Superconductivity in CeCu/sub 2/Si/sub 2/ single crystals

Journal Article · Mon Feb 06 04:00:00 EST 1984 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.52.469· OSTI ID:6613109

Assmus, W; Herrmann, M; Rauchschwalbe, U; Riegel, S; Lieke, W; Spille, H; Horn, S; Weber, G; Steglich, F; Cordier, G

CeCu/sub 2/Si/sub 2/ single crystals prepared with an excess of Cu exhibit low residual resistivity rho/sub 0/, low susceptibility chi, small unit-cell volume V, and bulk ''heavy-fermion'' superconductivity below 0.65 K, while crystals grown from stoichiometric melt show higher rho/sub 0/ and chi, larger V, but no superconductivity. CeCu/sub 2/Si/sub 2/ behaves as an s-state superconductor with strongly temperature-dependent pair breaking and almost isotropic Fermi surface.

• Research Organization: Physikalisches Institut, Universitat Frankfurt, D-6000 Frankfurt am Main, West Germany
• OSTI ID: 6613109
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 52:6; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CERIUM COMPOUNDS
CERIUM SILICIDES
COOPER PAIRS
COPPER COMPOUNDS
COPPER SILICIDES
CRITICAL FIELD
CRYSTALS
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY LEVELS
EXPERIMENTAL DATA
FERMI LEVEL
INFORMATION
LOW TEMPERATURE
MAGNETIC FIELDS
MONOCRYSTALS
NUMERICAL DATA
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SILICIDES
SILICON COMPOUNDS
SPECIFIC HEAT
STOICHIOMETRY
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE