Orbital diamagnetic susceptibility in excitonic condensation phase

Koudai Sugimoto, Yukinori Ohta

研究成果: Article査読

16 被引用数 (Scopus)

抄録

We study the orbital diamagnetic susceptibility in excitonic condensation phase using the mean-field approximation for a two-band model defined on a square lattice. We find that, in semiconductors, the excitonic condensation acquires a finite diamagnetic susceptibility due to spontaneous hybridization between the valence and the conduction bands, whereas in semimetals, the diamagnetic susceptibility in the normal phase is suppressed by the excitonic condensation. We also study the orbital diamagnetic and Pauli paramagnetic susceptibilities of Ta2NiSe5 using a two-dimensional three-band model and find that the calculated temperature dependence of the magnetic susceptibility is in qualitative agreement with experiment.

本文言語English
論文番号085111
ジャーナルPhysical Review B
94
8
DOI
出版ステータスPublished - 2016 8月 8
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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