Observation of orbital angular momentum in the chiral magnet CrNb3 S6 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, Jun Akimitsu, K. Inoue

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Article number174439
JournalPhysical Review B
Volume99
Issue number17
DOIs
Publication statusPublished - May 29 2019

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Angular momentum
Dichroism
dichroism
Magnets
Orbits
magnets
angular momentum
X rays
orbitals
Magnetization
orbits
Circular dichroism spectroscopy
x rays
Magnetic moments
moments
Transport properties
magnetization
Electronic structure
Magnetic properties
sum rules

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Mito, M., Ohsumi, H., Shishidou, T., Kuroda, F., Weinert, M., Tsuruta, K., ... Inoue, K. (2019). Observation of orbital angular momentum in the chiral magnet CrNb3 S6 by soft x-ray magnetic circular dichroism. Physical Review B, 99(17), [174439]. https://doi.org/10.1103/PhysRevB.99.174439

Observation of orbital angular momentum in the chiral magnet CrNb3 S6 by soft x-ray magnetic circular dichroism. / Mito, M.; Ohsumi, H.; Shishidou, T.; Kuroda, F.; Weinert, M.; Tsuruta, K.; Kotani, Y.; Nakamura, T.; Togawa, Y.; Kishine, J.; Kousaka, Y.; Akimitsu, Jun; Inoue, K.

In: Physical Review B, Vol. 99, No. 17, 174439, 29.05.2019.

Research output: Contribution to journalArticle

Mito, M, Ohsumi, H, Shishidou, T, Kuroda, F, Weinert, M, Tsuruta, K, Kotani, Y, Nakamura, T, Togawa, Y, Kishine, J, Kousaka, Y, Akimitsu, J & Inoue, K 2019, 'Observation of orbital angular momentum in the chiral magnet CrNb3 S6 by soft x-ray magnetic circular dichroism', Physical Review B, vol. 99, no. 17, 174439. https://doi.org/10.1103/PhysRevB.99.174439
Mito, M. ; Ohsumi, H. ; Shishidou, T. ; Kuroda, F. ; Weinert, M. ; Tsuruta, K. ; Kotani, Y. ; Nakamura, T. ; Togawa, Y. ; Kishine, J. ; Kousaka, Y. ; Akimitsu, Jun ; Inoue, K. / Observation of orbital angular momentum in the chiral magnet CrNb3 S6 by soft x-ray magnetic circular dichroism. In: Physical Review B. 2019 ; Vol. 99, No. 17.
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