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The topological Hall effect (THE), as one of the primary manifestations of non-trivial topology of chiral skyrmions, is traditionally used to detect the emergence of skyrmion lattices with locally ferromagnetic order. In this work we…

材料科学 · 物理学 2017-05-18 Patrick M. Buhl , Frank Freimuth , Stefan Blügel , Yuriy Mokrousov

Complexity of quantum phases of matter is often understood by the underlying gauge structures, as was recognized by the $\mathbb{Z}_2$ and U(1) gauge theory description of spin liquid in frustrated magnets. Anomalous Hall effect of…

Spin Seebeck effect (SSE), the generation of spin current from heat, has been extensively studied in a large variety of magnetic materials, including ferromagnets, antiferromagnets, paramagnets, and quantum spin liquids. In this paper, we…

Topological transport phenomena in magnetic materials are a major topic of current condensed matter research. One of the most widely studied phenomena is the ``topological Hall effect'' (THE), which is generated via spin-orbit interactions…

Non-resonant circularly polarized electromagnetic radiation can exert torques on magnetization by the Inverse Faraday Effect (IFE). Here we discuss the enhancement of IFE by spin-orbit interactions (SOI). We illustrate the principle by…

介观与纳米尺度物理 · 物理学 2014-10-08 Fateme K. Joibari , Ya. M. Blanter , Gerrit E. W. Bauer

The spin Hall effect is a phenomenon that an electric field induces a spin Hall current. In this Letter, we examine the inverse effect that, in a ferromagnetic conductor, a charge Hall current is induced by a spin motive force, or a…

介观与纳米尺度物理 · 物理学 2009-11-13 Junya Shibata , Hiroshi Kohno

Altermagnets (AMs) and fully compensated ferrimagnets (FC-FIMs) are emerging classes of magnetic materials that combine the advantages of antiferromagnets and ferromagnets. Here, we elucidate the mechanism behind the uniaxial strain-driven…

材料科学 · 物理学 2026-04-20 Weifeng Xie , Libo Wang , Yunliang Yue , Xiong Xu , Huayan Xia , Hui Wang

Owing to their inherent characteristics of zero stray field and terahertz dynamics, two-dimensional (2D) zero-net-magnetization magnets demonstrate the potential for miniaturization, ultradensity and ultrafast performance. Recently,…

材料科学 · 物理学 2025-03-20 Liguo Zhang , San-Dong Guo , Gangqiang Zhu

Spin-orbit torques (SOTs) have emerged as an efficient means to electrically control the magnetization in ferromagnetic heterostructures. Lately, an increasing attention has been devoted to SOTs in heavy metal (HM)/magnetic insulator (MI)…

材料科学 · 物理学 2023-05-09 Martín Testa-Anta , Charles-Henri Lambert , Can Onur Avci

While altermagnetic materials are characterized by a vanishing net magnetic moment, their symmetry in principle allows for the existence of an anomalous Hall effect (AHE). Here we introduce a model with altermagnetism in which the emergence…

强关联电子 · 物理学 2024-09-05 Toshihiro Sato , Sonia Haddad , Ion Cosma Fulga , Fakher F. Assaad , Jeroen van den Brink

We theoretically explore the generation of spin current driven by a temperature gradient in a junction between a chiral insulator and a normal metal. Based on the gyromagnetic response induced by microscopic acoustic-phonon-mediated lattice…

介观与纳米尺度物理 · 物理学 2025-08-20 Naoki Nishimura , Takumi Funato , Mamoru Matsuo , Takeo Kato

We investigate the spin Seebeck effect and spin pumping in a junction between a ferromagnetic insulator and a magnetic impurity deposited on a normal metal. By the numerical renormalization group calculation, we show that spin current is…

介观与纳米尺度物理 · 物理学 2021-09-15 Tsuyoshi Yamamoto , Takeo Kato , Mamoru Matsuo

The Kane-Mele model is known to show a quantized spin Hall conductivity at zero temperature. Including Hubbard interactions at each site leads to a quantum phase transition to an XY antiferromagnet at sufficiently high interaction strength.…

强关联电子 · 物理学 2024-02-22 D. Lessnich , C. Gauvin-Ndiaye , Roser Valentí , A. -M. S. Tremblay

Anisotropic skyrmion Hall effect (A-SkHE) in two-dimensional (2D) magnetic systems represents a captivating phenomenon in condensed-matter physics and materials science. While conventional antiferromagnetic systems inherently suppress this…

材料科学 · 物理学 2026-02-13 Kaiying Dou , Zhonglin He , Wenhui Du , Ying Dai , Baibiao Huang , Yandong Ma

Thermodynamic properties of cubic Heisenberg ferromagnets with competing exchange interactions are considered near the frustration point where the coefficient $D$ in the spin-wave spectrum $E_{\mathbf{k}}\sim D k^{2}$ vanishes. Within the…

强关联电子 · 物理学 2013-04-11 A. N. Ignatenko , A. A. Katanin , V. Yu. Irkhin

The time-reversal symmetry ($\mathcal{T}$) breaking is a signature of ferromagnetism, giving rise to such phenomena as the anomalous Hall effect (AHE) and orbital magnetism. Nevertheless, $\mathcal{T}$ can be also broken in certain classes…

材料科学 · 物理学 2026-04-10 I. V. Solovyev

The magnitude of spin accumulation created in semiconductors by electrical injection of spin-polarized electrons from a ferromagnetic tunnel contact is investigated, focusing on how the spin signal detected in a Hanle measurement varies…

介观与纳米尺度物理 · 物理学 2012-11-20 S. Sharma , A. Spiesser , S. P. Dash , S. Iba , S. Watanabe , B. J. van Wees , H. Saito , S. Yuasa , R. Jansen

Ferrimagnet (FiM), (FeCo)1-xGdx, attracts research attention due to its ultrafast magnetic dynamics and finite net magnetization. Incorporating FiM into the magnetic tunnel junction will be beneficial to further improve the writing speed of…

介观与纳米尺度物理 · 物理学 2024-01-04 Xue Zhang , Zhengde Xu , Jie Ren , Yixiao Qiao , Weijia Fan , Zhifeng Zhu

A complete set of the generalized drift-diffusion equations for a coupled charge and spin dynamics in ferromagnets in the presence of extrinsic spin-orbit coupling is derived from the quantum kinetic approach, covering major transport…

介观与纳米尺度物理 · 物理学 2018-05-02 C. O. Pauyac , M. Chshiev , A. Manchon , S. A. Nikolaev

We investigate the injection of quasiparticle spin currents into a superconductor via spin pumping from an adjacent FM layer.$\;$To this end, we use NbN/\ch{Ni80Fe20}(Py)-heterostructures with a Pt spin sink layer and excite ferromagnetic…

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