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Related papers: Magnetism-driven ferroelectricity in spin-1/2 $XY$…

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The control of the magnetism of ultra-thin ferromagnetic layers using an electric field rather than a current, if large enough, would lead to many technologically important applications. To date, while it is usually assumed the changes in…

Materials Science · Physics 2013-12-05 Stewart E. Barnes , Jun'ichi Ieda , Sadamichi Maekawa

All-electrical and programmable manipulations of ferromagnetic bits are highly pursued for the aim of high integration and low energy consumption in modern information technology. Methods based on the spin-orbit torque switching in heavy…

We study ballistic transport through semiconductor quantum point contact systems under different confinement geometries and applied fields. In particular, we investigate how the {\em lateral} spin-orbit coupling, introduced by asymmetric…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Anh T. Ngo , P. Debray , Sergio Ulloa

The problem of electron resonant and non-resonant scatterings on two magnetized barriers is studied in the one-dimension. The transfer-matrix is built up to exactly calculate the coefficient of the electron transmittance through the system…

Mesoscale and Nanoscale Physics · Physics 2015-05-19 Armen N. Kocharian , Avag S. Sahakyan , Ruzan M. Movsesyan

The occurence of spin-polarization at ZrO$_{2}$, Al$_{2}$O$_{3}$ and MgO surfaces is proved by means of \textit{ab-initio} calculations within the density functional theory. Large spin moments, as high as 1.56 $\mu_B$, develop at O-ended…

Materials Science · Physics 2009-11-11 S. Gallego , J. I. Beltran , J. Cerda , M. C. Munoz

We perform 3D micromagnetic simulations of current-driven magnetization dynamics in nanoscale exchange biased spin-valves that take account of (i) back action of spin-transfer torque on the pinned layer, (ii) non-linear damping and (iii)…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 G. Siracusano , G. Finocchio , I. N. Krivorotov , L. Torres , G. Consolo , B. Azzerboni

A spin-1/2, Ising trilayered ferrimagnetic system on square Bravais lattice is studied, employing Monte-Carlo simulation with the single spin-flip Metropolis algorithm. The bulk of such a system is formed by three layers, each of which is…

Statistical Mechanics · Physics 2021-01-13 Soham Chandra

The mapping transformation technique is applied to obtain exact results for the spin-1/2 and spin-S (S=1/2,1) Ising-Heisenberg antiferromagnetic chain in the presence of an external magnetic field. Within this scheme, a field-induced…

Statistical Mechanics · Physics 2009-11-10 Jozef Strecka , Michal Jascur

The magnetic properties of the ferromagnetic-ferromagnetic-antiferromagnetic trimerized spin-1/2 Heisenberg chain are studied theoretically. The high temperature susceptibilty and the ground state saturation magnetic field are calculated…

Condensed Matter · Physics 2009-10-22 Kazuo Hida

We propose a kinetic theory of transport in metals embedded with ferromagnetic nanoclusters, describing the dependence of the form of magnetoresistance on anisotropy characteristics of the ensemble of clusters and the influence of the…

Materials Science · Physics 2010-08-12 O. Tsyplyatyev , Vladimir I. Fal'ko

We study the phase diagram of coupled spin-1/2 chains with bilinear and (chiral) three-spin exchange interactions in a magnetic field. The model is soluble on a one-parametric line in the space of coupling constants connecting the limiting…

Strongly Correlated Electrons · Physics 2009-10-31 Holger Frahm , Claus Rödenbeck

An experimental protocol is presented that allows the entropy generated by spin-transfer to be measured. The effect of a strong spin-polarized current injected on a ferromagnetic nanostructure is investigated with focusing on the…

Mesoscale and Nanoscale Physics · Physics 2008-08-05 J. -E. Wegrowe , Q. Anh Nguyen , T. L. Wade

The $S=1/2$ distorted diamond spin chain with the anisotropic ferromagnetic interaction is investigated using the numerical diagonalization and the level spectroscopy analysis. It is known that the system exhibits a plateau of the…

Strongly Correlated Electrons · Physics 2022-05-17 Tôru Sakai , Kiyomi Okamoto , Hiroki Nakano , Rito Furuchi

In a thin strip of a two-dimensional semiconductor electronic system, spin-orbit coupling may be induced near both edges of the strip due to the substantial spatial variation of the confining potential in the boundary regions. In this paper…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Yongjin Jiang , Liangbin Hu

Magnons offer a promising path toward energy-efficient information transmission and the development of next-generation classical and quantum computing technologies. However, methods to efficiently excite, manipulate, and detect magnons…

We present magnetodielectric measurements in single crystals of the cubic spin-1/2 compound Cu$_2$OSeO$_3$. A magnetic field-induced electric polarization ($\vec{P}$) and a finite magnetocapacitance (MC) is observed at the onset of the…

Strongly Correlated Electrons · Physics 2012-06-14 M. Belesi , I. Rousochatzakis , M. Abid , U. K. Rößler , H. Berger , J. -Ph. Ansermet

A magnetization process in two-dimensional ferrimagnet BIPNNBNO is analyzed. The compound consists of ferrimagnetic (1,1/2) chains coupled by two sorts of antiferromagnetic interactions. Whereas a behavior of the magnetization curve in…

Mesoscale and Nanoscale Physics · Physics 2011-12-08 V. E. Sinitsyn , I. G. Bostrem , A. S. Ovchinnikov , Y. Hosokoshi , K. Inoue

We investigate the magnetoelectric properties of the monolayer NiX$_{2}$ (X = Br, I) through first-principles calculations. Our calculations predict that the NiBr$_{2}$ monolayer exhibits a cycloidal magnetic ground state. For the NiI$_{2}$…

Materials Science · Physics 2025-01-10 Hui-Shi Yu , Xiao-Sheng Ni , Dao-Xin Yao , Kun Cao

We propose a novel ferroelectric switchable altermagnetism effect, the reversal of ferroelectric polarization is coupled to the switching of altermagnetic spin splitting. We demonstrate the design principles for the ferroelectric…

We investigate the ballistic electron transport in a two dimensional Quantum Wire under the action of an electric field ($E_y$). We demonstrate how the presence of a Spin Orbit coupling, due to the uniform electric confinement field gives a…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 S. Bellucci , P. Onorato