Magnetic Resonance in the Chiral Helimagnet CrNb3S6

Daichi Yoshizawa, Jun Ichiro Kishine, Yusuke Kousaka, Yoshihiko Togawa, Masaki Mito, Jun Akimitsu, Katsuya Inoue, Masayuki Hagiwara

Research output: Contribution to journalConference articlepeer-review

12 Citations (Scopus)

Abstract

Recently, magnetic substances with chirality, namely the handedness of the magnetic structure, have attracted considerable attention because of the anomalous phenomena which appear in magnetic fields. CrNb3S6 is one of the chiral magnets formed by exchange and Dzyaloshinsky-Moriya (DM) interactions. Electron spin resonance (ESR) measurements of CrNb3S6 in magnetic fields parallel to the c-axis (helical axis) have been performed to evaluate the exchange and the DM constants that determine the helical structure. Fitting the ESR data to a calculated mode based on a spin wave theory yields values for the ferromagnetic inter-plane exchange constant J/kB = 16.2 K, the DM constant D/kB = 1.29 K, and the single-ion anisotropy constant. From the Curie-Weiss temperature θCW ∼ 145 K, large intra-plane ferromagnetic exchange interactions are suggested.

Original languageEnglish
Pages (from-to)926-931
Number of pages6
JournalPhysics Procedia
Volume75
DOIs
Publication statusPublished - 2015
Externally publishedYes
Event20th International Conference on Magnetism, ICM 2015 - Barcelona, Spain
Duration: Jul 5 2015Jul 10 2015

Keywords

  • Chiral magnet
  • Dzyaloshinsky-Moriya interaction
  • Electron spin resonance
  • exchange interaction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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