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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

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

While recent experiments on the spin Seebeck effect have revealed the decisive role of the magnon contribution to the heat current $Q$ in hybrid systems containing thin ferromagnetic layers, the available acoustic mismatch theory does not…

介观与纳米尺度物理 · 物理学 2018-12-12 Valerij A. Shklovskij , Volodymyr V. Kruglyak , Ruslan V. Vovk , Oleksandr V. Dobrovolskiy

In this article we extend the currently established diffusion theory of spin-dependent electrical conduction by including spin-dependent thermoelectricity and thermal transport. Using this theory, we propose new experiments aimed at…

介观与纳米尺度物理 · 物理学 2012-01-17 A. Slachter , F. L. Bakker , B. J. van Wees

We predict that the magnetization direction of a ferromagnet can be reversed by the spin-transfer torque accompanying spin-polarized thermoelectric heat currents. We illustrate the concept by applying a finite-element theory of…

介观与纳米尺度物理 · 物理学 2009-11-13 Moosa Hatami , Gerrit E. W. Bauer , Qinfang Zhang , Paul J. Kelly

We study heat transport in a one-dimensional inhomogeneous quantum spin 1/2 system. It consists of a finite-size XX spin chain coupled at its ends to semi-infinite XX and XY chains at different temperatures, which play the role of heat and…

强关联电子 · 物理学 2015-05-13 Liliana Arrachea , Gustavo S. Lozano , A. A. Aligia

In the past, magnons have been shown to mediate thermal transport of spin in various systems. Here, we reveal that the fundamental coupling of scalar spin chirality, inherent to magnons, to the electronic degrees of freedom in the system…

介观与纳米尺度物理 · 物理学 2019-10-16 Li-chuan Zhang , Fabian R. Lux , Jan-Philipp Hanke , Patrick M. Buhl , Sergii Grytsiuk , Stefan Blügel , Yuriy Mokrousov

We point out a relation between the dissipative spin-transfer-torque parameter $\beta$ and the contribution of magnon drag to the thermoelectric power in conducting ferromagnets. Using this result we estimate $\beta$ in iron at low…

介观与纳米尺度物理 · 物理学 2015-05-30 M. E. Lucassen , C. H. Wong , R. A. Duine , Y. Tserkovnyak

Thermal and electrical injection and transport of magnon spins in magnetic insulators is conventionally understood by the non-equilibrium population of magnons. However, this view is challenged by several recent experiments in noncollinear…

介观与纳米尺度物理 · 物理学 2025-10-21 Xiyin Ye , Tao Yu

The effect of spin mixing due to thermal spin waves and temperature dependence of hot electron spin polarization to the collector current in a spin-valve transistor has been theoretically explored. We calculate the collector current as well…

凝聚态物理 · 物理学 2009-11-07 Jisang Hong , P. S. Anil Kumar

All-solid-state nanoscale devices capable of efficiently controlling a heat flow are crucial for advanced thermal management technologies. Here we predict a magnon-driven magnetothermal resistance (mMTR) effect in multilayers of…

介观与纳米尺度物理 · 物理学 2025-07-03 Ping Tang , Ken-ichi Uchida , Gerrit E. W. Bauer

Spin-dependent transport at heavy metal/magnetic insulator interfaces is at the origin of many phenomena at the forefront of spintronics research. A proper quantification of the different interfacial spin conductances is crucial for many…

We study a bilayer structure consisting of an antiferromagnetic insulator and a normal metal. An electron current is driven in the normal metal with direction parallel to the interface between the materials. Due to interfacial exchange…

介观与纳米尺度物理 · 物理学 2022-06-01 Eirik Erlandsen , Asle Sudbø

Motivated by experimental work showing enhancement of spin transport between Yttrium Iron Garnet and Platinum by a thin antiferromagnetic insulator between them, we consider spin transport through the interface of a non-magnetic metal and…

介观与纳米尺度物理 · 物理学 2024-03-29 Mahsa Seyed Heydari , Wolfgang Belzig , Niklas Rohling

We develop a theory for spin transported by coherent Neel dynamics through an antiferromagnetic insulator coupled to a ferromagnetic insulator on one side and a current-carrying normal metal with strong spin-orbit coupling on the other. The…

介观与纳米尺度物理 · 物理学 2015-07-22 So Takei , Takahiro Moriyama , Teruo Ono , Yaroslav Tserkovnyak

We derive diffusion equations, which describe spin-charge coupled transport on the helical metal surface of a three-dimensional topological insulator. The main feature of these equations is a large magnitude of the spin-charge coupling,…

介观与纳米尺度物理 · 物理学 2013-05-29 A. A. Burkov , D. G. Hawthorn

We develop a comprehensive description of static and dynamic spin-transfer torque at interfaces between a normal metal and a magnetic material. Specific examples of the latter include ferromagnets, collinear and noncollinear…

介观与纳米尺度物理 · 物理学 2017-09-13 Yaroslav Tserkovnyak , Hector Ochoa

We study ballistic thermal transport in Heisenberg spin chain with nearest-neighbor ferromagnetic interactions at low temperatures. Explicit expressions for transmission coefficients are derived for thermal transport in a periodic spin…

统计力学 · 物理学 2008-10-16 Lifa Zhang , Jian-Sheng Wang , Baowen Li

We use quantum Monte Carlo to determine the magnetic and transport properties of coupled square lattice spin and fermionic planes as a model for a metal-insulator interface. Specifically, layers of Ising spins with an intra-layer exchange…

强关联电子 · 物理学 2015-07-17 R. Mondaini , T. Paiva , R. T. Scalettar

The hot electron magnetotransport in a spin-valve transistor has been theoretically explored at finite temperatures. We have explored the parallel and anti-parallel collector current changing the relative spin orientation of the…

凝聚态物理 · 物理学 2009-11-07 Jisang Hong