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We report on the non-linear in-plane electrical transport in coherently grown [La0.7Sr0.3MnO3/SrTiO3] multilayers with ultrathin (< 3 nm) single layers. Current-induced switching of the conductance, with low conductance at larger currents,…

强关联电子 · 物理学 2009-09-25 K. Doerr , K. -H. Mueller , T. Walter , M. Sahana , D. Eckert , K. Nenkov , L. Schultz , K. Brand , M. Lehmann

We present a formalism that simultaneously incorporates the effect of quantum tunneling and spin diffusion on spin Hall magnetoresistance observed in normal metal/ferromagnetic insulator bilayers (such as Pt/YIG) and normal…

介观与纳米尺度物理 · 物理学 2016-12-30 Seulgi Ok , Wei Chen , Manfred Sigrist , Dirk Manske

We propose the two-band s-d model to describe theoretically a diffuse regime of the spin-dependent electron transport in magnetic tunnel junctions (MTJ's) of the form F/O/F where F's are 3d transition metal ferromagnetic layers and O is the…

材料科学 · 物理学 2009-11-07 D. Bagrets , A. Bagrets , A. Vedyayev , B. Dieny

Spin-transfer torque and current induced spin dynamics in spin-valve nanopillars with the free magnetic layer located between two magnetic films of fixed magnetic moments is considered theoretically. The spin-transfer torque in the limit of…

介观与纳米尺度物理 · 物理学 2010-04-12 Pavel Balaz , Martin Gmitra , Jozef Barnas

In this communication we study the behaviour of spin current components in a ballistic junction consisting of two semi-infinite leads and a scattering region composed of two magnetic layers separated by a non-magnetic metallic spacer. We…

介观与纳米尺度物理 · 物理学 2024-07-02 Valentin Fadeev , Andrey Umerski

We investigate the magnetization dynamics through the magnetoimpedance effect in ferromagnetic NiFe/Cu/Co films. We observe that the magnetoimpedance response is dependent on the thickness of the non-magnetic Cu spacer material, a fact…

材料科学 · 物理学 2015-06-22 E. F. Silva , M. Gamino , A. M. H. de Andrade , M. A. Corrêa , M. Vázquez , F. Bohn

When charge current passes through a normal metal that exhibits spin Hall effect, spin accumulates at the edge of the sample in the transverse direction. We predict that this spin accumulation, or spin voltage, enables quantum tunneling of…

介观与纳米尺度物理 · 物理学 2016-09-21 Wei Chen , Manfred Sigrist , Dirk Manske

We consider quasi-two-dimensional gas of electrons in a typical Si-MOSFET, assuming repulsive contact interaction between electrons. Magnetisation and susceptibility are evaluated within the mean-field approach. Finite thickness of the…

介观与纳米尺度物理 · 物理学 2017-06-28 D. I. Golosov

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

Spin-transfer is a typical spintronics effect that allows a ferromagnetic layer to be switched by spin-injection. Most of the experimental results about spin transfer are described on the basis of the Landau-Lifshitz-Gilbert equation of the…

材料科学 · 物理学 2015-06-25 J. -E. Wegrowe , C. Ciornei , H. -J. Drouhin

We develop a semiclassical Boltzmann-Langevin theory of the spin polarized shot noise in a diffusive normal metal spin-valve connected by tunnel contacts to ferromagnetic reservoirs with noncollinear magnetizations. We obtain basic…

介观与纳米尺度物理 · 物理学 2009-11-11 B. Abdollahipour , M. Zareyan

We perform first-principles calculations for the three multilayer systems (100)-Co_1/Cu_n, -NiCo_2Ni/Cu_n and -Co_4/Cu_n, and find from a comparison x of the results for system 2 and 3 that amplitude and phase of the exchange coupling are…

凝聚态物理 · 物理学 2009-10-28 S. Krompiewski , F. Süss , U. Krey

We study spin and entanglement dynamics in spin-1/2 XXZ chains under periodic monitoring and show that this system exhibits two measurement-induced phase transitions: a steady-state entanglement phase transition similar to those in…

量子物理 · 物理学 2026-05-27 K. G. S. H. Gunawardana , Ali G. Moghaddam , Teemu Ojanen

In an antiferromagnet (AF) with uniaxial anisotropy, spin-up and spin-down magnons coexist and form an intrinsic degree of freedom resembling electrons. When polarized by an adjacent ferromagnet (F), a magnonic pure spin current can be…

介观与纳米尺度物理 · 物理学 2018-07-25 Ran Cheng , Di Xiao , Jian-Gang Zhu

The current dependence of the switching barrier for spin torque switching of an in-plane magnetized ferromagnet was studied. Two scaling currents, I_{c}$ and I_{c}^{*}(>I_{c}), were introduced to distinguish the magnetization stability. In…

介观与纳米尺度物理 · 物理学 2013-09-30 Tomohiro Taniguchi , Hiroshi Imamura

From both theory and experiment, scattering of minority electrons is expected to be weaker than scattering of majority electrons in both dilute Fe(Cr) alloys and at Fe(Cr)/Cr interfaces. We show that Fe(Cr)/Cr/Fe(Cr) trilayer nanopillars…

材料科学 · 物理学 2009-11-10 M. AlHajDarwish , A. Fert , W. P. Pratt , J. Bass

We consider analytically current-driven dynamics of magnetic N\'{e}el walls in heavy metal/ferromagnetic metal/oxide trilayers where strong spin-orbit coupling and interfacial Dzyaloshinskii-Moriya interaction (i-DMI) coexist. We show that…

介观与纳米尺度物理 · 物理学 2019-05-09 Mei Li , Jianbo Wang , Jie Lu

We theoretically study a finite size $SF_1NF_2$ spin valve, where a normal metal ($N$) insert separates a thin standard ferromagnet ($F_1$) and a thick half-metallic ferromagnet ($F_2$). For sufficiently thin superconductor ($S$) widths…

超导电性 · 物理学 2018-03-12 Klaus Halterman , Mohammad Alidoust

Two-level fluctuations of the magnetization state of pseudo spin-valve pillars Co(10 nm)/Cu(10 nm)/Co(30 nm) embedded in electrodeposited nanowires (~40 nm in diameter, 6000 nm in length) are triggered by spin-polarized currents of 10^7…

介观与纳米尺度物理 · 物理学 2009-11-10 A. Fabian , C. Terrier , S. Serrano Guisan , X. Hoffer , M. Dubey , L. Gravier , J. -Ph. Ansermet , J. -E. Wegrowe

We analyze magnetic phases of monolayers of transition metal dichalcogenides that are two-valley materials with electron-electron interactions. The exchange inter-valley scattering makes two-valley systems less stable to the spin…

强关联电子 · 物理学 2019-07-31 Dmitry Miserev , Jelena Klinovaja , Daniel Loss