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We revisit the formulations and simulations of angular distributions in polarization-dependent core-level photoemission spectra of strongly correlated electron systems, in order to explain the recently discovered linear dichroism (LD) in…

Strongly Correlated Electrons · Physics 2018-12-19 Akira Sekiyama , Yuina Kanai , Arata Tanaka , Shin Imada

Linear polarized soft-x ray absorption (XAS) and inelastic neutron scattering (INS) experiments have been performed on CeMIn5 with M = Rh, Ir, and Co to determine the crystal-field scheme and characteristic Kondo temperatures T* for the…

The electronic structure of the heavy fermion compound CeB6 is probed by resonant inelastic soft X-ray scattering using photon energies across the Ce 3d and 4d absorption edges. The hybridization between the localized 4f orbitals and the…

Materials Science · Physics 2012-01-04 M. Magnuson , S. M. Butorin , J. -H. Guo , A. Agui , J. Nordgren , H. Ogasawara , A. Kotani , T. Takahashi , S. Kunii

A new technical method is developed for soft x-ray spectroscopy of near-edge x-ray absorption fine structure (NEXAFS). The measurement is performed with continuously rotating linearly polarized light over 2$\pi$, generated by a segmented…

Instrumentation and Detectors · Physics 2021-11-10 Yoshiki Kudo , Yasuyuki Hirata , Masafumi Horio , Masahito Niibe , Iwao Matsuda

We present experimental XMLD spectra measured on epitaxial (001)-oriented thin Co$_{2}$FeSi films, which are rich in features and depend sensitively on the degree of atomic order and interdiffusion from capping layers. Al- and Cr-capped…

An interaction potential energy between and adsorbate (Xe and Ar) and the 10-fold Al-Ni-Co quasicrystal is computed by summing over all adsorbate-substrate interatomic interactions. The quasicrystal atoms' coordinates are obtained from LEED…

Materials Science · Physics 2009-11-10 R. A. Trasca , N. Ferralis , R. D. Diehl , M. W. Cole

We investigated Co/Cu lateral spin valves by means of high-resolution transmission soft x-ray microscopy with magnetic contrast that utilizes x-ray magnetic circular dichroism (XMCD). No magnetic XMCD contrast was observed at the Cu L$_3$…

Other Condensed Matter · Physics 2015-05-13 O. Mosendz , G. Mihailovic , J. E. Pearson , P. Fischer , M. -Y. Im , S. D. Bader , A. Hoffmann

An implementation of the multiple-scattering approach to x-ray magnetic circular dichroism (XMCD) in K-edge x-ray absorption spectroscopy is presented. The convergence problems due to the cluster size and the relativistic corrections are…

Condensed Matter · Physics 2009-10-28 Ch. Brouder , M. Alouani , K. H. Bennemann

We performed a soft x-ray magnetic circular dichroism (XMCD) study of a Zn$_{1-x}$V$_x$O thin film which showed small ferromagnetic moment. Field and temperature dependences of V 2$p$ XMCD signals indicated the coexistence of Curie-Weiss…

We study the spin-dependent electronic structure of UTe and UT_{2}Si_{2} (T=Cu and Mn) compounds with a combination of x-ray magnetic circular dichroism measurements and first principle calculations. By exploiting the presence of sizable…

Strongly Correlated Electrons · Physics 2016-01-12 R. D. dos Reis , L. S. I. Veiga , D. Haskel , J. C. Lang , Y. Joly , F. G. Gandra , N. M. Souza-Neto

The absorption and emission spectra of transitions between a localized level and a two-dimensional electron gas, subjected to a weak magnetic field, are calculated analytically. Adopting the Landau level bosonization technique developed in…

Mesoscale and Nanoscale Physics · Physics 2009-10-30 H. Westfahl , A. O. Caldeira , D. Baeriswyl , E. Miranda

We study the electronic and magnetic properties of T$_2$AlC (T=Ti and Cr) compounds in the density-functional theory using the generalized gradient approximation (GGA) with consideration of strong Coulomb correlations (GGA+$U$) in the…

Materials Science · Physics 2023-05-26 L. V. Bekenov , S. V. Moklyak , B. F. Zhuravlev , Yu. N. Kucherenko , V. N. Antonov

The magnetic atom diffusion at the interface between CoMn alloy and MnGa layer with annealing is studied using x-ray magnetic circular dichroism (XMCD) analysis. We found that the spins in bcc CoMn are coupled parallel to those in…

Materials Science · Physics 2022-12-12 Jun Okabayashi , Kazuya Z. Suzuki , Shigemi Mizukami

Altermagnetism is a recently identified magnetic symmetry class combining characteristics of conventional collinear ferromagnets and antiferromagnets, that were regarded as mutually exclusive, and enabling phenomena and functionalities…

Hematite $\alpha$-Fe$_2$O$_3$ is a $g$-wave altermagnetic material, which has an easy-axis phase and easy-plane weak ferromagnetic phase below and above Morin transition temperature, respectively. The presence of these phases renders it a…

Materials Science · Physics 2025-12-15 Ruiwen Xie , Hamza Zerdoumi , Hongbin Zhang

Some of the most exotic material properties derive from electronic states with short correlation length (~10-500 {\AA}), suggesting that the local structural symmetry may play a relevant role in their behavior. Here we discuss the combined…

Materials Science · Physics 2017-04-05 Gilberto Fabbris , Markus Hücker , Genda Gu , John M. Tranquada , Daniel Haskel

We have measured the X-ray absorption (XAS) and X-ray magnetic circular dichroism (XMCD)at the Mn L3,2 edges in ferromagnetic Ga1-xMnxP for 0.018<x<0.042. Large XMCD asymmetries at the L3 edge indicate significant spin-polarization of the…

Lanthanide 4f electrons are strongly influenced by spin-orbit coupling, resulting in well-defined J multiplets, which are further split by the crystalline electric field in condensed matter. While the anisotropy of 4f electrons is closely…

The 2p core excited XAS and XMCD spectra of Cr$_{1-\delta}$Te with several concentrations of $\delta$=0.11-0.33 have been measured. The observed XMCD lineshapes are found to very weakly depend on $\delta$. The experimental results are…

Materials Science · Physics 2007-05-23 K. Yaji , A. Kimura , C. Hirai , H. Sato , M. Taniguchi , M. Koyama , K. Shimada , A. Tanaka , T. Muro , S. Imada , S. Suga

We study the origin of dichroic effects in elastic scattering of high energy electrons by hydrogen atoms in the presence of a two-color bicircular laser field of commensurate frequencies, in the domain of moderate intensities below 10…

Atomic Physics · Physics 2023-09-27 Gabriela Buica