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We observe a thermally induced spontaneous magnetization reversal of epitaxial ferromagnet/antiferromagnet heterostructures under a constant applied magnetic field. Unlike any other magnetic system, the magnetization spontaneously reverses,…

Materials Science · Physics 2009-11-11 Zhi-Pan Li , Johannes Eisenmenger , Casey W. Miller , Ivan K. Schuller

CuMnAs with perpendicular magnetic anisotropy is proposed as an active material for antiferromagnetic memory. Information can be stored in the antiferromagnetic domain state, while writing and readout can rely on the existence of the…

Materials Science · Physics 2018-10-26 I. A. Zhuravlev , A. Adhikari , K. D. Belashchenko

Ba$_{3}$NbFe$_{3}$Si$_{2}$O$_{14}$ (langasite) is structurally and magnetically single domain chiral with the magnetic helicity induced through competing symmetric exchange interactions. Using neutron scattering, we show that the spin-waves…

The field-driven reorientation transition of an anisotropic ferromagnetic monolayer is studied within the context of a finite-temperature Green's function theory. The equilibrium state and the field dependence of the magnon energy gap $E_0$…

Materials Science · Physics 2007-05-23 M. G. Pini , P. Politi , R. L. Stamps

Growing demands for the voltage-driven spintronic applications with ultralow-power consumption have led to new interest in exploring the voltage-induced magnetization switching in ferromagnetic metals. In this study, we observed a large…

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

Through systematics density functional calculations, the mechanism of the substrate induced spin reorientation transition in FePc/O-Cu(110) was explained in terms of charge transfer and rearrangement of Fe-d orbitals. Moreover, we found…

Materials Science · Physics 2014-01-14 Jun Hu , Ruqian Wu

A ribbon is a surface swept out by a line segment turning as it moves along a central curve. For narrow magnetic ribbons, for which the length of the line segment is much less than the length of the curve, the anisotropy induced by the…

Experimentally an asymmetry of the reversal modes has been found in certain exchange bias systems. From a numerical investigation of the domain state model evidence is gained that this effect depends on the angle between the easy axis of…

Condensed Matter · Physics 2009-11-10 B. Beckmann , U. Nowak , K. D. Usadel

We propose a robust two-terminal electrical readout scheme for detecting the N\'eel vector orientation in antiferromagnetic (AFM) materials by leveraging longitudinal nonreciprocal transport driven by quantum metric dipoles. Unlike…

Materials Science · Physics 2025-10-22 Guozhi Long , Hui Zeng , Mingxiang Pan , Wenhui Duan , Huaqing Huang

We report the direct observation of switching of the N\'eel vector of antiferromagnetic (AFM) domains in response to electrical pulses in micron-scale Pt/$\alpha$-Fe$_2$O$_3$ Hall bars using photoemission electron microscopy. Current pulses…

Mesoscale and Nanoscale Physics · Physics 2021-03-17 Egecan Cogulu , Nahuel N. Statuto , Yang Cheng , Fengyuan Yang , Rajesh V. Chopdekar , Hendrik Ohldag , Andrew D. Kent

Using micromagnetic simulations we demonstrate core reversal of a fixed magnetic skyrmion by modulating the perpendicular magnetic anisotropy of a nanomagnet with an electric field. We can switch reversibly between two skyrmion states and…

Mesoscale and Nanoscale Physics · Physics 2016-12-30 Dhritiman Bhattacharya , Md Mamun Al-Rashid , Jayasimha Atulasimha

Two-dimensional antiferromagnets, combining the dual advantages of van der Waals (vdW) and antiferromagnetic materials, provide an unprecedented platform for exploring emergent spin-related phenomena. However, electrical manipulation of…

An attractive feature of magnetic adatoms and molecules for nanoscale applications is their superparamagnetism, the preferred alignment of their spin along an easy axis preventing undesired spin reversal. The underlying magnetic anisotropy…

Mesoscale and Nanoscale Physics · Physics 2014-07-22 Maciej Misiorny , Michael Hell , Maarten R. Wegewijs

We study the effects of anisotropy on the magnetoresistance of Weyl semimetals (WSMs) in the ultraquantum regime. We utilize the fact that many Weyl semimetals are approximately axially anisotropic. We find that anisotropy manifests itself…

Mesoscale and Nanoscale Physics · Physics 2025-02-04 A. S. Dotdaev , Ya. I. Rodionov , K. I. Kugel , B. A. Aronzon

Antiferromagnetic spintronics actively introduces new principles of magnetic memory, in which the most fundamental spin-dependent phenomena, i.e. anisotropic magnetoresistance effects, are governed by an antiferromagnet instead of a…

Materials Science · Physics 2018-05-08 Chengliang Lu , Bin Gao , Haowen Wang , Wei Wang , Songliu Yuan , Shuai Dong , Jun-Ming Liu

A small fraction of phosphorus (up to 10 %) was incorporated in ferromagnetic (Ga,Mn)As epilayers grown on a GaAs substrate. P incorporation allows reducing the epitaxial strain or even change its sign, resulting in strong modifications of…

The two dimensional Spin-1 Blume-Capel ferromagnet is studied by Monte Carlo simulation with Metropolis algorithm. Starting from initial ordered spin configuration the reversal of magnetisation is investigated in presence of a magnetic…

Statistical Mechanics · Physics 2021-01-29 Moumita Naskar , Muktish Acharyya

We show that effective electrical control of the magnetic properties in the ferromagnetic semiconductor (Ga,Mn)As is possible using the strain induced by a piezoelectric actuator even in the limit of high doping levels and high Curie…

Materials Science · Physics 2015-06-05 A. Casiraghi , A. W. Rushforth , J. Zemen , J. A. Haigh , M. Wang , K. W. Edmonds , R. P. Campion , B. L. Gallagher

Understanding the electrical manipulation of antiferromagnetic order is a crucial aspect to enable the design of antiferromagnetic devices working at THz frequency. Focusing on collinear insulating antiferromagnetic NiO/Pt thin films as a…

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