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The magnetoelectric response in inversion-breaking two dimensional Dirac systems induced by strain is analyzed. It is shown that, in the same way that the piezoelectric response in these materials is related to the valley Chern number, the…

Strongly Correlated Electrons · Physics 2018-06-20 Pablo Rodriguez-Lopez , Alberto Cortijo

It is a highly nontrivial question whether a magnetization can be induced by applying a nonlinear temperature gradient in the absence of any linear component. In this work, we address this issue and provide explicit examples demonstrating…

Mesoscale and Nanoscale Physics · Physics 2026-04-08 Motohiko Ezawa

Slow magnetic relaxation and two level fluctuations measurements under high current injection is performed in single-contacted ferromagnetic nanostructures. The magnetic configurations of the samples are described by two metastable states…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 J. -E. Wegrowe

A single-sided magnet generates a magnetic field on only one side while canceling it on the opposite side, a feature that has enabled diverse applications in both fundamental science and engineering. Here, we propose the {\it inverse}…

Strongly Correlated Electrons · Physics 2025-04-10 Takayuki Ishitobi

The optical generation of nonequilibrium spin magnetization plays a crucial role in advancing spintronics, providing ultrafast control of magnetization dynamics without the need for magnetic fields. Here, we demonstrate the feasibility of…

Mesoscale and Nanoscale Physics · Physics 2024-09-19 Sayan Sarkar , Sunit Das , Debottam Mandal , Amit Agarwal

We consider a single spin in a constant magnetic field or an anisotropy field. We show that additional external time-periodic fields with zero mean may generate nonzero time-averaged spin components which are vanishing for the time-averaged…

Statistical Mechanics · Physics 2014-09-11 S. Flach , A. A. Ovchinnikov

The internal structure of the superconducting state in Sr$_2$RuO$_4$ remains elusive at present, and exhibits evidence for time-reversal symmetry breaking. Recent muon spin relaxation measurements under uniaxial strain have revealed an…

A first principles study is conducted to explore the changes in the magnetic structure of Mn\textsubscript{3}GaN under anisotropic biaxial strain. Mn\textsubscript{3}GaN is an antiperovskite with a structure similar to that of an ideal…

Materials Science · Physics 2025-10-22 Roman Malyshev , Ingeborg-Helene Svenum , Sverre M. Selbach , Thomas Tybell

We present the first materials specific ab initio theory of the magnetization induced by circularly polarized laser light in metals. Our calculations are based on non-linear density matrix theory and include the effect of absorption. We…

Materials Science · Physics 2016-09-28 Marco Berritta , Ritwik Mondal , Karel Carva , Peter M. Oppeneer

We demonstrate excitation of the gyrotropic mode in a magnetostrictive vortex by time-varying strain. The vortex dynamics is driven by a time-varying voltage applied to the piezoelectric substrate and detected electrically by spin…

Applied Physics · Physics 2023-12-01 Vadym Iurchuk , Jürgen Lindner , Jürgen Fassbender , Attila Kákay

Whenever the elastic energy of a solid depends on magnetic field, there is a magnetostrictive response. Field-linear magnetostriction implies piezomagnetism and vice versa. Here, we show that Mn$_3$Sn, a non-collinear antiferromanget with…

Strongly Correlated Electrons · Physics 2024-08-27 Qingkai Meng , Jianting Dong , Pan Nie , Liangcai Xu , Jinhua Wang , Shan Jiang , Huakun Zuo , Jia Zhang , Xiaokang Li , Zengwei Zhu , Leon Balents , Kamran Behnia

In this work, we propose a geometric nonlinear current response induced by magnetic resonance in magnetic Weyl semimetals. This phenomenon is in analog to the quantized circular photogalvanic effect previously proposed for Weyl semimetal…

Mesoscale and Nanoscale Physics · Physics 2024-10-28 Ruobing Mei , Chao-Xing Liu

Controlling magnetic anisotropy by orbital magnetic moments related to interfacial strains has considerable potential for the development of future devices using spins and orbitals. For the fundamental physics, the relationship between…

Materials Science · Physics 2019-05-10 Jun Okabayashi , Yoshio Miura , Tomoyasu Taniyama

We consider theoretically the effect of an inhomogeneous magnetoelectric coupling on the magnon-induced dynamics of a ferromagnet. The magnon-mediated magnetoelectric torque affects both the homogeneous magnetization and magnon-driven…

Mesoscale and Nanoscale Physics · Physics 2016-08-25 Vetle Risinggård , Iryna Kulagina , Jacob Linder

It has been demonstrated that magnetocrystalline anisotropies in (Ga,Mn)As are sensitive to lattice strains as small as 10^-4 and that strain can be controlled by lattice parameter engineering during growth, through post growth lithography,…

We investigate the role of lithographically-induced strain relaxation in a micron-scaled device fabricated from epitaxial thin films of the magnetostrictive alloy Fe81Ga19. The strain relaxation due to lithographic patterning induces a…

Reversible straintronic switching of a nanomagnet's magnetization between two stable or metastable states promises ultra-energy-efficient non-volatile memory. Here, we report strain-induced magnetization switching in ~300 nm sized FeGa…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 Hasnain Ahmad , Jayasimha Atulasimha , Supriyo Bandyopadhyay

Antiferromagnetic materials are promising platforms for the development of ultra-fast spintronics and magnonics due to their robust magnetism, high-frequency relativistic dynamics, low-loss transport, and the ability to support topological…

The newly discovered altermagnets are unconventional collinear compensated magnetic systems, exhibiting even (d, g, or i-wave) spin-polarization order in the band structure, setting them apart from conventional collinear ferromagnets and…

Materials Science · Physics 2024-02-02 Atasi Chakraborty , Rafael González Hernández , Libor šmejkal , Jairo Sinova

Supercurrent flow can induce a nonvanishing spin magnetization in noncentrosymmetric superconductors with spin-orbit interaction. Often known as the non-dissipative magnetoelectric effect, these are most commonly found at linear order in…

Superconductivity · Physics 2025-01-20 Jin-Xin Hu , Oles Matsyshyn , Justin C. W. Song