Kyushu Institute of Technology Academic Repository
Kyutacarは九州工業大学で生産された研究成果を オープンアクセスで提供する機関リポジトリシステムです。 Kyutacar is open-access repository of research by members of the Kyushu Institute of Technology.
Graduate School of Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan, Center for Chiral Science, Hiroshima University, Higashihiroshima 739-8526, Japan
RIKEN SPring-8 Center, Hyogo 679-5148, Japan
Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA
Institute of Scientific and Industrial Research, Osaka University, Osaka 567-0047, Japan
Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA
Japan Synchrotron Radiation Research Institute (JASRI), Hyogo 679-5198, Japan
Japan Synchrotron Radiation Research Institute (JASRI), Hyogo 679-5198, Japan
Japan Synchrotron Radiation Research Institute (JASRI), Hyogo 679-5198, Japan
Center for Chiral Science, Hiroshima University, Higashihiroshima 739-8526, Japan, Graduate School of Engineering, Osaka Prefecture University, Sakai 599-8531, Japan
Center for Chiral Science, Hiroshima University, Higashihiroshima 739-8526, Japan, Graduate School of Arts and Sciences, The Open University of Japan, Chiba 261-8586, Japan
Center for Chiral Science, Hiroshima University, Higashihiroshima 739-8526, Japan, Graduate School of Engineering, Osaka Prefecture University, Sakai 599-8531, Japan
Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
Center for Chiral Science, Hiroshima University, Higashihiroshima 739-8526, Japan, Graduate School of Science, Hiroshima University, Higashihiroshima 739-8526, Japan, Institute for Advanced Materials Research, Hiroshima University, Higashihiroshima 739-8526, Japan
抄録
The chiral magnet CrNb3S6 with its solitonic objects has novel magnetic and transport properties, in which the spin-orbit coupling (SOC) plays a central role. Aiming to address the possible existence of orbital moments driven by SOC, we perform soft x-ray magnetic circular dichroism spectroscopy at the Cr L2,3 edges with in-plane magnetization. The dichroic signals provide direct experimental evidence that the Cr orbital magnetic moment is not quenched and is coupled antiparallel to the spin counterpart. Application of the orbital sum rule reveals that the magnitude of the Cr orbital moment is about 1% of the total magnetization. These findings are consistent with the first-principles electronic structure calculations that utilize the Cr 2p core radial function to define the Cr local 3d quantities. The distinct roles of the atomic SOC among the Cr 3d and Nb 4d states are discussed.
Observation of orbital angular momentum in the chiral magnet CrNb3S6 by soft x-ray magnetic circular dichroism
scunit-2020_01.pdf
(2.28MB)
