Ground-state properties and excitations of an integrable one-dimensional model with [delta]-function interaction involving several bands

Journal Article · Sun May 15 04:00:00 EDT 1994 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.356852· OSTI ID:6641968

Schlottmann, P ^[1]

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1. Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)

We consider an integrable model consisting of [ital n] parabolic bands of electrons of equal mass with a [delta]-function exchange interaction. The interaction is attractive or repulsive depending on whether the interacting particles are in a spin-singlet or triplet state. The structure of the Bethe ansatz and the classification of states is similar to that of the [ital n]-channel Kondo problem. The attractive interaction leads to Cooper-pair-like boundstates. Some ground-state properties and the excitation spectrum are discussed for the special situation of degenerate bands.

• OSTI ID: 6641968
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 75:10; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

665400* -- Quantum Physics Aspects of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOUND STATE
COLLECTIVE EXCITATIONS
COPPER COMPOUNDS
CUPRATES
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCHANGE INTERACTIONS
EXCITATION
GROUND STATES
HIGH-TC SUPERCONDUCTORS
INTERACTIONS
KONDO EFFECT
ONE-DIMENSIONAL CALCULATIONS
ORIENTATION
OXYGEN COMPOUNDS
PAIRING INTERACTIONS
SPIN ORIENTATION
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS