Observation of orbital angular momentum in the chiral magnet ${\mathrm{CrNb}}_{3}{\mathrm{S}}_{6}$ by soft x-ray magnetic circular dichroism

Observation of orbital angular momentum in the chiral magnet ${CrNb}_{3} S_{6}$ by soft x-ray magnetic circular dichroism

M. Mito, H. Ohsumi, T. Shishidou, F. Kuroda, M. Weinert, K. Tsuruta, Y. Kotani, T. Nakamura, Y. Togawa, J. Kishine, Y. Kousaka, J. Akimitsu, and K. Inoue

Phys. Rev. B 99, 174439 – Published 29 May 2019

Abstract

The chiral magnet ${CrNb}_{3} S_{6}$ 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 $L_{2, 3}$ 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 $2 p$ core radial function to define the Cr local $3 d$ quantities. The distinct roles of the atomic SOC among the Cr $3 d$ and Nb $4 d$ states are discussed.

5 More

Received 9 April 2019

DOI:https://doi.org/10.1103/PhysRevB.99.174439

Physics Subject Headings (PhySH)

Dzyaloshinskii-Moriya interaction First-principles calculations Helicoidal magnetic texture Spin-orbit coupling Topological materials

X-ray magnetic circular dichroism

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

M. Mito^1,2,*, H. Ohsumi³, T. Shishidou^4,†, F. Kuroda⁵, M. Weinert⁴, K. Tsuruta⁶, Y. Kotani⁶, T. Nakamura⁶, Y. Togawa^2,7, J. Kishine^2,8, Y. Kousaka^2,7, J. Akimitsu⁹, and K. Inoue^2,10,11

¹Graduate School of Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan
²Center for Chiral Science, Hiroshima University, Higashihiroshima 739-8526, Japan
³RIKEN SPring-8 Center, Hyogo 679-5148, Japan
⁴Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201, USA
⁵Institute of Scientific and Industrial Research, Osaka University, Osaka 567-0047, Japan
⁶Japan Synchrotron Radiation Research Institute (JASRI), Hyogo 679-5198, Japan
⁷Graduate School of Engineering, Osaka Prefecture University, Sakai 599-8531, Japan
⁸Graduate School of Arts and Sciences, The Open University of Japan, Chiba 261-8586, Japan
⁹Research Institute for Interdisciplinary Science, Okayama University, Okayama 700-8530, Japan
¹⁰Graduate School of Science, Hiroshima University, Higashihiroshima 739-8526, Japan
¹¹Institute for Advanced Materials Research, Hiroshima University, Higashihiroshima 739-8526, Japan

^*mitoh@mns.kyutech.ac.jp
^†shishido@uwm.edu

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 99, Iss. 17 — 1 May 2019

Reuse & Permissions

Access Options

Article Available via CHORUS

Download Accepted Manuscript

Author publication services for translation and copyediting assistance advertisement

Physical Review B

covering condensed matter and materials physics

Observation of orbital angular momentum in the chiral magnet ${CrNb}_{3} S_{6}$ by soft x-ray magnetic circular dichroism

M. Mito, H. Ohsumi, T. Shishidou, F. Kuroda, M. Weinert, K. Tsuruta, Y. Kotani, T. Nakamura, Y. Togawa, J. Kishine, Y. Kousaka, J. Akimitsu, and K. Inoue

Phys. Rev. B 99, 174439 – Published 29 May 2019

Abstract

Physics Subject Headings (PhySH)

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Physical Review B

covering condensed matter and materials physics

Observation of orbital angular momentum in the chiral magnet CrNb3S6 by soft x-ray magnetic circular dichroism

M. Mito, H. Ohsumi, T. Shishidou, F. Kuroda, M. Weinert, K. Tsuruta, Y. Kotani, T. Nakamura, Y. Togawa, J. Kishine, Y. Kousaka, J. Akimitsu, and K. Inoue

Phys. Rev. B 99, 174439 – Published 29 May 2019

Abstract

Physics Subject Headings (PhySH)

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Observation of orbital angular momentum in the chiral magnet ${CrNb}_{3} S_{6}$ by soft x-ray magnetic circular dichroism