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タイトル: Possible Excitonic Phase of Graphite in the Quantum Limit State
著者: Akiba, Kazuto
Miyake, Atsushi
Yaguchi, Hiroshi
Matsuo, Akira
Kindo, Koichi
Tokunaga, Masashi
発行日: 2015年4月24日
出版者: The Physical Society of Japan
掲載誌情報: Kazuto Akiba, Atsushi Miyake, Hiroshi Yaguchi, Akira Matsuo, Koichi Kindo, and Masashi Tokunaga, "Possible Excitonic Phase of Graphite in the Quantum Limit State", Journal of the Physical Society of Japan 84 (2015) 054709, doi:10.7566/JPSJ.84.054709.
関連URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/possible-excitonic-bcs-like-state-in-the-quantum-limit-state.html
抄録: 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.
内容記述: UTokyo Research掲載「量子極限状態における励起子のBCS的状態の可能性」 URI: http://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/possible-excitonic-bcs-like-state-in-the-quantum-limit-state.html
UTokyo Research "Possible excitonic BCS-like state in the quantum limit state" URI: http://www.u-tokyo.ac.jp/en/utokyo-research/research-news/possible-excitonic-bcs-like-state-in-the-quantum-limit-state.html
URI: http://hdl.handle.net/2261/56964
ISSN: 1347-4073 (online)
出現カテゴリ:014 自然科学
1387410 学術雑誌論文


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