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In the highly non-equilibrium conditions of laser induced spin dynamics magnetic moments can only be obtained from the spectral information, most commonly from the spectroscopy of semi-core states using the so-called x-ray magnetic circular…

Materials Science · Physics 2021-04-05 S. Shallcross , J. K. Dewhurst , P. Elliott , S. Eisebitt , C. von Korff Schmising , S. Sharma

A description of non-collinear magnetism in the framework of spin-density functional theory is presented for the exact exchange energy functional which depends explicitly on two-component spinor orbitals. The equations for the effective…

We present a systematic study of the magnetic proximity effect in Pt, depending on the magnetic moment and anisotropy of adjacent metallic ferromagnets. Element-selective x-ray resonant magnetic reflectivity measurements at the Pt…

We have investigated spin and orbital magnetic moments of the Re 5d ion in the double perovskites A2FeReO6 (A = Ba, Sr, Ca) by X-ray magnetic circular dichroism (XMCD) at the Re L(2,3) edges. In these ferrimagnetic compounds an unusually…

We have constructed an analytic formula to treat the perpendicular magnetic anisotropy energy in ferromagnetic metals with low symmetry, such as C4V and C3V. We find that the anisotropy energy is proportional to a part of the expectation…

Materials Science · Physics 2019-03-27 Yoshishige Suzuki , Shinji Miwa

Surface magnetic properties of perovskite manganites have been a recurrent topic during last years since they play a major role in the implementation of magnetoelectronic devices. Magneto-optical techniques, such as X-ray magnetic circular…

Materials Science · Physics 2007-06-07 S. Valencia , A. Gaupp , W. Gudat , Ll. Abad , Ll. Balcells , B. Martinez

We present detailed investigations of the magnetic properties of an Fe monolayer on W and Ta (110) surfaces based on the ab initio screened Korringa-Kohn-Rostoker method. By calculating tensorial exchange coupling coefficients, the ground…

Strongly Correlated Electrons · Physics 2015-05-01 Levente Rózsa , László Udvardi , László Szunyogh , István A. Szabó

A fully relativistic ab-initio study on free Rh clusters of 13-135 atoms is performed to identify general trends concerning their magnetism and to check whether concepts which proved to be useful in interpreting magnetism of 3d metals are…

Materials Science · Physics 2016-03-18 Ondrej Sipr , Hubert Ebert , Jan Minar

Recent experiments on Pd$_{3}$Fe intermetallics [Phys. Rev. Lett. 102, 237202 (2009)] have revealed that the system behaves like a classical invar alloy under high pressure. The experimental pressure-volume relation suggests an anomalous…

Materials Science · Physics 2012-10-03 Biswanath Dutta , Sumanta Bhandary , Subhradip Ghosh , Biplab Sanyal

Recent experiments on isolated Co clusters have shown huge orbital magnetic moments in comparison with their bulk and surface counterparts. These clusters hence provide the unique possibility to study the evolution of the orbital magnetic…

Terahertz vortex beams with different superposition of the orbital angular momentum $l={\pm}1$, ${\pm}2$, ${\pm}3$, and ${\pm}4$ and spin angular momentum ${\sigma}={\pm}1$ were used to study antiferromagnetic (AFM) resonances in…

Strongly Correlated Electrons · Physics 2021-04-21 A. A. Sirenko , P. Marsik , L. Bugnon , M. Soulier , C. Bernhard , T. N. Stanislavchuk , S. -W. Cheong

First principles calculations of the O surfaces of Co-ZnO show that substitutional Co ions develop large magnetic moments which long-range coupling depends on their mutual distance. The local spin polarization induced at the O atoms is…

Materials Science · Physics 2009-11-13 N. Sanchez , S. Gallego , M. C. Munoz

The recently discovered giant magnetic anisotropy of single magnetic Co atoms raises the hope of magnetic storage in small clusters. We present a joint experimental and theoretical study of the magnetic anisotropy and the spin dynamics of…

Materials Science · Physics 2009-07-06 T. Balashov , T. Schuh , A. F. Takacs , A. Ernst , S. Ostanin , J. Henk , I. Mertig , P. Bruno , T. Miyamachi , S. Suga , W. Wulfhekel

Co islands and films are characterized by x-ray magnetic circular dichroism photoemission electron microscopy (XMCD-PEEM). The spatial resolution capabilties of the technique together with atomic growth control permit obtaining perfectly…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 A. Mascaraque , L. Aballe , J. F. Marco , T. O. Mentes , F. El Gabaly , C. Klein , A. K. Schmid , K. F. McCarty , A. Locatelli , J. de la Figuera

Noncollinear chiral spin textures in ferromagnetic multilayers are at the forefront of recent research in nano-magnetism with the promise for fast and energy-efficient devices. The recently demonstrated possibilities to stabilize such…

This paper presents the results of simulations of the magnetization field {\it ac} response (at $2$ to $12$ GHz) of various submicron ferrite particles (cylindrical dots). The ferrites in the present simulations have the spinel structure,…

Materials Science · Physics 2010-07-06 Christine C. Dantas , Adriana M. Gama

We present results of first-principles calculations of the magnetic properties of Fe chains deposited on the Re(0001) surface. By increasing the length of the chain, a transition is found from an almost collinear antiferromagnetic state for…

Mesoscale and Nanoscale Physics · Physics 2019-05-31 András Lászlóffy , Levente Rózsa , Krisztián Palotás , László Udvardi , László Szunyogh

We have studied the effect of cobalt substitution in $L1_{0}$-Fe$_{1-x}$Co$_{x}$Pt films by means of x-ray magnetic circular dichroism (XMCD) and first-principles calculations. The magnetic moments of Fe ($\sim$2.5 $\mu_{\rm B}$) and Co…

X-ray magnetic circular dichroism (XMCD) and X-ray magnetic linear dichroism (XMLD) are powerful spectroscopic techniques for probing magnetic properties in solids. In this study, we revisit the XMCD and XMLD sum rules within a complete…

Materials Science · Physics 2025-07-03 Y. Yamasaki , Y. Ishii , N. Sasabe

We have observed that CoO films grown on different substrates show dramatic differences in their magnetic properties. Using polarization dependent x-ray absorption spectroscopy at the Co L$_{2,3}$ edges, we revealed that the magnitude and…

Strongly Correlated Electrons · Physics 2007-05-23 S. I. Csiszar , M. W. Haverkort , Z. Hu , A. Tanaka , H. H. Hsieh , H. -J. Lin , C. T. Chen , T. Hibma , L. H. Tjeng