New exactly solvable model of strongly correlated electrons motivated by high- T sub c superconductivity

Journal Article · Mon May 11 00:00:00 EDT 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.2960· OSTI ID:7234590

Essler, F H.L.; Korepin, V E; Schoutens, K ^[1]

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1. Institute for Theoretical Physics, State University of New York at Stony Brook, Stony Brook, New York 11794-3840 (United States)

We present a new model describing strongly correlated electrons on a general {ital d}-dimensional lattice. It is an extended Hubbard model and it contains the {ital t}-{ital J} model as a special case. The model naturally describes local electron pairs, which can move coherently at arbitrary momentum. By using an {eta}-pairing mechanism we can construct eigenstates of the Hamiltonian with off-diagonal long-range order. In the attractive case the exact ground state is superconducting in any number of dimensions. On a one-dimensional lattice, the model is exactly solvable by Bethe ansatz.

• OSTI ID: 7234590
• Journal Information: Physical Review Letters; (United States), Vol. 68:19; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HIGH-TC SUPERCONDUCTORS
ELECTRONIC STRUCTURE
ANALYTICAL SOLUTION
DIMENSIONS
EIGENSTATES
ELECTRON-ELECTRON INTERACTIONS
FERMI GAS
GROUND STATES
HAMILTONIANS
MATHEMATICAL MODELS
PAIRING INTERACTIONS
SUPERCONDUCTIVITY
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY LEVELS
FLUIDS
GASES
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MATHEMATICAL OPERATORS
PARTICLE INTERACTIONS
PHYSICAL PROPERTIES
QUANTUM OPERATORS
SUPERCONDUCTORS
665411* - Basic Superconductivity Studies- (1992-)