Uniaxial Strain Orientation Dependence of Superconducting Transition Temperature (Tc) and Critical Superconducting Pressure (Pc) in 尾-(BDA-TTP)2I3
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- 作者：Koichi Kikuchi ; Takayuki Isono ; Masayuki Kojima ; Haruo Yoshimoto ; Takeshi Kodama ; Wataru Fujita ; Keiichi Yokogawa ; Harukazu Yoshino ; Keizo Murata ; Takayuki Kaihatsu ; Hiroki Akutsu ; Jun-ichi Yamada
- 刊名：Journal of the American Chemical Society
- 出版年：2011
- 出版时间：December 14, 2011
- 年：2011
- 卷：133
- 期：49
- 页码：19590-19593
- 全文大小：786K
- 年卷期：v.133,no.49(December 14, 2011)
- ISSN：1520-5126
文摘
Dependence of the superconducting transition temperature (Tc) and critial superconducting pressure (Pc) of the pressure-induced superconductor 尾-(BDA-TTP)2I3 [BDA-TTP = 2,5-bis(1,3-dithian-2-ylidene)-1,3,4,6-tetrathiapentalene] on the orientation of uniaxial strain has been investigated. On the basis of the overlap between the upper and lower bands in the energy dispersion curve, the pressure orientation is thought to change the half-filled band to the quarter-filled one. The observed variations in Tc and Pc are explained by considering the degree of application of the pressure and the degree of contribution of the effective electronic correlation at uniaxial strains with different orientations parallel to the conducting donor layer.