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Anisotropic magnetoresistance (AMR) offers a robust electrical readout of antiferromagnetic (AFM) states, playing a central role in the rapidly advancing field of AFM spintronics. Despite its great versatility, electrical probing of the…

Mesoscale and Nanoscale Physics · Physics 2026-04-20 Cheol-Yeon Cheon , Kenji Watanabe , Takashi Taniguchi , Alberto F. Morpurgo , Dmitry Lebedev

We present a method for precisely measuring the tunnel splitting in single-molecule magnets using electron-spin resonance, and use these measurements to precisely and independently determine the underlying transverse anisotropy parameter,…

Mesoscale and Nanoscale Physics · Physics 2016-12-13 Charles A. Collett , Rafael A. Allão Cassaro , Jonathan R. Friedman

The tunnelling anisotropic magnetoresistance (TAMR) effect describes the sensitivity of spin-polarized electron transport to the orientation of the magnetization with respect to the crystallographic axes. As the TAMR effect requires only a…

Materials Science · Physics 2015-06-19 Nuala M. Caffrey , Silke Schröder , Paolo Ferriani , Stefan Heinze

We compute magnon Hall conductivities in a minimal model of a two-dimensional altermagnet. To do so, we derive an analytic expression for the relevant quantum geometric tensor describing two-band bosonic Bogoliubov Hamiltonians, providing…

Strongly Correlated Electrons · Physics 2025-08-21 Erlend Syljuåsen , Alireza Qaiumzadeh , Asle Sudbø

We discuss spin-wave transport in anisotropic ferromagnets with an emphasis on the zeroes of the band edges as a function of a magnetic field. An associated divergence of the magnon spin should be observable by enhanced magnon…

Mesoscale and Nanoscale Physics · Physics 2023-04-24 G. E. W. Bauer , P. Tang , M. Elyasi , Y. M. Blanter , B. J. van Wees

Electrical resistivities can be different for charge currents travelling parallel or perpendicular to the magnetization in magnetically ordered conductors or semiconductors, resulting in the well-known planar Hall effect and anisotropic…

Mesoscale and Nanoscale Physics · Physics 2018-10-30 J. Liu , L. J. Cornelissen , J. Shan , T. Kuschel , B. J. van Wees

In a recent high-quality experimental work on normal metal--superconducting nanowire junctions arXiv:1807.01940 (2018), strong anisotropic suppression of induced superconductivity has been observed in tunnel conductance measurements in the…

Mesoscale and Nanoscale Physics · Physics 2019-01-24 Chun-Xiao Liu , Jay D. Sau , Tudor D. Stanescu , S. Das Sarma

An electrodynamic technique is developed for determining the components of surface impedance and complex conductivity tensors of HTSC single crystals on the basis of measured quantities of a quality factor and a resonator frequency shift. A…

We investigate transverse charge and spin dc supercurrents in a ferromagnet coupled to a superconductor where the ferromagnet has inhomogeneous magnetic structure. These transverse supercurrents arise from non-trivial structure of the…

Superconductivity · Physics 2021-08-31 Takehito Yokoyama , Yukio Tanaka , Shuichi Murakami

We derive the complete form of the van der Waals dispersion interaction between two infinitely long anisotropic semiconducting/insulating thin cylinders at all separations. The derivation is based on the general theory of dispersion…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 A. Šiber , R. F. Rajter , R. H. French , W. Y. Ching , V. A. Parsegian , R. Podgornik

The recently discovered van der Waals antiferromagnets have suffered from the lack of a comprehensive method to study their magnetic properties. Here, we propose a dissipationless magnon spin Hall current driven by surface acoustic waves as…

Mesoscale and Nanoscale Physics · Physics 2024-06-06 Ryotaro Sano , Yuya Ominato , Mamoru Matsuo

An intense transient magnetic field is produced in high energy heavy-ion collisions mostly due to the spectator protons inside the two colliding nucleus. The magnetic field introduces anisotropy in the medium and hence the isotropic scalar…

Hall effect and magnetoresistance have been measured on single crystals of the parent phase NaFeAs under a uniaxial pressure. Although significant difference of the in-plane resistivity $\rho_{xx}(I\parallel a)$ and $\rho_{xx}(I\parallel…

Superconductivity · Physics 2015-09-21 Qiang Deng , Jie Xing , Jianzhong Liu , Huan Yang , Hai-Hu Wen

Spin-dependent transport in a full van der Waals (vdW) giant magnetoresistance (GMR) junctions with the structure of Fe3GeTe2/XTe2/Fe3GeTe2 (X = Pt, Pd) has been investigated by using first-principles calculations. The ballistic…

Materials Science · Physics 2021-10-07 Xinlu Li , Yurong Su , Meng Zhu , Fanxing Zheng , Peina Zhang , Jia Zhang , Jing-Tao Lü

We report transport measurement in zero and applied magnetic field on a single crystal of NbAs. Transverse and longitudinal magnetoresistance in the plane of this tetragonal structure does not saturate up to 9 T. In the transverse…

Materials Science · Physics 2015-06-24 N. J. Ghimire , Yongkang Luo , M. Neupane , D. J. Williams , E. D. Bauer , F. Ronning

Van der Waals (vdW) ferromagnets are an important class of materials for spintronics applications. The recent discovery of atomically vdW magnets CrI$_3$ and Cr$_2$Ge$_2$Te$_6$ has triggered a renaissance in the area of two-dimensional (2D)…

Strongly Correlated Electrons · Physics 2021-10-22 Yu Liu , Zhixiang Hu , Eli Stavitski , Klaus Attenkofer , C. Petrovic

Anisotropic magnetoresistance (AMR) is a relativistic magnetotransport phenomenon arising from combined effects of spin-orbit coupling and broken symmetry of a ferromagnetically ordered state of the system. In this work we focus on one…

A conducting two-dimensional periodic composite of two anisotropic phases with anisotropic, not necessarily symmetric, conductivity tensors is considered. By finding approximate representations for the relevant operators, an approximation…

Mathematical Physics · Physics 2018-03-06 Graeme W. Milton

This paper deals with bounds satisfied by the effective non-symmetric conductivity of three-dimensional composites in the presence of a strong magnetic field. On the one hand, it is shown that for general composites the antisymmetric part…

Analysis of PDEs · Mathematics 2015-05-28 Marc Briane , Graeme W. Milton

Current-driven reconnection is investigated as a possible mechanism for angular momentum transport in astrophysical disks. A theoretical and computational study of angular momentum transport from current-driven magnetohydrodynamic…

High Energy Astrophysical Phenomena · Physics 2015-05-30 F. Ebrahimi , S. C. Prager