TY - JOUR
T1 - Superconductivity in the Graphite Intercalation Compound BaC6
AU - Heguri, Satoshi
AU - Kawade, Naoya
AU - Fujisawa, Takumi
AU - Yamaguchi, Akira
AU - Sumiyama, Akihiko
AU - Tanigaki, Katsumi
AU - Kobayashi, Mototada
PY - 2015/6/15
Y1 - 2015/6/15
N2 - Among many two-dimensional (2D) high TC superconductors, graphite intercalation compounds (GICs) are the most famous intercalation family, which are classified as typical electron-phonon mediated superconductors. We show unambiguous experimental facts that BaC6, the superconductivity of which has been missing for many years so far among various alkaline earth metal (Ca, Sr, and Ba) intercalted GICs, exhibits superconductivity at TC = 65 mK. By adding this finding as the additional experimental point, a complete figure displaying the relationship between TC and interlayer distance (d) for GICs is now provided, and their possible superconducting mechanisms raised so far are revisited. The present study settles a long-running debate between theories and experiments on the superconductivity in the first stage GICs.
AB - Among many two-dimensional (2D) high TC superconductors, graphite intercalation compounds (GICs) are the most famous intercalation family, which are classified as typical electron-phonon mediated superconductors. We show unambiguous experimental facts that BaC6, the superconductivity of which has been missing for many years so far among various alkaline earth metal (Ca, Sr, and Ba) intercalted GICs, exhibits superconductivity at TC = 65 mK. By adding this finding as the additional experimental point, a complete figure displaying the relationship between TC and interlayer distance (d) for GICs is now provided, and their possible superconducting mechanisms raised so far are revisited. The present study settles a long-running debate between theories and experiments on the superconductivity in the first stage GICs.
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U2 - 10.1103/PhysRevLett.114.247201
DO - 10.1103/PhysRevLett.114.247201
M3 - Article
AN - SCOPUS:84934784364
VL - 114
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 24
M1 - 247201
ER -