フルテキストURL PhysRevB_97_104511.pdf
著者 Kobayashi, Kaya| Ai, Yukio| Jeschke, Harald O.| Akimitsu, Jun|
抄録 We investigate superconductivity in In1-xSnxTe (x <= 0.5) synthesized at high pressures of up to 2 GPa and observe an enhancement of the superconducting transition temperature T-c for increasing tin concentration x. These compounds have not been accessible in rocksalt structure via conventional ambient pressure synthesis. While the lattice constant smoothly increases with x, T-c saturates around x = 0.4. Electronic structure calculations indicate that the Tc modulation is brought on by the change of the density of states in the vicinity of the Fermi energy [N(E-F)]. However, differences between the calculated N(E-F) and the observed electronic specific-heat coefficient indicate that the phonon dispersion plays an important role in the system and that the mechanism of superconductivity may not be the same in the entire doping range.
備考 This is an article published by American Physical Society
発行日 2018-03-26
出版物タイトル Physical Review B
97巻
出版者 American Physical Society
開始ページ 104511
ISSN 2469-9950
NCID AA11187113
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
論文のバージョン publisher
DOI 10.1103/PhysRevB.97.104511
Web of Sience KeyUT 000428238600008
関連URL isVersionOf https://doi.org/10.1103/PhysRevB.97.104511