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We report a new nonlocal effect in vortex matter, where an electric current confined to a small region of a long and sufficiently narrow superconducting wire causes vortex flow at distances hundreds of inter-vortex separations away. The…

Equal-spin Cooper pairs are pivotal building blocks for superconducting spintronics devices. In recent experiments, unusual behavior was observed in ferromagnet/ferromagnet/superconductor devices when a precession of the magnetization was…

超导电性 · 物理学 2023-01-19 X. Montiel , M. Eschrig

We investigate pure spin pumping in graphene by imposing a ferromagnet (F) with rotating magnetization on top of it. Using the generalized scattering approach for adiabatic spin pumping, we obtain the spin current pumped through magnetic…

介观与纳米尺度物理 · 物理学 2015-07-29 Mojtaba A. Rahimi , Ali G. Moghaddam

Spintronics relies on the ability to transport and utilize the spin properties of an electron rather than its charge. We describe a spin rachet at the single-electron level that produces spin currents with no net bias or charge transport.…

介观与纳米尺度物理 · 物理学 2011-03-02 Marius V. Costache , Sergio O. Valenzuela

Spin insulatronics covers efforts to generate, detect, control, and utilize high-fidelity pure spin currents and excitations inside magnetic insulators. Ultimately, the new findings may open doors for pure spin-based information and…

介观与纳米尺度物理 · 物理学 2020-10-27 Arne Brataas , Bart van Wees , Olivier Klein , Gregoire de Loubens , Michel Viret

The injection of spin currents in semiconductors is one of the big challenges of spintronics. Motivated by the ultrafast demagnetisation and spin injection into metals, we propose an alternative femtosecond route based on the laser…

材料科学 · 物理学 2016-05-25 M. Battiato , K. Held

We study the dynamics of spin valves consisting of two layers of magnetic insulators separated by a normal metal in the macrospin model. A current through the spacer generates a spin Hall current that can actuate the magnetization via the…

介观与纳米尺度物理 · 物理学 2014-08-19 Hans Skarsvåg , Gerrit E. W. Bauer , Arne Brataas

It is shown that the flow of electric current in an altermagnet results in the formation of a homogeneous electron spin orientation in the sample. The spin of the conduction electrons generated in altermagnets with $d$-wave spin-momentum…

介观与纳米尺度物理 · 物理学 2025-03-18 L. E. Golub , L. Šmejkal

Charge-to-spin conversion in inhomogeneous systems is studied theoretically. We consider free electrons subject to impurities with spin-orbit interaction and with spatially modulated distribution, and calculate spin accumulation and spin…

介观与纳米尺度物理 · 物理学 2020-09-30 T. Funato , H. Kohno

The pure spin currents, i.e., the counterflow of particles with opposite spin orientations, can be optically injected in semiconductors. Here, we develop a phenomenological theory, which describes the polarization dependencies of spin…

介观与纳米尺度物理 · 物理学 2009-11-13 E. L. Ivchenko , S. A. Tarasenko

Recent progress in physics on spin dependent transport in magnetic nanostructures is reviewed. Special attention is paid on the spin accumulation and spin current caused by spin injection into non-magnetic metals and semiconductors and…

介观与纳米尺度物理 · 物理学 2007-05-23 S. Maekawa

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 electron transport in ferromagnets or antiferromagnets sandwiched between metals. When spins in the magnetic materials precess, they emit currents into the surrounding conductors. Generally, adiabatic pumping in mesoscopic…

介观与纳米尺度物理 · 物理学 2020-08-17 Arne Brataas

Electron-magnon coupling at the interface between a normal metal and a magnetically ordered insulator modifies the electrical conductivity of the normal metal, an effect known as spin-Hall magnetoresistance. It can also facilitate…

介观与纳米尺度物理 · 物理学 2026-01-21 Oliver Franke , Duje Akrap , Piet W. Brouwer

The electrical manipulation of magnetization by current-induced spin torques has given access to realize a plethora of ultralow power and fast spintronic devices such as non-volatile magnetic memories, spin-torque nano-oscillators, and…

材料科学 · 物理学 2020-04-21 Yuya Tazaki , Yuito Kageyama , Hiroki Hayashi , Takashi Harumoto , Tenghua Gao , Ji Shi , Kazuya Ando

Intrinsic spin currents are encountered in noncentrosymmetric crystals without any external electric fields; these currents are caused by spin-orbit interaction. In this paper, various theoretical aspects of this phenomenon in bulk…

材料科学 · 物理学 2024-11-11 Ilja Turek

Converting angular momentum between different degrees of freedom within a magnetic material results from a dynamic interplay between electrons, magnons and phonons. This interplay is pivotal to implementing spintronic device concepts that…

We show how the spin-transfer torque generated by an ac voltage may be used to excite a paramagnetic resonance of an atomic spin deposited on a metallic surface. This mechanism is independent of the environment of the atom and may explain…

介观与纳米尺度物理 · 物理学 2019-03-06 Alexey M. Shakirov , Alexey N. Rubtsov , Pedro Ribeiro

We report electrical spin injection from a ferromagnetic metal contact into a semiconductor light emitting diode structure with an injection efficiency of 30% which persists to room temperature. The Schottky barrier formed at the Fe/AlGaAs…

材料科学 · 物理学 2009-11-07 Aubrey T. Hanbicki , B. T. Jonker , G. Itskos , G. Kioseoglou , A. Petrou

When a spin-polarized current flows through a ferromagnetic (FM) metal, angular momentum is transferred to the background magnetization via spin-transfer torques. In antiferromagnetic (AFM) materials, however, the corresponding problem is…

介观与纳米尺度物理 · 物理学 2015-06-15 Ran Cheng , Qian Niu