Possible excitonic phase of graphite in the quantum limit state

Kazuto Akiba, Atsushi Miyake, Hiroshi Yaguchi, Akira Matsuo, Koichi Kindo, Masashi Tokunaga

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The in-plane resistivity, Hall resistivity, and magnetization of graphite were investigated in pulsed magnetic fields applied along the c-axis. The Hall resistivity approaches zero at approximately 53 T where the in-plane and out-of-plane resistivities steeply decrease. The differential magnetization also shows an anomaly at around this field with an amplitude similar to that of de Haas-van Alphen oscillations at lower fields. This transition field appears insensitive to disorder, but reduces with hole doping. These results suggest the realization of the quantum limit states above 53 T. As a plausible explanation for the observed gapped out-of-plane conduction above 53 T, the emergence of the excitonic BCS-like state in graphite is proposed.

Original languageEnglish
Article number054709
Journaljournal of the physical society of japan
Volume84
Issue number5
DOIs
Publication statusPublished - May 15 2015
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Possible excitonic phase of graphite in the quantum limit state'. Together they form a unique fingerprint.

  • Cite this