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Spin Hall effects are a collection of phenomena, resulting from spin-orbit coupling, in which an electrical current flowing through a sample can lead to spin transport in a perpendicular direction and spin accumulation at lateral…

介观与纳米尺度物理 · 物理学 2007-09-18 Hans-Andreas Engel , Emmanuel I. Rashba , Bertrand I. Halperin

Spin currents resulting in the zero-bias spin separation have been observed in unbiased diluted magnetic semiconductor structures (Cd,Mn)Te/(Cd,Mg)Te. The pure spin current generated due to the electron gas heating by terahertz radiation is…

We present an extension to simple s-d models, aiming at simulating ultrafast magnetization dynamics and spin transport in metallic heterostructures. In particular, we consider an alternative spin dissipation channel due to a finite exchange…

材料科学 · 物理学 2023-06-14 Quentin Remy

We demonstrate that the hybrid structures consisting of a superconducting layer with an adjacent spin-textured ferromagnet demonstrate the variety of equilibrium magnetoelectric effects originating from coupling between the conduction…

超导电性 · 物理学 2019-06-18 D. S. Rabinovich , I. V. Bobkova , A. M. Bobkov , M. A. Silaev

There has been considerable debate on the onset of exotic spin phenomena in quantum wires due to enhanced many-body effects caused by the one-dimensional (1D) alignment of charge carriers. We explain various observed spin effects, such as a…

介观与纳米尺度物理 · 物理学 2015-02-17 Alfredo X. Sánchez , Jean-Pierre Leburton

The Hamiltonian describing 2D electron gas, in a spin-orbit active medium, can be cast into a consistent non-Abelian gauge field theory leading to a proper definition of the spin current. The generally advocated gauge symmetric version of…

超导电性 · 物理学 2012-09-25 Bertrand Berche , Ernesto Medina , Alexander López

Coulomb drag between two quantum wires is exponentially sensitive to the mismatch of their electronic densities. The application of a magnetic field can compensate this mismatch for electrons of opposite spin directions in different wires.…

介观与纳米尺度物理 · 物理学 2007-05-23 M. Pustilnik , E. G. Mishchenko , O. A. Starykh

We study coherent transport through a semiconductor nanowire in the presence of spin-orbit coupling and Zeeman splitting due to an applied magnetic field. By employing analytical and numerical techniques we develop a theory for the…

介观与纳米尺度物理 · 物理学 2012-10-26 Meng Cheng , Roman M. Lutchyn

By modeling a Rashba nanowire contacted to leads via an inhomogeneous spin-orbit coupling profile, we investigate the equilibrium properties of the spin sector when a uniform magnetic field is applied along the nanowire axis. We find that…

介观与纳米尺度物理 · 物理学 2018-08-02 Fabrizio Dolcini , Fausto Rossi

We analyze new spin effects in current-carrying state of superconductor-2D electron gas-superconductor (S-2DEG-S) device with spin-polarized nuclei in 2DEG region. The hyperfine interaction of 2D electrons with nuclear spins, described by…

超导电性 · 物理学 2014-02-11 E. V. Bezuglyi , A. S. Rozhavsky , I. D. Vagner , P. Wyder

Zeeman fields can drive semiconductor quantum wires with strong spin-orbit coupling and in proximity to s-wave superconductors into a topological phase which supports end Majorana fermions and offers an attractive platform for realizing…

介观与纳米尺度物理 · 物理学 2013-05-29 Piet W. Brouwer , Mathias Duckheim , Alessandro Romito , Felix von Oppen

We study the interplay of both Rashba and Dresselhaus spin-orbit couplings (SOCs) and a uniform perpendicular magnetic field $\textbf{B}$ on the transport of a spin-polarized electron along a curved quantum wire. Eigenenergies and…

介观与纳米尺度物理 · 物理学 2014-10-27 Carlos Baldo , Cristine Villagonzalo

The interference between spin-density-wave and superconducting instabilities in quasi-one-dimensional correlated metals is analyzed using the renormalization group method. At the one-loop level, we show how the interference leads to a…

强关联电子 · 物理学 2009-11-07 Raphael Duprat , C. Bourbonnais

We investigate electronic transport through II-VI semiconductor resonant tunneling structures containing diluted magnetic impurities. Due to the exchange interaction between the conduction electrons and the impurities, there arises a giant…

介观与纳米尺度物理 · 物理学 2009-11-13 David Sanchez , Charles Gould , Georg Schmidt , Laurens W. Molenkamp

It has been predicted recently that an electron beam can be polarized when it flows adiabatically through a quantum point contact in a system with spin-orbit interaction. Here, we show that a simple transverse electron focusing setup can be…

介观与纳米尺度物理 · 物理学 2007-05-23 A. Reynoso , Gonzalo Usaj , C. A. Balseiro

Persistent currents (PCs) in mesoscopic rings have been a subject of intense investigation since their proposal by B\"uttiker, Landauer, and Imry in 1983. In this paper, we explore the behavior of PC in spin-orbit coupled rings under the…

介观与纳米尺度物理 · 物理学 2024-11-20 Bijay Kumar Sahoo , Subroto Mukerjee , Abhiram Soori

The combined presence of a Rashba and a Zeeman effect in a ballistic one-dimensional conductor generates a spin pseudogap and the possibility to propagate a beam with well defined spin orientation. Without interactions transmission through…

介观与纳米尺度物理 · 物理学 2009-11-11 P. Devillard , A. Crepieux , K. I. Imura , T. Martin

The effect of a Zeeman magnetic field coupled to the spin of the electrons on the conducting properties of the disordered Hubbard model is studied. Using the Determinant Quantum Monte Carlo method, the temperature- and magnetic-field-…

强关联电子 · 物理学 2009-11-10 P. J. H. Denteneer , R. T. Scalettar

Electron edge states in graphene in the Quantum Hall effect regime can carry both charge and spin. We show that spin splitting of the zeroth Landau level gives rise to counterpropagating modes with opposite spin polarization. These chiral…

介观与纳米尺度物理 · 物理学 2008-04-12 D. A. Abanin , P. A. Lee , L. S. Levitov

We investigate the persistent currents, spin-polarized local density of states, and spectral functions of topological superconductors constructed by placing ferromagnetic impurities on top of an s-wave superconductor with Rashba spin-orbit…