Energy and critical ionic-bond parameter of a 3D large-radius bipolaron

Journal Article · Sat May 15 00:00:00 EDT 2010 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776110050122· OSTI ID:21443525

A theory of a strong-coupling large-radius bipolaron has been developed. The possibility of the formation of 3D bipolarons in high-temperature superconductors is discussed. For the bipolaron energy, the lowest variational estimate has been obtained at {alpha} > 8, where {alpha} is the electron-phonon coupling constant. The critical ionic-bond parameter {eta}{sub c} = {epsilon}{sub {infinity}/{epsilon}0}, where {epsilon}{sub {infinity}} and {epsilon}{sub 0} are the high-frequency and static dielectric constants, has been found to be {eta}{sub c} = 0.2496.

• OSTI ID: 21443525
• Journal Information: Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 5 Vol. 110; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CALCULATION METHODS
CHEMICAL BONDS
COUPLING
COUPLING CONSTANTS
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
HIGH-TC SUPERCONDUCTORS
PERMITTIVITY
PHYSICAL PROPERTIES
POLARONS
QUASI PARTICLES
SUPERCONDUCTORS
TYPE-II SUPERCONDUCTORS
VARIATIONAL METHODS