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The Hamiltonian of a two dimensional (2D) magnetic material in the strong correlation regime with a spin texture, for which both azimuthal and polar angle changes, is solved using $su(2)$ path integral method. The dependence of the Chern…

介观与纳米尺度物理 · 物理学 2024-07-12 Kaushal Kumar Kesharpu

"Hidden"-order phases with high-rank multipolar order parameters have been recently detected in several cubic double perovskites of 5$d$ transition metals. Here, by constructing and solving an ab initio low-energy Hamiltonian, we show that…

强关联电子 · 物理学 2025-04-02 Dario Fiore Mosca , Leonid V. Pourovskii

Magnetic ordering beyond the standard dipolar order has attracted significant attention in recent years, but it remains an open question how to effectively manipulate such nontrivial order parameters using external perturbations. In this…

材料科学 · 物理学 2023-09-08 Muhammad Tahir , Hua Chen

We show results of global 3D MHD simulations of accretion onto stars with superposition of the dipole and octupole fields, where we vary the ratio between components. Simulations show that if octupolar field strongly dominates at the…

高能天体物理现象 · 物理学 2015-05-14 Min Long , Marina M. Romanova , Frederick K. Lamb

Recent advances in manipulation of orbital angular momentum (OAM) within the paradigm of orbitronics present a promising avenue for the design of future electronic devices. In this context, the recently observed orbital Hall effect (OHE)…

In most conductors current flow perpendicular to electric field direction (Hall current) can be explained in terms of the Lorentz forces present when charged particles flow in an external magnetic field. However, as established in the very…

材料科学 · 物理学 2014-01-14 Hua Chen , Qian Niu , A. H. MacDonald

Accurate modeling of transition metal-containing compounds is of great interest due to their wide-ranging and significant applications. These systems present several challenges from an electronic structure perspective, including significant…

Exploration of the novel relationship between magnetic order and topological semimetals has received enormous interest in a wide range of both fundamental and applied research. Here we predict that soft ferromagnetic (FM) material EuB6 can…

材料科学 · 物理学 2020-02-26 Simin Nie , Yan Sun , Fritz B. Prinz , Zhijun Wang , Hongming Weng , Zhong Fang , Xi Dai

The magneto-transport properties of planar and layered strongly inhomogeneous two-phase systems are investigated, using the explicit expressions for the effective conductivities and resistivities obtained by the exact dual transformation,…

无序系统与神经网络 · 物理学 2009-11-11 S. A. Bulgadaev

The anomalous Hall effect is deemed to be a unique transport property of ferromagnetic metals, caused by the concerted action of spin polarization and spin-orbit coupling. Nevertheless, recent experiments have shown that the effect also…

介观与纳米尺度物理 · 物理学 2016-04-06 Steven S. -L. Zhang , Giovanni Vignale

The Orbital Hall effect, which originates from materials with weak spin-orbit coupling, has attracted considerable interest for spin-orbitronic applications. Here, we demonstrate the inverse effect of the orbital Hall effect and observe…

介观与纳米尺度物理 · 物理学 2023-06-19 Ping Wang , Zheng Feng , Yuhe Yang , Delin Zhang , Quancheng Liu , Zedong Xu , Zhiyan Jia , Yong Wu , Guoqiang Yu , Xiaoguang Xu , Yong Jiang

We investigate the effect of pressure on the electronic and magnetic states of CdV$_2$O$_4$ by using ab initio electronic structure calculations. The Coulomb correlation and spin-orbit coupling play important role in deciding the…

强关联电子 · 物理学 2012-08-06 Sudhir K. Pandey

The interplay between magnetism and strong topological insulator gives rise to distinct new topological phases and various intriguing phenomena, attracting significant attention in recent years. However, magnetic effects in weak topological…

介观与纳米尺度物理 · 物理学 2024-09-05 Rui Chen , Xiao-Xia Yi , Bin Zhou , Dong-Hui Xu

A comparative study of anomalous-Hall current injection and anisotropic current injection (through planar Hall effect) are studied in Hall devices contacted to a lateral load circuit. Hall currents are injected into the load circuit from…

介观与纳米尺度物理 · 物理学 2025-10-06 V. Desbuis , D. Lacour , M. Hehn , S. Geiskopf , L. Michez , J. Rial , V. Baltz , J. -E. Wegrowe

Electrical control of the non-trivial topology in Weyl antiferromagnet is of great interests to develop next-generation spintronic devices. Recent works suggest that spin Hall effect can switch the topological antiferromagnetic order.…

We present a new method of acoustically driven resonance that probes octupole degrees of freedom as well as a quadrupole usually hidden by the magnetic properties of a crystal field quartet. A characteristic of the quadrupole is reflected…

强关联电子 · 物理学 2026-03-18 Mikito Koga , Masashige Matsumoto

The anomalous Hall effect is mainly used to probe the magnetization orientation in ferromagnetic materials. A less explored aspect is the torque acting back on magnetization, an effect that can be important at high currents. The spin-orbit…

介观与纳米尺度物理 · 物理学 2020-06-24 Ioan Tudosa

Perpendicularly magnetized materials have attracted tremendous interest due to their high anisotropy, which results in extremely narrow, nano-sized domain walls. As a result, the recently studied current-induced domain wall motion (CIDWM)…

材料科学 · 物理学 2015-06-11 P. P. J. Haazen , E. Murè , J. H. Franken , R. Lavrijsen , H. J. M. Swagten , B. Koopmans

The generation of spin and orbital currents is of crucial importance in the field of spin-orbitronics. In this work, using relativistic density functional theory and the Kubo linear-response formalism, we systematically investigate the spin…

材料科学 · 物理学 2022-04-01 Leandro Salemi , Peter M. Oppeneer

Recent neutron measurement in the icosahedral quasicrystal approximant Au-SM-Tb (SM=Al, Ga) has revealed unique noncollinear magnetic order ``whirling-anti-whirling states''. Here, we report theoretical analysis on the…

强关联电子 · 物理学 2026-02-04 Shinji Watanabe , Tatsuya Iwasaki