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

来源：

PHYSICAL REVIEW LETTERS | 1994年 / 72卷 / 23期

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

页码：3706 / 3709

页数：4

共 27 条

[21] TEMPERATURE-DEPENDENCE OF THE LATTICE-DYNAMICS OF RB3C60
WHITE, JW
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[22] 3-DIMENSIONAL FLUCTUATION CONDUCTIVITY IN SUPERCONDUCTING SINGLE-CRYSTAL K3C60 AND RB3C60
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ZETTL, A
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[24] ENHANCED ISOTOPE EFFECT IN C-13-RICH SUPERCONDUCTING MXC60 (M=K, RB) - SUPPORT FOR VIBRONIC PAIRING
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[J]. PHYSICAL REVIEW LETTERS, 1991, 67 (24) : 3452 - 3455
[26] MADELUNG ENERGIES, FORCE-CONSTANTS, AND LOW-ENERGY PHONON DENSITY OF STATES FOR K3C60
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BENNEMANN, KH
[J]. SOLID STATE COMMUNICATIONS, 1992, 82 (09) : 679 - 683
[27] COMPRESSIBILITY OF M3C60 FULLERENE SUPERCONDUCTORS - RELATION BETWEEN TC AND LATTICE-PARAMETER
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VAUGHAN, GBM
ZHU, Q
FISCHER, JE
HEINEY, PA
COUSTEL, N
MCCAULEY, JP
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