Integrable two-band model with attractive and repulsive interactions
Journal Article
·
· Physical Review Letters; (United States)
- Department of Physics and MARTECH, Florida State University, Tallahassee, Florida 32306 (United States)
The exact solution via Bethe's ansatz to a model consisting of two parabolic bands of electrons with local attractive and repulsive interactions is presented. Some low-temperature properties of this model are discussed as a function of the interaction strength, a magnetic field, and the crystal-field splitting between the bands. The attractive interaction leads to Cooper-pair-like bound states and a threshold magnetic field is required to overcome the binding energy. The low-{ital T} specific heat is proportional to {ital T}, except at critical points where {ital C}{proportional to}{ital T}{sup 1/2}.
- DOE Contract Number:
- FG05-91ER45443
- OSTI ID:
- 7113395
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 68:12; ISSN PRLTA; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
Similar Records
Two-band model with attractive and repulsive interactions in one dimension: Ground state, excitations, and thermodynamics
Ground-state properties and excitations of an integrable one-dimensional model with [delta]-function interaction involving several bands
Ground state and excitations of a one-dimensional two-band supersymmetric t - J model with crystalline field splitting
Journal Article
·
Mon Feb 28 23:00:00 EST 1994
· Physical Review, B: Condensed Matter
·
OSTI ID:142595
Ground-state properties and excitations of an integrable one-dimensional model with [delta]-function interaction involving several bands
Journal Article
·
Sun May 15 00:00:00 EDT 1994
· Journal of Applied Physics; (United States)
·
OSTI ID:6641968
Ground state and excitations of a one-dimensional two-band supersymmetric t - J model with crystalline field splitting
Journal Article
·
Mon Oct 19 00:00:00 EDT 1992
· Physical Review Letters; (United States)
·
OSTI ID:7196910
Related Subjects
665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COOPER PAIRS
COUPLING
CRYSTAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-ELECTRON COUPLING
HAMILTONIANS
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MATHEMATICAL OPERATORS
ONE-DIMENSIONAL CALCULATIONS
PHYSICAL PROPERTIES
QUANTUM OPERATORS
SPECIFIC HEAT
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COOPER PAIRS
COUPLING
CRYSTAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-ELECTRON COUPLING
HAMILTONIANS
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MATHEMATICAL OPERATORS
ONE-DIMENSIONAL CALCULATIONS
PHYSICAL PROPERTIES
QUANTUM OPERATORS
SPECIFIC HEAT
SUPERCONDUCTIVITY
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES