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Rubidium isotope effect in superconducting Rb[sub 3]C[sub 60]

Journal Article · · Physical Review Letters; (United States)
; ; ;  [1]
  1. Department of Physics, University of California at Berkeley, Berkeley, California 94720 (United States) Materials Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720 (United States)
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We have measured the resistive supercondeucting transition temperature in C[sub 60] single crystals intercalated with isotopically pure [sup 87]Rb and [sup 85]Rb and with natural abundance rubidium. We obtain a rubidium isotope effect exponent of [alpha][sub Rb]=[minus]0.028[plus minus]0.036, a result which implies that the Rb-C[sub 60] optic phonons play at most a minor role in the pairing mechanism of Rb[sub 3]C[sub 60].

DOE Contract Number:
AC03-76SF00098
OSTI ID:
7236408
Journal Information:
Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:23; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665411 -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALI METAL COMPOUNDS
ALKALI METAL ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBIDES
CARBON
CARBON COMPOUNDS
COUPLING
CRYSTALS
ELECTRON-PHONON COUPLING
ELEMENTS
FREQUENCY DEPENDENCE
FULLERENES
INTERACTIONS
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPE EFFECTS
ISOTOPES
MONOCRYSTALS
NANOSEC LIVING RADIOISOTOPES
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
OPTICAL MODES
OSCILLATION MODES
PAIRING INTERACTIONS
PHYSICAL PROPERTIES
RADIOISOTOPES
RUBIDIUM 85
RUBIDIUM 87
RUBIDIUM CARBIDES
RUBIDIUM COMPOUNDS
RUBIDIUM ISOTOPES
STABLE ISOTOPES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
YEARS LIVING RADIOISOTOPES