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We investigate the effect of coupling (intensity and nature), applied field, and anisotropy on the spin dynamics of a multi-layer system composed of a hard magnetic slab coupled to a soft magnetic slab through a nonmagnetic spacer. The soft…

Materials Science · Physics 2015-06-12 Andres Felipe Franco , Hamid Kachkachi

Electric field induced magnetization switching in single-phase multiferroic materials is intriguing for both fundamental studies and potential technological applications. Here we develop a framework to study the switching dynamics of…

Mesoscale and Nanoscale Physics · Physics 2015-06-26 Kuntal Roy

This paper investigates the relationship among interlayer exchange coupling (IEC), Dzyaloshinskii-Moriya interaction (DMI), and multilevel magnetization switching within a Co/Pt/Co heterostructure, where varying Pt thicknesses enable…

Mesoscale and Nanoscale Physics · Physics 2023-12-21 Krzysztof Grochot , Piotr Ogrodnik , Jakub Mojsiejuk , Piotr Mazalski , Urszula Guzowska , Witold Skowroński , Tomasz Stobiecki

It has been theoretically demonstrated that two spins (qubits or qutrits), coupled by exchange interaction only, undergo a coupling-based joint Landau-Majorana-St\"uckelberg-Zener (LMSZ) transition when a linear ramp acts upon one of the…

Quantum Physics · Physics 2020-07-29 Roberto Grimaudo , Hiromichi Nakazato , Antonino Messina , Nikolay V. Vitanov

We study the modification of low temperature properties of quantum magnets such as magnetization, heat capacity, energy spectrum, and densities of condensed and noncondensed quasiparticles (triplons) due to anisotropies in the framework of…

Statistical Mechanics · Physics 2021-11-05 Abdulla Rakhimov , Asliddin Khudoyberdiev , Bilal Tanatar

Based on the micromagnetic simulations the magnetization switching in a triangle magnetic element by voltage-control of magnetic anisotropy and Dzyaloshinskii-Moriya interaction under in-plane magnetic field is proposed. The proposed…

Mesoscale and Nanoscale Physics · Physics 2019-06-05 Hiroshi Imamura , Takayuki Nozaki , Shinji Yuasa , Yoshishige Suzuki

We investigate the far-from-equilibrium nature of magnetic anisotropy and exchange interactions between molecular magnets embedded in a tunnel junction. By mapping to an effective spin model, these magnetic interactions can be divided into…

Mesoscale and Nanoscale Physics · Physics 2015-01-08 Jonas Fransson , Jie Ren , Jian-Xin Zhu

We apply degenerate perturbation theory to investigate the effects of magnetic anisotropy in the magnetic molecule V15. Magnetic anisotropy is introduced via Dzyaloshinskii-Moriya (DM) interaction in the full Hilbert space of the system.…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 N. P. Konstantinidis , D. Coffey

Anisotropic spin-spin interactions of the symmetry described by Dzyaloshinsky and Moriya are generally considered weak, as they depend on the spin-orbit couplings. In frustrated spin systems with singlet ground states they can, however,…

Strongly Correlated Electrons · Physics 2009-11-07 O. Cepas , T. Sakai , T. Ziman

It is shown how the exchange interaction, the dipole-dipole interaction, and the Dzyaloshinsky-Moriya interaction between electronic spin-density fluctuations emerge naturally from a field-theoretic framework that couples electrons to the…

Strongly Correlated Electrons · Physics 2013-10-01 D. Belitz , T. R. Kirkpatrick

The magnetic exchange interaction is the one of the key factors governing the basic characteristics of magnetic systems. Unlike the symmetric nature of the Heisenberg exchange interaction, the interfacial Dzyaloshinskii-Moriya interaction…

Chiral magnetic insulators manifest novel phases of matter where the sense of rotation of the magnetization is associated with exotic transport phenomena. Effective control of such phases and their dynamical evolution points to the search…

Materials Science · Physics 2023-01-24 Paula Mellado , Kevin Hofhuis , Ignacio Tapia , Andres Concha

The switching of magnetic layers is studied under the action of a spin current in a ferromagnetic metal/non-magnetic metal/ferromagnetic metal spin valve. We find that the main contribution to the switching comes from the non-equilibrium…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 C. Heide , P. E. Zilberman , R. J. Elliott

We study solitons in a zig-zag lattice of magnetic dipoles. The lattice comprises two sublattices of parallel chains with magnetic dipoles at their vertices. Due to orthogonal easy planes of rotation for dipoles belonging to different…

Materials Science · Physics 2023-02-28 Paula Mellado , Ignacio Tapia

We introduce a theoretical framework for computaions of anisotropic multipolar exchange interactions found in many spin--orbit coupled magnetic systems and propose a method to extract these coupling constants using a density functional…

Strongly Correlated Electrons · Physics 2014-08-01 Shu-Ting Pi , Ravindra Nanguneri , Sergey Savrasov

Magnetic domain walls are objects whose dynamics is inseparably connected to their structure. In this work we investigate magnetic bilayers, which are engineered such that a coupled pair of domain walls, one in each layer, is stabilized by…

Mesoscale and Nanoscale Physics · Physics 2018-06-06 Aleš Hrabec , Viola Křižáková , Stefania Pizzini , João Sampaio , André Thiaville , Stanislas Rohart , Jan Vogel

The Dzyaloshinskii-Moriya (DM) interaction is an antisymmetric exchange interaction that is responsible for the emergence of chiral magnetism. The origin of the DM interaction, however, remains to be identified albeit the large number of…

Mesoscale and Nanoscale Physics · Physics 2019-07-03 Naoaki Kato , Masashi Kawaguchi , Yong-Chang Lau , Toru Kikuchi , Yoshinobu Nakatani , Masamitsu Hayashi

Understanding the effects of the Dzyaloshinskii-Moriya interaction (DMI) has become increasingly important in the context of nanoscale magnetism and spintronics. In this study, we derive a general structure factor equation for an S = 1/2…

Materials Science · Physics 2025-09-03 Evan M. Wilson , Joseph A. Prescott , Jason T. Haraldsen

By using magnetization and small-angle neutron scattering (SANS) measurements, we have investigated the magnetic behavior of Mn_{1-x}Ir_{x}Si system to explore the effect of increased carrier density and spin-orbit interaction on the…

Materials Science · Physics 2017-12-21 Chetan Dhital , Lisa DeBeer-Schmitt , Qiang Zhang , Weiwei Xie , David P. Young , John F. DiTusa

The influence of the spin-orbit coupling on the magnetic structure of deposited transition metal nanostructure systems has been studied by fully relativistic electronic structure calculations. The interplay of exchange coupling and magnetic…

Materials Science · Physics 2009-02-20 S. Mankovsky , S. Bornemann , J. Minár , S. Polesya , H. Ebert , J. B. Staunton , A. I. Lichtenstein
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