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Space- and time-resolved measurements of spin drift and diffusion are performed on a GaAs-hosted two-dimensional electron gas. For spins where forward drift is compensated by backward diffusion, we find a precession frequency in absence of…

Mesoscale and Nanoscale Physics · Physics 2016-05-11 P. Altmann , F. G. G. Hernandez , G. J. Ferreira , M. Kohda , C. Reichl , W. Wegscheider , G. Salis

Spin-dependent transport is investigated in ballistic regime through the interface between a ferromagnet and a spin spiral. We show that spin-dependent interferences lead to a new type of diffraction called "spin-diffraction". It is shown…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Aurélien Manchon , Natalya Ryzhanova , A. Vedyayev , Bernard Dieny

We investigate the coupling of the spin angular momentum of light beams with elliptical polarization to the spin degree of freedom of free electrons. It is shown that this coupling, which is of similar origin as the well-known spin-orbit…

Quantum Physics · Physics 2014-11-04 Heiko Bauke , Sven Ahrens , Rainer Grobe

Spin-dependent tunneling through a symmetric semiconductor barrier is studied including the k^3 Dresselhaus effect. The spin-dependent transmission of electron can be obtained analytically. By comparing with previous work(Phys. Rev. B 67.…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 L. G. Wang , Wen Yang , Kai Chang

We theoretically investigate the deflection-induced coupling of an electron spin to vibrational motion due to spin-orbit coupling in suspended carbon nanotube quantum dots. Our estimates indicate that, with current capabilities, a quantum…

Mesoscale and Nanoscale Physics · Physics 2012-06-05 András Pályi , P. R. Struck , Mark Rudner , Karsten Flensberg , Guido Burkard

We investigate spin-dependent electron transfer in the presence of a Duschinskii rotation. In particular, we propagate dynamics for a two-level model system for which spin-orbit coupling introduces an interstate coupling of the form…

Quantum Physics · Physics 2023-01-11 Suraj S. Chandran , Yanze Wu , Joseph E. Subotnik

Spin transport was studied in a two-dimensional electron gas hosted in a wide GaAs quantum well occupying two subbands. Using space and time Kerr rotation microscopy to image drifting spin packets under an in-plane accelerating electric…

Mesoscale and Nanoscale Physics · Physics 2020-07-01 N. M . Kawahala , F. C. D. Moraes , G. M. Gusev , A. K. Bakarov , F. G. G. Hernandez

Spin-dependent transport through an interacting single-level quantum dot coupled to ferromagnetic leads with non-collinear magnetizations is analyzed theoretically. The transport properties and average spin of the dot are investigated…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 W. Rudzinski , J. Barnas , R. Swirkowicz , M. Wilczynski

We study the edge-channel transport of electrons in a high-mobility Si/SiGe two-dimensional electron system in the quantum Hall regime. By selectively populating the spin-resolved edge channels, we observe suppression of the scattering…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 K. Hamaya , S. Masubuchi , K. Hirakawa , S. Ishida , Y. Arakawa , K. Sawano , Y. Shiraki , T. Machida

We describe an approach to electrically control the strong interaction between a single electron spin and the vibrational motion of a suspended carbon nanotube resonator. The strength of the deflection-induced spin-phonon coupling is…

Quantum Physics · Physics 2015-10-20 Fang-Yu Hong , Jing-Li Fu , Yan Wu , Zhi-Yan Zhu

The coupled nonlinear coordinate and spin dynamics of an electron in a double quantum dot with spin-orbit interaction is studied semiclassically. The system is driven by an electric field with the frequency matching the orbital or the…

Mesoscale and Nanoscale Physics · Physics 2009-06-29 D. V. Khomitsky , E. Ya. Sherman

It has been shown that tunneling of spin-polarized electrons through a semiconductor barrier is accompanied by generation of an electric current in the plane of the interfaces. The direction of this interface current is determined by the…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 S. A. Tarasenko , V. I. Perel' , I. N. Yassievich

We investigate the effects of spin-momentum locking on the interference and diffraction patterns due to a double- or single-slit in an electronic \emph{Gedankenexperiment}. We show that the inclusion of the spin-degree-of-freedom, when…

Mesoscale and Nanoscale Physics · Physics 2020-10-15 D. Bercioux , T. van den Berg , D. Ferraro , J. Rech , T. Jonckheere , T. Martin

Spin-orbit interaction (SOI) leads to spin precession about a momentum-dependent spin-orbit field. In a diffusive two-dimensional (2D) electron gas, the spin orientation at a given spatial position depends on which trajectory the electron…

Mesoscale and Nanoscale Physics · Physics 2016-02-18 P. Altmann , M. Kohda , C. Reichl , W. Wegscheider , G. Salis

In this paper, the control of the edge-mode spectrum of integer-Hall-effect 2D waveguides by electric field is proposed and modeled with the effective mass approach. Under certain found conditions, the applied transversal electric field…

Mesoscale and Nanoscale Physics · Physics 2019-03-04 Guennadi A. Kouzaev

We perform time-dependent simulations of spin exchange for an electron pair in laterally coupled quantum dots. The calculation is based on configuration interaction scheme accounting for spin-orbit (SO) coupling and electron-electron…

Mesoscale and Nanoscale Physics · Physics 2010-10-14 M. P. Nowak , B. Szafran

We consider theoretically transport in a spinfull one-channel interacting quantum wire placed in an external magnetic field. For the case of two point-like impurities embedded in the wire, under a small voltage bias the spin-polarized…

Strongly Correlated Electrons · Physics 2010-02-17 Zoran Ristivojevic , George I. Japaridze , Thomas Nattermann

We describe theoretically the process of multi-beam reflection in a two-dimensional electron system with a lateral potential barrier. Due to spin-orbital interaction, the reflection process leads to the formation of three beams with…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 A. O. Govorov , A. V. Kalameitsev , J. P. Dulka

We investigate spin-dependent thermoelectric transport through a system of two coupled quantum dots attached to reservoirs of spin-polarized electrons. Generally, we focus on the strongly correlated regime of transport. To this end, a…

Mesoscale and Nanoscale Physics · Physics 2017-02-20 Łukasz Karwacki , Piotr Trocha

We theoretically show how the spin orientation of a single magnetic adatom can be controlled by spin polarized electrons in a scanning tunneling microscope configuration. The underlying physical mechanism is spin assisted inelastic…

Mesoscale and Nanoscale Physics · Physics 2010-03-11 F. Delgado , J. J. Palacios , J. Fernandez-Rossier