Anomalous spiked structures in ESR signals from the chiral helimagnet CrNb3 S6

Daichi Yoshizawa, Yuya Sawada, Yusuke Kousaka, Jun Ichiro Kishine, Yoshihiko Togawa, Masaki Mito, Katsuya Inoue, Jun Akimitsu, Takehito Nakano, Yasuo Nozue, Masayuki Hagiwara

Research output: Contribution to journalArticle

Abstract

We have performed X-band electron spin resonance (ESR) measurements on a single crystal of the metallic chiral helimagnet CrNb3S6 from 3.5 to 180 K and for the external magnetic fields Hext, up to 4 kOe, perpendicular to the c axis (the helical axis of CrNb3S6). This field-crystalline configuration is expected to provide the chiral soliton lattice (CSL) state in this system. The main resonance line can be fit with a Dysonian function above Tc=127K, but additional features in the spectra were observed below 105 K. Specifically, spiked anomalies superposed on the main signals were observed for magnetic fields between Hc1 and Hc2 that are the appearing and disappearing fields of the spiked anomalies, respectively. The resulting magnetic field vs temperature phase diagram possesses three regions, which are interpreted as different dynamical responses in the CSL phase. In addition, the values of Hc2 are close to those reported by the d2M/dH2 curve [Tsuruta, Phys. Rev. B 93, 104402 (2016)2469-995010.1103/PhysRevB.93.104402]. Furthermore, the field range between Hc1 and Hc2, where the spiked anomalies exist, depends on the field direction and shifts to higher fields when turning to the c axis, thereby providing additional evidence that these spiked anomalies must be related to the chiral soliton dynamics.

Original languageEnglish
Article number104413
JournalPhysical Review B
Volume100
Issue number10
DOIs
Publication statusPublished - Sep 9 2019

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Solitons
Paramagnetic resonance
electron paramagnetic resonance
anomalies
Magnetic fields
solitary waves
magnetic fields
Phase diagrams
superhigh frequencies
resonance lines
Single crystals
Crystalline materials
phase diagrams
shift
single crystals
curves
configurations
Temperature
temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Yoshizawa, D., Sawada, Y., Kousaka, Y., Kishine, J. I., Togawa, Y., Mito, M., ... Hagiwara, M. (2019). Anomalous spiked structures in ESR signals from the chiral helimagnet CrNb3 S6. Physical Review B, 100(10), [104413]. https://doi.org/10.1103/PhysRevB.100.104413

Anomalous spiked structures in ESR signals from the chiral helimagnet CrNb3 S6. / Yoshizawa, Daichi; Sawada, Yuya; Kousaka, Yusuke; Kishine, Jun Ichiro; Togawa, Yoshihiko; Mito, Masaki; Inoue, Katsuya; Akimitsu, Jun; Nakano, Takehito; Nozue, Yasuo; Hagiwara, Masayuki.

In: Physical Review B, Vol. 100, No. 10, 104413, 09.09.2019.

Research output: Contribution to journalArticle

Yoshizawa, D, Sawada, Y, Kousaka, Y, Kishine, JI, Togawa, Y, Mito, M, Inoue, K, Akimitsu, J, Nakano, T, Nozue, Y & Hagiwara, M 2019, 'Anomalous spiked structures in ESR signals from the chiral helimagnet CrNb3 S6', Physical Review B, vol. 100, no. 10, 104413. https://doi.org/10.1103/PhysRevB.100.104413
Yoshizawa D, Sawada Y, Kousaka Y, Kishine JI, Togawa Y, Mito M et al. Anomalous spiked structures in ESR signals from the chiral helimagnet CrNb3 S6. Physical Review B. 2019 Sep 9;100(10). 104413. https://doi.org/10.1103/PhysRevB.100.104413
Yoshizawa, Daichi ; Sawada, Yuya ; Kousaka, Yusuke ; Kishine, Jun Ichiro ; Togawa, Yoshihiko ; Mito, Masaki ; Inoue, Katsuya ; Akimitsu, Jun ; Nakano, Takehito ; Nozue, Yasuo ; Hagiwara, Masayuki. / Anomalous spiked structures in ESR signals from the chiral helimagnet CrNb3 S6. In: Physical Review B. 2019 ; Vol. 100, No. 10.
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