Energies of the staggered flux phase : a numerical study

Kinetic and magnetic energies of the staggered flux phase, with a fictitious flux of equal magnitude but opposite direction in adjacent square plaquettes, are calculated for the two-dimensional {ital t}-{ital J} model using the variational Monte Carlo method. They are compared to the energies of the...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1990-11, Vol.42 (13B), p.8720-8723
Main Authors: LEE, T. K, CHANG, L. N
Format: Article
Language:English
Subjects:
656100 - Condensed Matter Physics- Superconductivity
Band and itinerant models
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Condensed matter: electronic structure, electrical, magnetic, and optical properties
ENERGY LEVELS
Exact sciences and technology
FERMI GAS
FLUIDS
GASES
General theory and models of magnetic ordering
GROUND STATES
HIGH-TC SUPERCONDUCTORS
HOLES
MAGNETIC FLUX
Magnetic properties and materials
MATHEMATICAL MODELS
MONTE CARLO METHOD
Physics
SUPERCONDUCTORS
TWO-DIMENSIONAL CALCULATIONS
VARIATIONAL METHODS
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Summary:Kinetic and magnetic energies of the staggered flux phase, with a fictitious flux of equal magnitude but opposite direction in adjacent square plaquettes, are calculated for the two-dimensional {ital t}-{ital J} model using the variational Monte Carlo method. They are compared to the energies of the resonating-valence-bond state, the flux phase with half a quantum per plaquette, and the projected Fermi-liquid state. For about 10% hole concentration the staggered flux phase has the lowest energy of the nonsuperconducting states, but its energy is still higher than that of the superconducting {ital d}-wave state.
ISSN:0163-1829
1095-3795
DOI:10.1103/PhysRevB.42.8720