Non-equilibrium Steady State in the Mott Insulator Ca2RuO4

• Terasaki, Ichiro

• Sano, Isuzu

• Toda, Kosuke

• Kawasaki, Shuji

• Nakano, Akitoshi

• Taniguchi, Hiroki

• Cho, Hai Jun

• Ohta, Hiromichi

• Nakamura, Fumihiko

Bibliographic Information

Other Title

• Non-equilibrium Steady State in the Mott Insulator Ca₂RuO₄

Abstract

We have measured and analyzed the nonlinear conduction of the Mott insulator Ca2RuO4 with square wave and square-pulse currents around room temperature with an infrared camera as a contactless thermometer. By combining the thermal diffusivity measurements, we have found that the temperature increase due to self heating is explained by the conduction of the Joule heat through the sample to the heat bath. We further find a time scale of the nonlinear conduction to be 20 ms, which is consistent with thermal relaxation time of the sample. We propose that a steady dissipation of external energy flow characterizes the non-equilibrium steady state of Ca2RuO4, rather than a steady current flow.

Journal

• Journal of the Physical Society of Japan

  Journal of the Physical Society of Japan 89 (9), 093707-, 2020-09-15

  日本物理学会

Keywords

• General Physics and Astronomy

Details

• CRID: 1050008613567331712
• NII Article ID: 120006941020
• NII Book ID: AA00704814
• DOI: 10.7566/jpsj.89.093707
• ISSN: 13474073
• ISSN: 00319015
• HANDLE: 2237/00033218
• NDL BIB ID: 030632582
• Web Site: https://nagoya.repo.nii.ac.jp/records/31036
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I030632582
• Web Site: https://journals.jps.jp/doi/pdf/10.7566/JPSJ.89.093707
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN