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arXiv 0904.3138cond-mat.supr-con
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CaC6在15 GPa以上压力下的超导电性和结构研究

Studies of superconductivity and structure for CaC6 to pressures above 15 GPa

M. Debessai, J. J. Hamlin, J. S. Schilling, Y. Meng, D. Rosenmann, D. G. Hinks, H. Claus

摘要:

CaC 6的超导转变温度Tc的依赖性已被确定为流体静压力的函数,在两个氦载气体和金刚石对顶砧细胞,分别为0.6和32 GPa。在以+0.39(1)K/GPa的速率初始增加之后,Tc在10 GPa时突然从15 K下降到4 K。同步加速器X射线测量到15 GPa点的结构过渡到10 GPa附近的一个菱面体到一个更高的对称相。

英文摘要:

The dependence of the superconducting transition temperature Tc of CaC6 has been determined as a function of hydrostatic pressure in both helium-loaded gas and diamond-anvil cells to 0.6 and 32 GPa, respectively. Following an initial increase at the rate +0.39(1) K/GPa, Tc drops abruptly from 15 K to 4 K at 10 GPa. Synchrotron x-ray measurements to 15 GPa point to a structural transition near 10 GPa from a rhombohedral to a higher symmetry phase.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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