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We analyze the effects of spin-orbit coupling on fluctuations of the conductance of a quantum dot fabricated in a GaAs heterostructure. We argue that spin-orbit effects may become important in the presence of a large parallel magnetic field…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 B. I. Halperin , Ady Stern , Y. Oreg , J. H. Cremers , J. Folk , C. M. Marcus

Spin-dependent tunneling through an indirect bandgap barrier like the GaAs/AlAs/GaAs heterostructure along [001] direction is studied by the tight-binding method. The tunneling is characterized by the proportionality of the Dresselhaus…

Materials Science · Physics 2009-07-01 Titus Sandu , Athanasios Chantis , Radu Iftimie

Spin injection is a powerful experimental probe into a wealth of nonequilibrium spin-dependent phenomena displayed by materials with spin-orbit coupling (SOC). Here, we develop a theory of coupled spin-charge diffusive transport in…

Mesoscale and Nanoscale Physics · Physics 2019-12-25 Yu-Hsuan Lin , Chunli Huang , Manuel Offidani , Aires Ferreira , Miguel A. Cazalilla

We use a perturbative approach to study the effects of interfacial spin-orbit coupling in magnetic multilayers by treating the two-dimensional Rashba model in a fully three-dimensional description of electron transport near an interface.…

Mesoscale and Nanoscale Physics · Physics 2017-10-04 Kyoung-Whan Kim , Kyung-Jin Lee , Jairo Sinova , Hyun-Woo Lee , M. D. Stiles

A large spin-dependent and electric field-tunable magnetoresistance of a two-dimensional electron system (2DES) is a key ingredient for the realization of many novel concepts for spin-based electronic devices. The low magnetoresistance…

Relativistic effects influence the motion of charged particles in solids by intertwining spin and momentum. The resulting phenomena exhibit rich and intriguing properties that can unveil radically new quantum devices. In this context, the…

The spin of a single electron in an electrically defined quantum dot in a 2DEG can be manipulated by moving the quantum dot adiabatically in a closed loop in the 2D plane under the influence of applied gate potentials. In this paper we…

Mesoscale and Nanoscale Physics · Physics 2011-10-26 Sanjay Prabhakar , James Raynolds , Akira Inomata , Roderick Melnik

We present a semi-automated computer-assisted method to generate and calculate diagrams in the disorder averaging approach to disordered 2D conductors with intrinsic spin-orbit interaction (SOI). As an application, we calculate the effect…

Mesoscale and Nanoscale Physics · Physics 2009-08-18 Oleg Chalaev , Daniel Loss

We show that Rashba spin-orbit coupling may result in an energy gap in the spectrum of electrons in a two-mode quantum wire if a suitable confining potential is chosen. This leads to a dip in the conductance and a spike in the spin current…

Mesoscale and Nanoscale Physics · Physics 2014-02-03 K. E. Nagaev , A. S. Goremykina

An influence of spin-orbit interaction on the tunneling between two 2D electron layers is considered. Particular attention is addressed to the relation between the contribution of Rashba and Dresselhaus types. It is shown that without…

Other Condensed Matter · Physics 2009-11-13 I. V. Rozhansky , N. S. Averkiev

Spin relaxation was studied in a two-dimensional electron gas confined in a wide GaAs quantum well. Recently, the control of the spin relaxation anisotropy by diffusive motion was first shown in D. Iizasa et al., arXiv:2006.08253 (2020).…

Mesoscale and Nanoscale Physics · Physics 2020-09-17 F. G. G. Hernandez , G. J. Ferreira , M. Luengo-Kovac , V. Sih , N. M. Kawahala , G. M. Gusev , A. K. Bakarov

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…

Mesoscale and Nanoscale Physics · Physics 2011-08-30 Santanu K. Maiti , Moumita Dey , Shreekantha Sil , Arunava Chakrabarti , S. N. Karmakar

Spin-orbit coupling (SOC) is at the heart of many exotic band-structures and can give rise to many-body states with topological order. Here we present a general scheme based on a combination of microwave driving and lattice shaking for the…

Quantum Gases · Physics 2017-06-28 Fabian Grusdt , Tracy Li , Immanuel Bloch , Eugene Demler

A device enabling mechanically-controlled spin and electric transport in mesoscopic structures is proposed. It is based on the transfer of electrons through weak links formed by suspended nanowires, on which the charge carriers experience a…

Mesoscale and Nanoscale Physics · Physics 2014-07-09 R. I. Shekhter , O. Entin-Wohlman , A. Aharony

The linear magnetoelectric effect (ME) is the phenomenon by which an electric field produces a magnetization. Its observation requires both time-reversal and space-inversion symmetries to be broken, as in multiferroics. While the ME effect…

Spin-charge interconversion is currently the focus of intensive experimental and theoretical research both for its intrinsic interest and for its potential exploitation in the realization of new spintronic functionalities. Spin-orbit…

Mesoscale and Nanoscale Physics · Physics 2017-04-04 Amin Maleki , Roberto Raimondi

The intrinsic spin-Hall effect on spin accumulation and electric conductance in a diffusive regime of a 2D electron gas has been studied for a 2D strip of a finite width. It is shown that the spin polarization near the flanks of the strip,…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 A. G. Mal'shukov , L. Y. Wang , C. S. Chu , K. A. Chao

We describe a numerical approach to modeling magnetoelectric effects generated by spin-orbit coupling in inhomogeneous diffusive 2D superconductors. It is based on direct minimization of the free energy of diffusion modes, including their…

Superconductivity · Physics 2025-02-12 P. Virtanen

We report on the coherent control and transport of indirect exciton (IX) spins in GaAs double quantum well (DQW) nanostructures. The spin dynamics was investigated by optically generating spins using a focused, circularly polarized light…

Mesoscale and Nanoscale Physics · Physics 2015-03-11 Adriano Violante , Rudolf Hey , Paulo Ventura Santos

We obtain analytic formulas for the frequency-dependent spin-Hall conductivity of a two-dimensional electron gas (2DEG) in the presence of impurities, linear spin-orbit Rashba interaction, and external magnetic field perpendicular to the…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 E. M. Hankiewicz , G. Vignale
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