Charge-density wave in Ca-intercalated bilayer graphene induced by commensurate lattice matching

Ryota Shimizu, Katsuaki Sugawara, Kohei Kanetani, Katsuya Iwaya, Takafumi Sato, Takashi Takahashi, Taro Hitosugi

研究成果: Article査読

17 被引用数 (Scopus)

抄録

We report the emergence of a charge-density wave (CDW) in Ca-intercalated bilayer graphene (C6CaC6), the thinnest limit of superconducting C6Ca, observed by low-temperature, high-magnetic-field scanning tunneling microscopy or spectroscopy, and angle-resolved photoemission spectroscopy. While the possible superconductivity was not observed in epitaxially grown C6CaC6 on a SiC substrate, a CDW order different from that observed on the surface of bulk C6Ca was observed. It is inferred that the CDW state is induced by the potential modulation due to the commensurate lattice matching between the C6CaC6 film and the SiC substrate.

本文言語English
論文番号146103
ジャーナルPhysical review letters
114
14
DOI
出版ステータスPublished - 2015 4 7

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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