Pressure and field dependence of superconductivity in Rb sub 3 C sub 60

Journal Article · Mon Feb 24 04:00:00 EST 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.1228· OSTI ID:7207046

Sparn, G; Thompson, J D ^[1]; Whetten, R L; Huang, S; Kaner, R B; Diederich, F ^[2]; Gruener, G; Holczer, K ^[3]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Department of Chemistry and Biochemistry and Solid State Science Center, University of California, Los Angeles, California 90024-1569 (United States)
3. Department of Physics and Solid State Science Center, University of California, Los Angeles, California 90024-1569 (United States)

Direct measurements of the pressure dependence of the superconducting transition temperature {ital T}{sub {ital c}} for single-phase Rb{sub 3}C{sub 60} provide for the first time substantial evidence that {ital T}{sub {ital c}} in {ital A}{sub 3}C{sub 60} compounds may be a universal function of the lattice constant (inter-C{sub 60} spacing). Determination of the lower ({ital H}{sub {ital c}1}) and upper ({ital H}{sub {ital c}2}) critical fields, and consequently the superconducting penetration depth and coherence length, is also reported. Compared to K{sub 3}C{sub 60}, the measured quantities are consistent with a 15% larger electronic-state density in Rb{sub 3}C{sub 60} arising from a greater inter-C{sub 60} spacing in this compound.

• OSTI ID: 7207046
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:8; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360607* -- Other Materials-- Superconducting Properties-- (1992-)
ALLOYS
CARBON
COHERENCE LENGTH
CRITICAL FIELD
CRYSTALS
DIMENSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
LATTICE PARAMETERS
LENGTH
MAGNETIC FIELDS
MOLECULAR CRYSTALS
NONMETALS
PENETRATION DEPTH
PHYSICAL PROPERTIES
PRESSURE EFFECTS
RUBIDIUM ADDITIONS
RUBIDIUM ALLOYS
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE