is developed. Direct interband transitions between the hole and electron size-quantized subbands are considered. The photocurrent excitation spectrum is…

介观与纳米尺度物理 · 物理学 2015-06-24 L. E. Golub

We predict that a single-level quantum dot without discernible splitting of its spin states develops a spin-precession resonance in charge transport when embedded into a spin valve. The resonance occurs in the generic situation of Coulomb…

介观与纳米尺度物理 · 物理学 2016-04-05 M. Hell , B. Sothmann , M. Leijnse , M. R. Wegewijs , J. König

Electronic transport in a one-dimensional mesoscopic ring threaded by a magnetic flux is studied in presence of Rashba and Dresselhaus spin-orbit interactions. A completely analytical technique within a tight-binding formalism unveils the…

介观与纳米尺度物理 · 物理学 2011-08-30 Santanu K. Maiti , Moumita Dey , Shreekantha Sil , Arunava Chakrabarti , S. N. Karmakar

By using the momentum-space Lanczos recursive method which considers rigorously all multiple-scattering events, we unveil that the non-perturbative disorder effect has dramatic impact on the charge transport of a two-dimensional electron…

介观与纳米尺度物理 · 物理学 2020-02-05 Weiwei Chen , Cong Xiao , Qinwei Shi , Qunxiang Li

A spin-qubit transformation protocol is proposed for an electron in a mesoscopic quantum ring with tunable Rashba interaction controlled by the external electric field. The dynamics of an electron driven around the ring by a series of…

介观与纳米尺度物理 · 物理学 2020-09-22 Kregar Ambrož , Ramšak Anton

The conventional unpolarized current injected into a {\em quantum-coherent} semiconductor ring attached to two external leads can be modulated from perfect conductor to perfect insulator limit via Rashba spin-orbit (SO) coupling. This…

介观与纳米尺度物理 · 物理学 2007-05-23 Satofumi Souma , Branislav K. Nikolic

We study ballistic transport of spin-polarized electrons through quantum wires in which the strength of the Rashba spin-orbit interaction (SOI) is spatially modulated. Subband mixing, due to SOI, between the two lowest subbands is taken…

介观与纳米尺度物理 · 物理学 2009-11-10 X. F. Wang

We discuss the calculation of evanescent states in quasi-one-dimensional quantum wires in the presence of Rashba spin-orbit interaction. We suggest a computational algorithm devised for cases in which longitudinal and transverse motions are…

介观与纳米尺度物理 · 物理学 2009-11-13 Llorens Serra , David Sanchez , Rosa Lopez

We present magnetotransport calculations for homogeneous two-dimensional electron systems including the Rashba spin-orbit interaction, which mixes the spin-eigenstates and leads to a modified fan-chart with crossing Landau levels. The…

介观与纳米尺度物理 · 物理学 2016-08-16 M. Langenbuch , M. Suhrke , U. Rössler

We consider a two-dimensional system of harmonically trapped particles with pseudo-spin-$\frac{1}{2}$ degree of freedom. This degree of freedom is coupled to the particle's momentum via the so-called Rashba spin-orbit interaction. We…

We study the local equilibrium properties of two-dimensional electron gases at high magnetic fields in the presence of random smooth electrostatic disorder, Rashba spin-orbit coupling, and the Zeeman interaction. Using a systematic magnetic…

介观与纳米尺度物理 · 物理学 2014-04-29 Daniel Hernangomez-Perez , Serge Florens , Thierry Champel

We provide a simple explanation, based on an effective field, for the precession damping rate due to the spin-orbit interaction. Previous effective field treatments of spin-orbit damping include only variations of the state energies with…

材料科学 · 物理学 2009-11-13 Keith Gilmore , Yves U. Idzerda , Mark D. Stiles

In commensurate twisted homobilayers, purely radial Rashba spin-orbit fields can emerge. We employ first-principles calculations to investigate the band structures and the spin-orbit fields close to the high-symmetry points $K$ and $\Gamma$…

介观与纳米尺度物理 · 物理学 2026-01-30 Thomas Naimer , Paulo E. Faria Junior , Klaus Zollner , Jaroslav Fabian

Spin-orbit splitting of surface states is analyzed within and beyond the Rashba model using as examples the (111) surfaces of noble metals, Ag2Bi surface alloy, and topological insulator Bi2Se3. The ab initio analysis of relativistic…

材料科学 · 物理学 2015-06-17 E. E. Krasovskii

In a ferromagnetic heterostructure, the interplay between a Rashba spin-orbit coupling and an exchange field gives rise to a current-driven spin torque. In a realistic device setup, we investigate the Rashba spin torque in the diffusive…

介观与纳米尺度物理 · 物理学 2015-06-15 Christian Ortiz Pauyac , Xuhui Wang , Mairbek Chshiev , Aurelien Manchon