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We consider a synthetic antiferromagnetic spin-torque oscillator with anisotropic interlayer exchange coupling. This system exhibits exceptional points in its linearized dynamics. We find the non-linear dynamics and the dynamical phase…

Mesoscale and Nanoscale Physics · Physics 2023-02-16 R. A. Duine , V. Errani , J. S. Harms

An anisotropic spin model on a triangular semiinfinite lattice with ferromagnetic nearest-neighbour interactions and one antiferromagnetic next-nearest-neighbour interaction is investigated by the cluster transfer-matrix method. A phase…

Statistical Mechanics · Physics 2009-10-28 P. Pajersky , A. Surda

The spin dynamics of the semiclassical Heisenberg model with uniaxial anisotropy, on the layered triangular lattice with antiferromagnetic coupling for both intralayer nearest neighbor interaction and interlayer interaction is studied both…

Strongly Correlated Electrons · Physics 2007-05-23 Ranjan Chaudhury

Continuous quantum phase transitions involving all-in-all-out (AIAO) antiferromagnetic order in strongly spin-orbit-coupled 5d compounds could give rise to various exotic electronic phases and strongly-coupled quantum critical phenomena.…

Strongly Correlated Electrons · Physics 2020-07-01 Yishu Wang , T. F. Rosenbaum , D. Prabhakaran , A. T. Boothroyd , Yejun Feng

The observation of perpendicular magnetic anisotropy (PMA) at MgO/Fe interfaces boosted the development of spintronic devices based on ultrathin ferromagnetic layers. Yet, magnetization reversal in the standard magnetic tunnel junctions…

Mesoscale and Nanoscale Physics · Physics 2018-05-10 Isidoro Martínez , Coriolan Tiusan , Michel Hehn , Mairbek Chshiev , Farkhad G. Aliev

Topological chiral antiferromagnets, such as Mn$_{3}$Sn, are emerging as promising materials for next-generation spintronic devices due to their intrinsic transport properties linked to exotic magnetic configurations. Here, we demonstrate…

Antiferromagnets have been generating intense interest in the spintronics community, owing to their intrinsic appealing properties like zero stray field and ultrafast spin dynamics. While the control of antiferromagnetic (AFM) orders has…

Materials Science · Physics 2019-06-11 Haowen Wang , Chengliang Lu , Jun Chen , Yong Liu , S. L. Yuan , Sang-Wook Cheong , Shuai Dong , Jun-Ming Liu

We report unusual effects of nonmagnetic impurities on the spin-triplet superconductor Sr2RuO4. The substitution of nonmagnetic Ti4+ for Ru4+ induces localized-moment magnetism characterized by unexpected Ising anisotropy with the easy axis…

Strongly Correlated Electrons · Physics 2009-11-07 M. Minakata , Y. Maeno

The ground states of square lattice two-dimensional antiferromagnets with anisotropy in an external magnetic field are determined using Monte Carlo simulations and compared to theoretical analysis. We find a new phase in between the…

Mesoscale and Nanoscale Physics · Physics 2016-08-10 Rick Keesman , Mark Raaijmakers , A. E. Baerends , G. T. Barkema , R. A. Duine

Superpositions of spin helices can yield topological spin textures, such as two-dimensional vortices and skyrmions, and three-dimensional hedgehogs. Their topological nature and spatial dimensionality depend on the number and relative…

Strongly Correlated Electrons · Physics 2021-02-24 Kotaro Shimizu , Shun Okumura , Yasuyuki Kato , Yukitoshi Motome

A structural and thermodynamic study of the newly synthesized single crystal Sr5Rh4O12 is reported. Sr5Rh4O12 consists of a triangular lattice of spin chains running along the c-axis. It is antiferromagnetically ordered below 23 K with the…

Strongly Correlated Electrons · Physics 2015-06-25 G. Cao , S. Parkin , P. Schlottmann

We investigate the anisotropic spin motive force in $\alpha$-(BEDT-TTF)$_2$I$_3$, which is a multi-layered massless Dirac fermion system under pressure. Assuming the interlayer antiferromagnetic interaction and the interlayer anisotropic…

Mesoscale and Nanoscale Physics · Physics 2015-05-21 K. Kubo , T. Morinari

A detailed study of poly- and single crystalline samples of the normal spinel HgCr2S4 is reported. The structural refinement reveals enhanced values of the atomic displacements suggesting closeness to a structural instability.…

Materials Science · Physics 2009-11-11 V. Tsurkan , J. Hemberger , A. Krimmel , H. -A. Krug von Nidda , P. Lunkenheimer , S. Weber , V. Zestrea , A. Loidl

Motivated by recent experiments on undoped La2CuO4, which found pronounced temperature-dependent anisotropies in the low-field magnetic susceptibility, we have investigated a two-dimensional square lattice of S=1/2 spins that interact via…

Strongly Correlated Electrons · Physics 2009-11-11 K. V. Tabunshchyk , R. J. Gooding

One-dimensional (1D) magnetism offers unidirectional spin interactions that allow unique tunable properties and unconventional spin phenomena. However, it often suffers from poor stability, limiting practical applications. In this regard,…

Materials Science · Physics 2025-06-03 Alberto M. Ruiz , Andrei Shumilin , Sourav Dey , Diego López-Alcalá , José J. Baldoví

We investigate the instability toward a skyrmion crystal under an in-plane magnetic field in centrosymmetric tetragonal magnets. By performing the simulated annealing for a spin model on the square lattice, we find that the interplay among…

Strongly Correlated Electrons · Physics 2024-12-06 Satoru Hayami

Altermagnet is a newly discovered magnetic phase, characterized by non-relativistic spin-splitting that has been experimentally observed. Here, we introduce a framework dubbed {\it spin-orbital altermagnetism} to achieve spin-orbital…

Strongly Correlated Electrons · Physics 2025-09-22 Zi-Ming Wang , Yang Zhang , Song-Bo Zhang , Jin-Hua Sun , Elbio Dagotto , Dong-Hui Xu , Lun-Hui Hu

One of recent surprising discoveries is the unusual anisotropic magnetoresistance (UAMR) that depends on two magnetization components perpendicular to the current differently, in contrast to the conventional anisotropic magnetoresistance…

Mesoscale and Nanoscale Physics · Physics 2023-07-19 M. Q. Dong , Zhi-Xin Guo , X. R. Wang

The anisotropic magnetic properties of Sr$_2$IrO$_4$ are investigated, using longitudinal and torque magnetometry. The critical scaling across $T_c$ of the longitudinal magnetization is the one expected for the 2D XY universality class.…

Strongly Correlated Electrons · Physics 2016-04-20 L. Fruchter , D. Colson , V. Brouet

A family of ferrimagnets (CoV2O4, GdCo, TbCo) exhibits out-of-plane magnetic anisotropy when strained compressively and in-plane magnetic anisotropy when strained expansively (or vice versa). If such a ferrimagnetic thin film is placed on…

Materials Science · Physics 2026-02-12 Supriyo Bandyopadhyay