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We study relaxation behaviour in the two-dimensional assembly of magnetic nanoparticles (MNPs) with aligned anisotropy axes and positional defects. The anisotropy axes orientation and disorder strength is changed by varying $\alpha$ and…

材料科学 · 物理学 2023-11-15 Manish Anand

Although the development of spintronic devices has advanced significantly over the past decade with the use of ferromagnetic materials, the extensive implementation of such devices has been limited by the notable drawbacks of these…

材料科学 · 物理学 2022-11-04 Kang Wang , Vineetha Bheemarasetty , Junhang Duan , Shiyu Zhou , Gang Xiao

Magnetization reversal in ferro- and ferrimagnets is a well-known archetype of non-equilibrium processes, where the volume fractions of the oppositely magnetized domains vary and perfectly compensate each other at the coercive magnetic…

We present experimental control of the magnetic anisotropy in a gadolinium iron garnet (GdIG) thin film from in-plane to perpendicular anisotropy by simply changing the sample temperature. The magnetic hysteresis loops obtained by SQUID…

材料科学 · 物理学 2017-06-27 H. Maier-Flaig , S. Geprägs , Z. Qiu , E. Saitoh , R. Gross , M. Weiler , H. Huebl , S. T. B. Goennenwein

A prominent character of two-dimensional magnetic systems is the enhanced spin fluctuations, which however reduce the ordering temperature. Here we report that a magnetic field of only one-thousandth of the Heisenberg superexchange…

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…

介观与纳米尺度物理 · 物理学 2026-04-20 Cheol-Yeon Cheon , Kenji Watanabe , Takashi Taniguchi , Alberto F. Morpurgo , Dmitry Lebedev

We report on magnetic anisotropy modulation in Bismuth substituted Yttrium Iron Garnet (Bi-YIG) thin films and mesoscale patterned structures deposited on a PMN-PT substrate with the application of voltage-induced strain. The Bi content is…

The concept of perpendicular shape anisotropy spin-transfer torque magnetic random-access memory (PSA-STT-MRAM) consists in increasing the storage layer thickness to values comparable to the cell diameter, to induce a perpendicular shape…

介观与纳米尺度物理 · 物理学 2021-08-18 N. Caçoilo , S. Lequeux , B. M. S. Teixeira , B. Dieny , R. C. Sousa , N. A. Sobolev , O. Fruchart , I. L. Prejbeanu , L. D. Buda-Prejbeanu

Van der Waals ferromagnet Fe3GaTe2 possesses both a high Curie temperature and robust perpendicular magnetic anisotropy, holding promise for practical spintronic applications. In particular, understanding and engineering its Gilbert damping…

材料科学 · 物理学 2025-09-11 Jie Wang , Shi-Bo Zhao , Jia-wan Li , Lin Zhuang , Yusheng Hou

We report our investigation of the electronic and magnetic excitations of Sr$_3$NiIrO$_6$ by resonant inelastic x-ray scattering at the Ir L$_3$ edge. The intra-$t_{2g}$ electronic transitions are analyzed using an atomic model, including…

Altermagnets break time-reversal symmetry and their spin-orbit coupling (SOC) allow for an anomalous Hall effect (AHE) that depends on the direction of the N\'eel ordering vector. The AHE and the ferromagnetic spin moment share the same…

强关联电子 · 物理学 2025-07-03 Mercè Roig , Yue Yu , Rune C. Ekman , Andreas Kreisel , Brian M. Andersen , Daniel F. Agterberg

Perpendicular magnetic tunnel junctions (p-MTJs) switched utilizing bipolar electric fields have extensive applications in energy-efficient memory and logic devices. Voltage-controlled magnetic anisotropy linearly lowers the energy barrier…

In this paper, the conventional Holstein-Primakoff method is generalized with the help of the characteristic angle transformation [Lei Zhou and Ruibao Tao, J. Phys. A {\bf 27} 5599 (1994)] for the spin-one magnetic systems with single-ion…

凝聚态物理 · 物理学 2009-10-28 Lei Zhou , Ruibao Tao

On the basis of Eilenberger theory, we study the vortex state when a magnetic field is applied nearly parallel to the ab plane in a chiral p-wave superconductor with a large anisotropy ratio of ab and c, as in Sr2RuO4. We quantitatively…

超导电性 · 物理学 2014-04-22 Masahiro Ishihara , Yuujirou Amano , Masanori Ichioka , Kazushige Machida

We discuss Chiral Magnetic Effect from quantum theory of measurements point of view for non-stationary measurements. The effect of anisotropy for fluctuations of electric currents in magnetic field is addressed. It is shown that anisotropy…

高能物理 - 唯象学 · 物理学 2015-06-16 V. I. Shevchenko

We present a theoretical study of in-plane magnetization reversal for vicinal ultrathin films using a one-dimensional micromagnetic model with nearest-neighbor exchange, four-fold anisotropy at all sites, and two-fold anisotropy at step…

材料科学 · 物理学 2009-10-31 R. A. Hyman , A. Zangwill , M. D. Stiles

We have performed magnetoresistance measurements on single-domain, submicron elliptical Ni particles using nonmagnetic probes in a four probe geometry at liquid helium temperatures. In the smallest particles, the magnetoresistance shows…

介观与纳米尺度物理 · 物理学 2009-11-07 J. Aumentado , V. Chandrasekhar

Control of the Neel vector in antiferromagnetic materials is one of the challenges preventing their use as active device components. Several methods have been investigated such as exchange bias, electric current, and spin injection, but…

应用物理 · 物理学 2019-05-01 In Jun Park , Taehwan Lee , Protik Das , Bishwajit Debnath , Greg P. Carman , Roger K. Lake

We study the penetration of an external magnetic field into a superconductor with collinear $d$-wave altermagnetic order. We demonstrate that instead of circular Abrikosov vortices, the magnetic field generates elliptical vortices with…

超导电性 · 物理学 2026-04-17 A. A. Mazanik , F. S. Bergeret

Interfacial perpendicular magnetic anisotropy, which is characterized by the first-order (K1) and second-order (K2) anisotropies, is the core phenomenon for nonvolatile magnetic devices. A sizable K2 satisfying a specific condition…

材料科学 · 物理学 2019-06-21 Hyung Keun Gweon , Hyeon-Jong Park , Kyoung-Whan Kim , Kyung-Jin Lee , Sang Ho Lim
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