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A comprehensive theoretical investigation on the field-driven reorientation transitions in uniaxial multilayers with antiferromagnetic coupling is presented. It is based on a complete survey of the one-dimensional solutions for the basic…

Materials Science · Physics 2007-05-23 U. K. Roessler , A. N. Bogdanov

We demonstrate that the different magnetic states of a Mn12 molecule can be distinguished in a two-probe transport experiment from a complete knowledge of the current-voltage curve. Our results, obtained with state-of-the-art…

Materials Science · Physics 2009-05-05 C. D. Pemmaraju , I. Rungger , S. Sanvito

Reliable operation of perpendicular spin-transfer-torque magnetic random-access memory (p-STT-MRAM) requires control of magnetic alignment within the synthetic antiferromagnet (SAF) reference layer. At nanopillar dimensions, however,…

Mesoscale and Nanoscale Physics · Physics 2026-05-12 Afan Terko , George Lertzman-Lepofsky , Dieter Suess , Claas Abert , Erol Girt

Measurements of spin-orbit torques in a ferromagnetic/nonmagnetic multilayer are typically based on an assumption that the entire ferromagnetic layer uniformly responds to the spin-orbit torque. This assumption breaks down when the…

Applied Physics · Physics 2022-07-22 Ryan W. Greening , Xin Fan

We report the magnetic phase diagram of Mn$_{1-x}$Fe$_{x}$PSe$_3$ which represents a random magnet system of two antiferromagnetic systems with mixed spin, mixed spin anisotropies, mixed nearest neighbor magnetic interactions and mixed…

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

We explore the magnetoresistance (MC) effect in an organic semiconductor device based on the magnetic field related bipolaron formation. By establishing a group of dynamic equations, we present the transition among spin-parallel,…

Materials Science · Physics 2015-06-04 W. Qin , S. Yin , K. Gao , S. J. Xie

We theoretically investigate the interplay between charge ordering and magnetic states in quasi-one-dimensional molecular conductors TMTTF$_2X$, motivated by the observation of a complex variation of competing and/or coexisting phases. We…

Strongly Correlated Electrons · Physics 2012-03-26 Kazuyoshi Yoshimi , Hitoshi Seo , Shoji Ishibashi , Stuart E. Brown

We investigate the influence of magnetic order on the proximity-induced superconducting state in the Mn layers of a Mn-Nb(110) heterostructure by using a first-principles method. For this study, we use the recently developed Bogoliubov-de…

Superconductivity · Physics 2026-05-18 Sohair ElMeligy , Balázs Újfalussy , Kyungwha Park

Employment of the non-trivial proximity effect in Superconductor/Ferromagnet (S/F) heterostructures for creation of novel superconducting devices requires an accurate control of magnetic states in complex thin-film multilayers composing…

The electron-electron correlations in a many-electron (Ne = 1, 2,..., 5) quantum dot confined by a parabolic potential is investigated in the presence of a single magnetic ion and a perpendicular magnetic field. We obtained the energy…

Strongly Correlated Electrons · Physics 2008-11-19 Nga T. T. Nguyen , F. M. Peeters

The correlation kinetic equation approach is developed that allows describing spin correlations in a material with hopping transport. The quantum nature of spin is taken into account. The approach is applied to the problem of the bipolaron…

Disordered Systems and Neural Networks · Physics 2020-04-15 A. V. Shumilin

Magnetic correlations of two iso-structural quasi-one-dimensional (1D) antiferromagnetic spin-chain compounds Sr$M_2$V$_2$O$_8$ ($M$ = Co, Mn) have been investigated by magnetization and powder neutron diffraction. Two different collinear…

Strongly Correlated Electrons · Physics 2014-12-17 A. K. Bera , B. Lake , W. -D. Stein , S. Zander

We report muon spin relaxation ($\mu$SR) and magnetic susceptibility measurements on Cu(Cl,Br)La(Nb,Ta)$_{2}$O$_{7}$, which demonstrate: (a) the absence of static magnetism in (CuCl)LaNb$_{2}$O$_{7}$ down to 15 mK confirming a spin-gapped…

We investigate the structural, magnetic and spin-state transitions, and magnetocaloric properties of Sr$_{2-x}$La$_x$CoNbO$_6$ ($x=$ 0--1) double perovskites. The structural transition from tetragonal to monoclinic phase at $x$ $\geqslant$…

Materials Science · Physics 2020-04-21 Ajay Kumar , R. S. Dhaka

Spin-polarized transport through a band-gap-matched ZnSe/Zn_{1-x}Mn_{x} Se/ZnSe/Zn_{1-x}Mn_{x}Se/ZnSe multilayer structure is investigated. The resonant transport is shown to occur at different energies for different spins owing to the…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Zhen-Gang Zhu , Gang Su

In the search for rare-earth free permanent magnets, various ideas related to shape anisotropy are being pursued. In this work we assess the limits of shape contributions to the reversal stability using micromagnetic simulations. In a first…

Materials Science · Physics 2016-03-30 Simon Bance , Johann Fischbacher , Thomas Schrefl , Inga Zins , Gotthard Rieger , Caroline Cassignol

Magnetic dipole ($M1$) moments in nuclei neighboring the doubly-magic core are investigated by the self-consistent mean-field (SCMF) approaches that allow for the breaking of the time-reversal symmetry. By the SCMF calculations with the…

Nuclear Theory · Physics 2026-01-21 H. Nakada , H. Iwata

Using inelastic neutron scattering we measured the microscopic magnetic coupling associated with the ferromagnetic (FM) clusters of the ``colossal magnetoresistance'' (CMR) compound Pr$_{0.70}$Ca$_{0.30}$MnO$_3$. When the insulating to…

Strongly Correlated Electrons · Physics 2007-05-23 J. A. Fernandez-Baca , Pengcheng Dai , H. Kawano-Furukawa , H. Yoshizawa , E. W. Plummer , S. Katano , Y. Tomioka , Y. Tokura

The Spin Hall magnetoresistance (SMR) emerged as a reference tool to investigate the magnetic properties of materials with an all-electrical set-up. Its sensitivity to the magnetization of thin films and surfaces may turn it into a valuable…

Mesoscale and Nanoscale Physics · Physics 2024-11-01 Sara Catalano , Juan M. Gomez-Perez , M. Xochitl Aguilar-Pujol , Andrey Chuvilin , Marco Gobbi , Luis E. Hueso , Fèlix Casanova