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Electrical manipulation of magnetization is essential for integration of magnetic functionalities such as magnetic memories and magnetic logic devices into electronic circuits. The current induced spin-orbit torque (SOT) in heavy…

The spin flip of the conduction electrons at the interface of a ferromagnetic and a nonmagnetic part of a metallic wire, suspended between two electrodes, is shown to tort the wire when a current is driven through it. In order to enhance…

强关联电子 · 物理学 2016-10-26 Peter Fulde , Stefan Kettemann

We study the magnetization dynamics of a molecular magnet driven by static and variable magnetic fields within a semiclassical treatment. The underling analyzes is valid in a regime, when the energy is definitely lower than the anisotropy…

混沌动力学 · 物理学 2009-07-24 L. Chotorlishvili , P. Schwab , J. Berakdar

Spin-orbit coupling introduces chirality into electronic structure. This can have profound effects on the magnetization induced by orbital motion of electrons. Here we derive a formula for the orbital magnetization of interacting electrons…

强关联电子 · 物理学 2014-09-23 R. Nourafkan , G. Kotliar , A. -M. S. Tremblay

We experimentally investigate electron transport through the interface between a permalloy ferromagnet and the edge of a two-dimensional electron system with strong Rashba-type spin-orbit coupling. We observe strongly non-linear transport…

介观与纳米尺度物理 · 物理学 2014-03-04 A. Kononov , S. V. Egorov , G. Biasiol , L. Sorba , E. V. Deviatov

We explore the impact of a Rashba-type spin-orbit interaction in the conduction band on the spin dynamics of hot excitons in diluted magnetic semiconductor quantum wells. In materials with strong spin-orbit coupling, we identify parameter…

介观与纳米尺度物理 · 物理学 2019-07-30 Florian Ungar , Pablo Ignacio Tamborenea , Vollrath Martin Axt

We demonstrate how the Rashba spin-orbit coupling in semiconductor heterostructures can produce and control a spin-polarized current without ferromagnetic leads. Key idea is to use spin-double refraction of an electronic beam with a nonzero…

介观与纳米尺度物理 · 物理学 2007-05-23 V. Marigliano Ramaglia , D. Bercioux , V. Cataudella , G. De Filippis , C. A. Perroni

Magnetic switching of a single molecular magnet (SMM) due to spin-polarized current flowing between ferromagnetic metallic electrodes is investigated theoretically. Magnetic moments of the electrodes are assumed to be collinear and parallel…

介观与纳米尺度物理 · 物理学 2016-08-16 Maciej Misiorny , Józef Barnas

We report an unconventional behavior of electron transport in the limit of zero magnetic flux in a one-dimensional disordered ring, be it completely random or any correlated one, subjected to Rashba spin-orbit (SO) coupling. It exhibits…

介观与纳米尺度物理 · 物理学 2016-12-20 Moumita Patra , Santanu K. Maiti

We present a theoretical study of magnetic field driven spin transitions of electrons in coupled lateral quantum dot molecules. A detailed numerical study of spin phases of artificial molecules composed of two laterally coupled quantum dots…

介观与纳米尺度物理 · 物理学 2015-06-25 Ramin M. Abolfath , Pawel Hawrylak

We utilize simulations of electron scattering by a chain of dynamical quantum spins, to analyze the interplay between the spin transfer effect and the magnetization dynamics. We show that the complex interactions between the spin-polarized…

材料科学 · 物理学 2021-04-21 Neil Tramsen , Alexander Mitrofanov , Sergei Urazhdin

Persistent, oscillatory charge and spin currents are shown to be driven by a two-component terahertz laser pulse in a one-dimensional mesoscopic ring with Rashba-Dresselhaus spin orbit interactions (SOI) linear in the electron momentum. The…

介观与纳米尺度物理 · 物理学 2015-06-03 Marian Nita , Bogdan Ostahie , D. C. Marinescu , Andrei Manolescu , Vidar Gudmundsson

A (II,Mn)VI diluted magnetic semiconductor quantum dot with an integer number of electrons controlled with a gate voltage is considered. We show that a single conduction band electron is able to induce a spontaneous collective magnetization…

介观与纳米尺度物理 · 物理学 2009-11-10 J. Fernández-Rossier , L. Brey

The magnetization switching dynamics of biaxial single-domain homogeneous ferromagnetic particles, in which the two easy axes are perpendicular to each other, is simulated using a 4-state clock model. A zero-field mapping of the statics…

材料科学 · 物理学 2007-05-23 Xuekun Kou , M. A. Novotny , Per Arne Rikvold

We theoretically analyze a possibility of electromagnetic wave emission due to electron transitions between spin subbands in a ferromagnet. Different mechanisms of such spin-flip transitions are cousidered. One mechanism is the electron…

介观与纳米尺度物理 · 物理学 2025-04-01 Evgeny Karashtin

We present a theory of magnetotransport through an electronic orbital, where the electron spin interacts with a (sufficiently) large external spin via an exchange interaction. Using a semiclassical approximation, we derive a set of…

介观与纳米尺度物理 · 物理学 2014-10-22 Klemens Mosshammer , Tobias Brandes

We suggest a new spin orientation mechanism for localized electrons: $dynamic~electron~spin~polarization~provided~by~nuclear~spin~fluctuations$. The angular momentum for the electrons is gained from the nuclear spin system via the hyperfine…

介观与纳米尺度物理 · 物理学 2020-10-14 D. S. Smirnov , T. S. Shamirzaev , D. R. Yakovlev , M. Bayer

The magnetization of anisotropic quantum dots in the presence of the Rashba spin-orbit interaction has been studied for three interacting electrons in the dot. We observe unique behaviors of magnetization that are direct reflections of the…

介观与纳米尺度物理 · 物理学 2015-01-07 Siranush Avetisyan , Tapash Chakraborty , Pekka Pietilainen

The Schr\"{o}dinger equation for an electron in a mesoscopic ring, in the presence of the Rashba and linear Dresselhaus terms of the spin-orbit interaction (SOI) and of a magnetic field $B$, is solved exactly. The effective electric fields…

介观与纳米尺度物理 · 物理学 2007-05-23 X. F. Wang , P. Vasilopoulos

The z axis magnetization of a two dimensional electron gas with contact repulsive interaction and in presence of a Rashba potential is computed by means of quantum field theory at second order. A striking effect of the pure Rashba…

介观与纳米尺度物理 · 物理学 2011-12-21 Alberto Ambrosetti , Pier Luigi Silvestrelli , Flavio Toigo