Thermal Diffusivity of the Mott Insulator Ca2RuO4 in a Non-equilibrium Steady State

• Kawasaki, Shuji

• Nakano, Akitoshi

• Taniguchi, Hiroki

• Cho, Hai Jun

• Ohta, Hiromichi

• Nakamura, Fumihiko

• Terasaki, Ichiro

Bibliographic Information

Other Title

• Thermal Diffusivity of the Mott Insulator Ca₂RuO₄ in a Non-equilibrium Steady State

Abstract

We have measured and analyzed the in-plane thermal diffusivity of the Mott insulator Ca2RuO4 around room temperature under external currents with an infrared camera as a contactless thermometer. We find that the thermal diffusivity decreases by 40% for an external current density of 14 A/cm^2. This large impact on lattice properties highly nontrivial in the sense that the external current primarily affects the electronic states. A possible explanation for this is discussed.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 90 (6), 063601-, 2021-06-15

  日本物理学会

Keywords

• General Physics and Astronomy

Details

• CRID: 1050853334087362048
• NII Article ID: 120007175357
• NII Book ID: AA00704814
• DOI: 10.7566/jpsj.90.063601
• ISSN: 13474073
• ISSN: 00319015
• HANDLE: 2237/0002001710
• NDL BIB ID: 031500359
• Web Site: https://nagoya.repo.nii.ac.jp/records/2001710
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031500359
• Web Site: https://journals.jps.jp/doi/pdf/10.7566/JPSJ.90.063601
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN