Charge-density wave with imperfect nesting and superconductivity

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.6387· OSTI ID:6837358

Ichimura, M; Fujita, M; Nakao, K ^[1]

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1. Institute of Materials Science, University of Tsukuba, Tsukuba, Ibaraki 305, Japan (JP)

We study the effect of the existence of the charge-density waves (CDW) on superconductivity within a mean-field approximation. When the band is slightly deformed to introduce the imperfect-nesting condition for the commensurate CDW, the metallic CDW states appear where a part of the Fermi surface is ungapped. We examine the phase diagram of the imperfect-nesting CDW states and the behavior of the superconducting critical temperature ({ital T}{sub {ital c}}) on it. We find that the presence of the CDW always drives the {ital T}{sub {ital c}} down.

• OSTI ID: 6837358
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:10; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BCS THEORY
BISMUTH COMPOUNDS
BISMUTH OXIDES
CHALCOGENIDES
CHARGE DENSITY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
ENERGY GAP
ENERGY LEVELS
FERMI LEVEL
LEAD COMPOUNDS
LEAD OXIDES
MEAN-FIELD THEORY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STOICHIOMETRY
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE