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The spin excitations of ordered magnets - magnons - mediate transport in magnetic insulators. Their bosonic nature makes them qualitatively distinct from electrons. These features include quantum properties traditionally realized with…

材料科学 · 物理学 2020-09-01 Akashdeep Kamra , Wolfgang Belzig , Arne Brataas

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

Altermagnet is an emerging antiferromagnetic material subclass that exhibits spin-splitting in momentum space without net global magnetization and spin-orbit-coupling effect. In this work, we develop a model of thermal charge injection…

介观与纳米尺度物理 · 物理学 2023-10-18 Yee Sin Ang

Angular momentum transport is one of the cornerstones of spintronics. Spin angular momentum is not only transported by mobile charge carriers, but also by the quantized excitations of the magnetic lattice in magnetically ordered systems. In…

介观与纳米尺度物理 · 物理学 2021-09-01 Matthias Althammer

Altermagnetism is a recently identified class of magnetic order characterized by unconventional momentum-dependent spin splitting in the absence of net magnetization, and understanding its electronic and magnetic properties is essential for…

强关联电子 · 物理学 2026-05-20 Shuyi Li , Adrian Bahri , Chunjing Jia

Compensated magnetic orders that can split the spin-degeneracy of electronic bands have become a very active field of research. As opposed to spin-orbit coupling, the splitting resulting from these "altermagnets" is not a small relativistic…

介观与纳米尺度物理 · 物理学 2026-01-08 Saurav Sachin , Mathias S. Scheurer , Constantin Schrade , Sujit Manna

Relativistic spin-orbit interaction drastically modifies electronic band and endows emergent functionalities. One of the example is the Rashba effect. In noncentrosymmetric systems such as interface and polar materials, the electronic band…

材料科学 · 物理学 2015-11-25 Y. Iguchi , S. Uemura , K. Ueno , Y. Onose

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

We theoretically investigate domain wall motion in an antiferromagnetic insulator layer caused by thermally generated spin currents in an adjacent spin-split superconductor layer. An uncompensated antiferromagnet interface enables the two…

超导电性 · 物理学 2021-03-17 G. A. Bobkov , I. V. Bobkova , A. M. Bobkov , Akashdeep Kamra

We study the influence of spin waves on transport through a single-level quantum dot weakly coupled to ferromagnetic electrodes with noncollinear magnetizations. Side peaks appear in the differential conductance due to emission and…

介观与纳米尺度物理 · 物理学 2010-11-15 Björn Sothmann , Jürgen König , Anatoli Kadigrobov

Hexagonal MnTe is an altermagnetic semiconductor with $g$-wave symmetry of spin polarization in momentum space. In the nonrelativistic limit, this symmetry mandates that electric current flowing in any crystallographic direction is…

材料科学 · 物理学 2025-02-25 K. D. Belashchenko

Thermally-driven spin-transfer torques have recently been reported in electrically insulating ferromagnet$|$normal-metal heterostructures. In this paper, we propose two physically distinct mechanisms for such torques. The first is a local…

介观与纳米尺度物理 · 物理学 2016-02-24 Scott A. Bender , Yaroslav Tserkovnyak

We theoretically demonstrate linear spin-wave nonreciprocity in a Ni80Fe20 nanostripe waveguide, based on interband magnonic transitions induced by a time-reversal and spatialinversion symmetry breaking magnetic field. An analytical…

介观与纳米尺度物理 · 物理学 2015-06-16 Kai Di , Hock Siah Lim , Vanessa Li Zhang , Ser Choon Ng , Meng Hau Kuok

Some strategies for reducing energy consumption in information processing devices involve the use of spin rather than charge to carry information. This idea is especially attractive when the spin current is a collective one carried by the…

介观与纳米尺度物理 · 物理学 2017-05-04 Hua Chen , Allan H. MacDonald

Electrical spin-current generation is among the core phenomena driving the field of spintronics. Using {\em ab initio} calculations we show that a room-temperature metallic collinear antiferromagnet RuO$_2$ allows for highly efficient…

Subpicosecond laser excitation of ferromagnetic metals induces strongly nonequilibrium dynamics involving scattering and transport of electrons, phonons, and magnons. Widely used theoretical approaches, such as the three-temperature model…

介观与纳米尺度物理 · 物理学 2026-05-21 Luca Mikadze , Peter M. Oppeneer , Markus Weißenhofer

Transport of fermions is central in many fields of physics. Electron transport runs modern technology, defining states of matter such as superconductors and insulators, and electron spin, rather than charge, is being explored as a new…

量子气体 · 物理学 2015-03-17 Ariel Sommer , Mark Ku , Giacomo Roati , Martin W. Zwierlein

In this paper, we study the Berry curvature induced linear and nonlinear magnon transport in bilayer van der Waals antiferromagnets, where we deduce forms for the spin and energy currents within the semiclassical Boltzmann formalism under…

介观与纳米尺度物理 · 物理学 2023-08-10 Rohit Mukherjee , Sonu Verma , Arijit Kundu

Altermagnetism, a new phase of collinear spin-order sharing similarities with antiferromagnets and ferromagnets, has introduced a new guiding principle for spintronic/thermoelectric applications due to its direction-dependent magnetic…

强关联电子 · 物理学 2025-08-19 Samuele Giuli , Carlos Mejuto-Zaera , Massimo Capone

We theoretically propose a realization of a nonlinear nonreciprocal transport in antiferromagnets without relying on the relativistic spin-orbit coupling. Through the symmetry and microscopic model analyses, we show that a local spin scalar…

强关联电子 · 物理学 2022-09-23 Satoru Hayami , Megumi Yatsushiro