RUBIDIUM ISOTOPE EFFECT IN SUPERCONDUCTING RB3C60

被引:45
作者
BURK, B [1 ]
CRESPI, VH [1 ]
ZETTL, A [1 ]
COHEN, ML [1 ]
机构
[1] LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720
关键词
D O I
10.1103/PhysRevLett.72.3706
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have measured the resistive superconducting transition temperature in C60 single crystals intercalated with isotopically pure Rb-87 and Rb-85 and with natural abundance rubidium. We obtain a rubidium isotope effect exponent of alpha(Rb) = -0.028 +/- 0.036, a result which implies that the Rb-C60 optic phonons play at most a minor role in the pairing mechanism of Rb3C60.
引用
收藏
页码:3706 / 3709
页数:4
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