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Spin transport through magnetic insulators via magnons has recently been explored for a growing variety of magnetic systems with long-range order and well-understood spin excitation spectra. Here we show dramatic effects of spin transport…

介观与纳米尺度物理 · 物理学 2017-10-25 Devin Wesenberg , Tao Liu , Davor Balzar , Mingzhong Wu , Barry L. Zink

We study the temperature dependence of the spin Hall magnetoresistance (SMR) in yttrium iron garnet/platinum hybrid structures via magnetization orientation dependent magnetoresistance measurements. Our experiments show a decrease of the…

介观与纳米尺度物理 · 物理学 2015-09-10 Sibylle Meyer , Matthias Althammer , Stephan Geprägs , Matthias Opel , Rudolf Gross , Sebastian T. B. Goennenwein

Angular momentum transport in magnetic multilayered structures plays a central role in spintronic physics and devices. The angular momentum currents or spin currents are carried by either quasi-particles such as electrons and magnons, or by…

材料科学 · 物理学 2025-08-04 Kai Chen , Weiwei Lin , C. L. Chien , Shufeng Zhang

Spin current injection and spin accumulation near a ferromagnetic insulator (FI)/nonmagnetic metal (NM) bilayer film under a thermal gradient is investigated theoretically. Using the Fermi golden rule and the Boltzmann equations, we find…

介观与纳米尺度物理 · 物理学 2016-07-13 Y. H. Shen , X. S. Wang , X. R. Wang

We study the role of thermal magnons in the spin and heat transport across a normal-metal/insulating-ferromagnet interface, which is beyond an elastic electronic spin transfer. Using an interfacial exchange Hamiltonian, which couples spins…

介观与纳米尺度物理 · 物理学 2015-04-16 Scott A. Bender , Yaroslav Tserkovnyak

Using one of the methods of quantum nonequilibrium statistical physics we have investigated the spin transport transverse to the normal metal/ferromagnetic insulator interface in hybrid nanostructures. An approximation of the effective…

介观与纳米尺度物理 · 物理学 2015-06-11 I. I. Lyapilin , M. S. Okorokov , V. V. Ustinov

Recent experimental and theoretical studies focus on spin-mediated heat currents at interfaces between normal metals and magnetic insulators. We resolve conflicting estimates for the order of magnitude of the spin transfer torque by…

材料科学 · 物理学 2015-05-27 Xingtao Jia , Kai Liu , Ke Xia , Gerrit E. W. Bauer

We develop a theory for spin transport in magnetic metals that treats the contribution of magnons and electrons on equal footing. As an application we consider thermally-driven spin injection across an interface between a magnetic metal and…

介观与纳米尺度物理 · 物理学 2018-08-29 Maarten Beens , Joseph P. Heremans , Yaroslav Tserkovnyak , R. A. Duine

The interface between a ferro-/ferrimagnetic insulator and a normal metal can support spin currents polarized collinear with and perpendicular to the magnetization direction. The flow of angular momentum perpendicular to the magnetization…

介观与纳米尺度物理 · 物理学 2023-01-23 David A. Reiss , Piet W. Brouwer

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 interplay between spin and heat currents at magnetic insulator|nonmagnetic metal interfaces has been a subject of much scrutiny because of both fundamental physics and the promise for technological applications. While ferrimagnetic and,…

介观与纳米尺度物理 · 物理学 2019-06-13 Benedetta Flebus , Yaroslav Tserkovnyak , Gregory A. Fiete

We study the magnon spin transport in the magnetic insulator yttrium iron garnet (YIG) in a nonlocal experiment and compare the magnon spin excitation and detection for the heavy metal paramagnetic electrodes platinum (Pt|YIG|Pt) and…

介观与纳米尺度物理 · 物理学 2018-06-05 Jing Liu , Ludo J. Cornelissen , Juan Shan , Bart J. van Wees , Timo Kuschel

A theoretical formulation for spin transport through an antiferromagnetic (AF) insulator is presented in the case driven/detected by direct/inverse spin Hall effect in two heavy metal contacts. The spin signal is shown to be transferred by…

介观与纳米尺度物理 · 物理学 2019-05-15 Gen Tatara , Christian Ortiz Pauyac

Spin currents can modify the magnetic state of ferromagnetic ultrathin films through spin-orbit torque. They may be generated by means of spin-orbit interaction by either bulk or interfacial phenomena. Electrical transport measurements…

介观与纳米尺度物理 · 物理学 2022-06-27 A. Anadón , R. Guerrero , J. A. Jover-Galtier , A. Gudín , J. M. Díez , P. Olleros-Rodríguez , R. Miranda , J. Camarero , P. Perna

The spin phenomena observed at a clean metall-insulator interface are typically reduced to Rashba-Edelstein effect, that leads to spin accumulation over a few monolayers. We demonstrate that the presence of interface disorder significantly…

介观与纳米尺度物理 · 物理学 2023-09-08 A. V. Shumilin , V. V. Kabanov

We theoretically investigate spin transport at the interface between the ferromagnetic insulator(FI) and a superconductor(SC). Considering a simple FI-SC interface model, we derive formulas for the spin current and spin-current noise…

介观与纳米尺度物理 · 物理学 2019-04-24 T. Kato , Y. Ohnuma , M. Matsuo , J. Rech , T. Jonckheere , T. Martin

Although spin injection at room temperature in an IrMn metallic antiferromagnet strongly depends on the transport regime, and is more efficient in the case of magnonic transport, in this article, we present experimental data demonstrating…

We consider an antiferromagnetic insulator that is in contact with a metal. Spin accumulation in the metal can induce spin-transfer torques on the staggered field and on the magnetization in the antiferromagnet. These torques relate to spin…

介观与纳米尺度物理 · 物理学 2018-02-14 Sverre A. Gulbrandsen , Arne Brataas

We theoretically investigate the fluctuation of a pure spin current induced by the spin Seebeck effect and spin pumping in a normal metal (NM)/ferromagnet (FM) bilayer system. Starting with a simple FI--NM interface model with both…

介观与纳米尺度物理 · 物理学 2018-01-24 M. Matsuo , Y. Ohnuma , T. Kato , S. Maekawa

Spin transport of magnonic excitations in uniaxial insulating antiferromagnets (AFs) is investigated. In linear response to spin biasing and a temperature gradient, the spin transport properties of normal-metal--insulating…

介观与纳米尺度物理 · 物理学 2020-02-05 Roberto E. Troncoso , Scott A. Bender , Arne Brataas , Rembert A. Duine
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