TY - JOUR
T1 - Charge-density wave in Ca-intercalated bilayer graphene induced by commensurate lattice matching
AU - Shimizu, Ryota
AU - Sugawara, Katsuaki
AU - Kanetani, Kohei
AU - Iwaya, Katsuya
AU - Sato, Takafumi
AU - Takahashi, Takashi
AU - Hitosugi, Taro
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/4/7
Y1 - 2015/4/7
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevLett.114.146103
DO - 10.1103/PhysRevLett.114.146103
M3 - Article
AN - SCOPUS:84929629816
VL - 114
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 14
M1 - 146103
ER -