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相关论文: Tailoring spin-orbit torque in diluted magnetic se…

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We investigate spin-charge conversion phenomena in hybrid structures of topological insulator (TI) thin films and magnetic insulators. We find an anisotropic inverse spin-galvanic effect (ISGE) that yields a highly tunable spin-orbit torque…

介观与纳米尺度物理 · 物理学 2020-11-11 Ali G. Moghaddam , Alireza Qaiumzadeh , Anna Dyrdał , Jamal Berakdar

Using an exact diagonalization approach we show that one- and two-electron InAs quantum dots exhibit avoided crossing in the energy spectra that are induced by the spin-orbit coupling in the presence of an in-plane external magnetic field.…

介观与纳米尺度物理 · 物理学 2011-07-01 M. P. Nowak , B. Szafran , F. M. Peeters , B. Partoens , W. Pasek

We report the observation of tunneling anisotropic magnetoresistance effect (TAMR) in the epitaxial metal-semiconductor system Fe/GaAs/Au. The observed two-fold anisotropy of the resistance can be switched by reversing the bias voltage,…

介观与纳米尺度物理 · 物理学 2009-11-11 J. Moser , A. Matos-Abiague , D. Schuh , W. Wegscheider , J. Fabian , D. Weiss

We study the dc conductivity of iron-based superconductors within the orbital-selective spin fluctuation scenario. Within this approach, the anisotropy of spin fluctuations below the spin-nematic transition at T$_S$ is also responsible for…

超导电性 · 物理学 2019-04-10 Raquel Fernandez-Martin , Laura Fanfarillo , Lara Benfatto , Belen Valenzuela

The spin texture of the metallic two-dimensional electron system (root3 x root3)-Au/Ge(111) is revealed by fully three-dimensional spin-resolved photoemission, as well as by density functional calculations. The large hexagonal Fermi…

We study a two-dimensional single band Hubbard Hamiltonian with antisymmetric spin-orbit coupling. We argue that this is the minimal model to understand the electronic properties of locally non-centrosymmetric transition-metal (TM) oxides…

强关联电子 · 物理学 2021-04-30 Mehdi Biderang , Alireza Akbari , Jesko Sirker

We use numerical simulations to investigate the spin Hall effect in quantum wires in the presence of both Rashba and Dresselhaus spin-orbit coupling. We find that the intrinsic spin Hall effect is highly anisotropic with respect to the…

介观与纳米尺度物理 · 物理学 2014-03-18 A. W. Cummings , R. Akis , D. K. Ferry

Ballistic spin polarized transport through diluted magnetic semiconductor (DMS) single and double barrier structures is investigated theoretically using a two-component model. The tunneling magnetoresistance (TMR) of the system exhibits…

凝聚态物理 · 物理学 2009-11-07 Kai Chang , J. B. Xia , F. M. Peeters

Peculiarities observed in the field dependencies of the magnetic torque in k-(BETS)2Mn[N(CN)2]3 measured at T=1.5K, H=0-150kOe, have been explained from the viewpoint of the two interacting spin subsystems, one associated with d-electron…

强关联电子 · 物理学 2016-02-18 O. M. Vyaselev , S. V. Simonov , N. D. Kushch , M. V. Kartsovnik , W. Biberacher

Magnetization dynamics in single-domain ferromagnets can be triggered by charge current if spin-orbit coupling is sufficiently strong. We apply functional Keldysh theory to investigate Rashba spin-orbit torques in metallic two-dimensional…

材料科学 · 物理学 2015-07-14 A. Qaiumzadeh , R. A. Duine , M. Titov

We present calculations of the frequency-dependent spin susceptibility tensor of a two-dimensional electron gas with competing Rashba and Dresselhaus spin-orbit interaction. It is shown that the interplay between both types of spin-orbit…

介观与纳米尺度物理 · 物理学 2015-05-13 Catalina López-Bastidas , Jesús A. Maytorena , Francisco Mireles

We consider a synthetic antiferromagnetic spin-torque oscillator with anisotropic interlayer exchange coupling. This system exhibits exceptional points in its linearized dynamics. We find the non-linear dynamics and the dynamical phase…

介观与纳米尺度物理 · 物理学 2023-02-16 R. A. Duine , V. Errani , J. S. Harms

We investigate quantum coherence of electron spin transported through a semiconductor spintronic device, where spins are envisaged to be controlled by electrical means via spin-orbit interactions. To quantify the degree of spin coherence,…

介观与纳米尺度物理 · 物理学 2017-08-23 Branislav K. Nikolic , Satofumi Souma

We study the dynamics of an electron confined in a one-dimensional double quantum dot in the presence of driving external magnetic fields. The orbital motion of the electron is coupled to the spin dynamics by spin orbit interaction of the…

混沌动力学 · 物理学 2015-05-30 L. Chotorlishvili , E. Ya. Sherman , Z. Toklikishvili , A. Komnik , J. Berakdar

The ability to switch magnetic elements by spin-orbit-induced torques has recently attracted much attention for a path towards high-performance, non-volatile memories with low power consumption. Realizing efficient spin-orbit-based…

Spin-transfer and spin-orbit torques allow controlling magnetic degrees of freedom in various materials and devices. However, while the transfer of angular momenta between electrons has been widely studied, the contribution of nuclear spins…

介观与纳米尺度物理 · 物理学 2023-10-16 Adam B. Cahaya , Alejandro O. Leon , Mohammad H. Fauzi

The influence of dynamic interlayer interactions on the spin torque driven and damped excitations are illustrated for a three layer macrospin model system that corresponds to a standard spin-torque oscillator. The free layer and a synthetic…

介观与纳米尺度物理 · 物理学 2017-04-05 M. Romera , E. Monteblanco , F. Garcia-Sanchez , B. Delaet , L. D. Buda-Prejbeanu , U. Ebels

We demonstrate a high-quality spin orbit torque nano-oscillator comprised of spin wave modes confined by the magnetic field by the strongly inhomogeneous dipole field of a nearby micromagnet. This approach enables variable spatial…

介观与纳米尺度物理 · 物理学 2021-12-28 Chi Zhang , Inhee Lee , Yong Pu , Sergei A. Manuilov , Denis V. Pelekhov , P. Chris Hammel

We propose a new approach to derive spin torque in systems of broken inversion symmetry. It uses the concepts of asymmetric and directional spin-spin interactions to obtain their effective fields. We applied the effective fields into the…

强关联电子 · 物理学 2019-09-30 H. Y. Kwon , S. P. Kang , N. J. Kim , C. K. Lee , C. Won

We use neutron scattering to study the spin excitations associated with the stripe antiferromagnetic (AFM) order in semiconducting K$_{0.85}$Fe$_{1.54}$Se$_2$ ($T_N$=$280$ K). We show that the spin wave spectra can be accurately described…

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