Spin Seebeck effect in the layered ferromagnetic insulators CrSiTe3 and CrGeTe3

Naohiro Ito, Takashi Kikkawa, Joseph Barker, Daichi Hirobe, Yuki Shiomi, Eiji Saitoh

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

We have studied the longitudinal spin Seebeck effect (LSSE) in the layered ferromagnetic insulators CrSiTe3 and CrGeTe3 covered by Pt films in the measurement configuration where spin current traverses the ferromagnetic Cr layers. The LSSE response is clearly observed in the ferromagnetic phase and, in contrast to a standard LSSE magnet Y3Fe5O12, persists above the critical temperatures in both CrSiTe3/Pt and CrGeTe3/Pt samples. With the help of a numerical calculation, we attribute the LSSE signals observed in the paramagnetic regime to exchange-dominated interlayer transport of in-plane paramagnetic moments reinforced by short-range ferromagnetic correlations and strong Zeeman effects.

Original languageEnglish
Article number060402
JournalPhysical Review B
Volume100
Issue number6
DOIs
Publication statusPublished - 2019 Aug 5

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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