Bipolaronic superconductivity

Journal Article · Sat Aug 01 00:00:00 EDT 1981 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.24.1164· OSTI ID:6144879

Alexandrov, A; Ranninger, J

Superconducting properties of narrow-band electrons are examined in the strong-coupling limit. It is shown that bipolarons (localized spatially nonoverlapping Cooper pairs) formed by strong electron-phonon interaction have under certain conditions superconducting properties which are characteristic of superfluid charged Bose system. They represent an example of the ''molecular'' superconductivity proposed by Schafroth, Butler, and Blatt. The Meissner effect and the penetration depth of bipolaronic superconductor are examined. The relationship between Bardeen-Cooper-Schrieffer superconductors and bipolaronic ones is discussed.

• Research Organization: Groupe des Transitions de Phases, Centre National de la Recherche Scientifique, 38042 Grenoble Cedex, France
• OSTI ID: 6144879
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 24:3; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOSE-EINSTEIN GAS
COOPER PAIRS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
MEISSNER-OCHSENFELD EFFECT
PENETRATION DEPTH
PHYSICAL PROPERTIES
POLARONS
QUASI PARTICLES
SUPERCONDUCTIVITY