中文
相关论文

相关论文: Considering non-uniform current distributions in m…

200 篇论文

We study the nonlocal spin transport in a lateral spin valve with multiple ferromagnetic (FM) electrodes. When two current-injecting and two spin current-detecting electrodes are all ferromagnetic, the number of possible nonlocal spin…

材料科学 · 物理学 2015-05-13 Tae-Suk Kim , Hyun-Woo Lee , B. C. Lee

We use lateral spin valves with varying interface resistance to measure non-local Hanle effect in order to extract the spin-diffusion length of the non-magnetic channel. A general expression that describes spin injection and transport,…

介观与纳米尺度物理 · 物理学 2015-10-12 Estitxu Villamor , Luis E. Hueso , Fèlix Casanova

We analyze the statistical distribution of switching durations in spin-transfer switching induced by current steps, and discuss biasing strategies to enhance the reproducibility of switching durations. We use a macrospin approximation and…

强关联电子 · 物理学 2009-11-13 T. Devolder , C. Chappert , K. Ito

We present a study of the effects of inelastic scattering on the transport properties of various nanoscale devices, namely H$_2$ molecules sandwiched between Pt contacts, and a spin-valve made by an organic molecule attached to model…

介观与纳米尺度物理 · 物理学 2007-05-23 N. Jean , S. Sanvito

We theoretically investigate spin-dependent transport in a TMD-based vertical spin valve, taking WSe$_2$ as a representative example. Using effective Hamiltonians for the heterostructure and the Landauer formula, we derive the transmission…

介观与纳米尺度物理 · 物理学 2026-04-07 Yibo Wang , Yuchen Liu , Xinhe Wang , Wang Yang

We measure the giant magnetoresistance (GMR) with the current both parallel and perpendicular to the direction of the magnetization in the ferromagnetic (FM) layers and thus probe the anisotropy of the effective mean free paths for the…

凝聚态物理 · 物理学 2009-10-31 B. H. Miller , Branko P. Stojkovi'c , E. D. Dahlberg

The vortex states in a thin mesoscopic disk are investigated within the phenomenological Ginzburg-Landau theory in the presence of different ''model'' magnetic field profiles with zero average field which may result from a ferromagnetic…

超导电性 · 物理学 2009-11-07 M. V. Milosevic , S. V. Yampolskii , F. M. Peeters

A new current induced spin-torque transfer effect has been observed in a single ferromagnetic layer without resorting to multilayers. At a specific current density of one polarity injected from a point contact, abrupt resistance changes due…

凝聚态物理 · 物理学 2009-11-07 Y. Ji , C. L. Chien

We consider charge transport properties in realistic, fabricable, Ferromagnet/Superconductor spin valves having a layered structure $F_1/N/F_2/S$, where $F_1$ and $F_2$ denote the ferromagnets, $S$ the superconductor, and $N$ the normal…

超导电性 · 物理学 2017-02-15 Evan Moen , Oriol T. Valls

New mechanism of magnetoresistance, based on tunneling-emission of spin polarized electrons from ferromagnets (FM) into semiconductors (S) and precession of electron spin in the semiconductor layer under external magnetic field, is…

材料科学 · 物理学 2009-11-10 A. M. Bratkovsky , V. V. Osipov

A hybrid ferromagnet-superconductor spin valve is proposed. Its operation relies on the interplay between nonequilibrium transport and proximity-induced exchange coupling in superconductors. Huge tunnel magnetoresistance values as large as…

超导电性 · 物理学 2007-05-23 F. Giazotto , F. Taddei , Rosario Fazio , F. Beltram

We utilize a hybrid quantum-classical equation of motion approach to investigate the spin dynamics and spin-transfer torque in a spin valve under bias voltage. We show that the interplay between localized classical magnetic moments and…

介观与纳米尺度物理 · 物理学 2022-11-28 Rudolf Smorka , Pavel Baláž , Michael Thoss , Martin Žonda

We demonstrate using micromagnetic simulations and a theoretical model that a gradient in the saturation magnetization ($M_s$) of a perpendicularly magnetized ferromagnetic film induces a non-reciprocal spin wave propagation and,…

其他凝聚态物理 · 物理学 2021-04-14 Pablo Borys , Oleg Kolokoltsev , Naser Qureshi , Martin L. Plumer , Theodore L. Monchesky

Keldysh nonequilibrium Green's function method is utilized to study theoretically the spin polarized transport through a graphene spin valve irradiated by a monochromatic laser field. It is found that the bias dependence of the differential…

介观与纳米尺度物理 · 物理学 2015-06-05 Kai-He Ding , Zhen-Gang Zhu , Jamal Berakdar

We study charge transport in a two dimensional hybrid systems consisting of nonmagnetic two dimensional electron gas with spin-orbit interaction sandwiched between a Ferromagnetic lead and a normal metallic lead (FM/2DEG/NM). An {\it…

介观与纳米尺度物理 · 物理学 2007-05-23 T. P. Pareek

We investigate magnetotransport in a ferromagnetic/normal/ferromagnetic graphene junction where a gate electrode is attached to the normal segment. It is shown that the charge conductance can be maximal at an antiparallel configuration of…

介观与纳米尺度物理 · 物理学 2015-05-27 Takehito Yokoyama , Jacob Linder

We study the magnetic damping in the simplest of synthetic antiferromagnets, i.e. antiferromagnetically exchange-coupled spin valves in which applied magnetic fields tune the magnetic configuration to become noncollinear. We formulate the…

介观与纳米尺度物理 · 物理学 2015-08-07 Takahiro Chiba , Gerrit E. W. Bauer , Saburo Takahashi

We study the spin-dependent magneto conductance in mesoscopic rings subject to an inhomogeneous in-plane magnetic field. We show that the polarization direction of transmitted spin-polarized electrons can be controlled via an additional…

介观与纳米尺度物理 · 物理学 2009-11-07 Diego Frustaglia , Martina Hentschel , Klaus Richter

Nonreciprocity of spin wave propagation is a well-known consequence of antisymmetric exchange contributions possible in magnetic spin systems that lack inversion symmetry. In this case, it is possible for the energy of a state to depend on…

强关联电子 · 物理学 2019-09-06 Benjamin W. Zingsem , Michael Farle , Robert L. Stamps , Robert E. Camley

Spin-transfer torque in asymmetric spin valves can destabilize both parallel and antiparallel configurations and can lead to precessional modes also in the absence of an external magnetic field. We find a bistable precessional regime in…

介观与纳米尺度物理 · 物理学 2009-11-13 M. Gmitra , J. Barnas