Anyonic Superconductivity in a Modified Large-U Hubbard Model

Asim Gangopadhyaya; Prasanta K. Panigrahi

doi:10.1103/PhysRevB.44.9749

Anyonic Superconductivity in a Modified Large-U Hubbard Model

Asim Gangopadhyaya, Prasanta K. Panigrahi

Department of Physics

University of Hyderabad

Research output: Contribution to journal › Article › peer-review

Abstract

A modified large- U Hubbard model at half filling is analyzed by a mean-field approach. Preserving a local U(1) symmetry of the action, the fluctuations about half filling are studied in the spirit of the commensurate-flux-phase condition. The fluctuations then contribute a Chern-Simons term to the tree-level Lagrangian with a coefficient appropriate to that of a half fermion. With the Coulomb repulsion term, we study the low-energy excitations of the model and show the existence of superconductivity in the presence of a four-Fermi interaction term.

Original language	American English
Journal	Physics: Faculty Publications and Other Works
Volume	44
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.44.9749
State	Published - Nov 1 1991

Keywords

superconductivity
hubbard model

Disciplines

Nuclear
Other Physics
Physics
Quantum Physics

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title = "Anyonic Superconductivity in a Modified Large-U Hubbard Model",

abstract = " A modified large- U Hubbard model at half filling is analyzed by a mean-field approach. Preserving a local U(1) symmetry of the action, the fluctuations about half filling are studied in the spirit of the commensurate-flux-phase condition. The fluctuations then contribute a Chern-Simons term to the tree-level Lagrangian with a coefficient appropriate to that of a half fermion. With the Coulomb repulsion term, we study the low-energy excitations of the model and show the existence of superconductivity in the presence of a four-Fermi interaction term.",

keywords = "superconductivity, hubbard model",

author = "Asim Gangopadhyaya and Panigrahi, {Prasanta K.}",

note = "Gangopadhyaya, A. and Sukhatme, U.P. (1991). Anyonic superconductivity in a modified large-U Hubbard model. Physical Review B, 44(17), 9749-52.",

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AU - Panigrahi, Prasanta K.

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N2 - A modified large- U Hubbard model at half filling is analyzed by a mean-field approach. Preserving a local U(1) symmetry of the action, the fluctuations about half filling are studied in the spirit of the commensurate-flux-phase condition. The fluctuations then contribute a Chern-Simons term to the tree-level Lagrangian with a coefficient appropriate to that of a half fermion. With the Coulomb repulsion term, we study the low-energy excitations of the model and show the existence of superconductivity in the presence of a four-Fermi interaction term.

AB - A modified large- U Hubbard model at half filling is analyzed by a mean-field approach. Preserving a local U(1) symmetry of the action, the fluctuations about half filling are studied in the spirit of the commensurate-flux-phase condition. The fluctuations then contribute a Chern-Simons term to the tree-level Lagrangian with a coefficient appropriate to that of a half fermion. With the Coulomb repulsion term, we study the low-energy excitations of the model and show the existence of superconductivity in the presence of a four-Fermi interaction term.

KW - superconductivity

KW - hubbard model

UR - https://ecommons.luc.edu/physics_facpubs/24

U2 - 10.1103/PhysRevB.44.9749

DO - 10.1103/PhysRevB.44.9749

M3 - Article

VL - 44

JO - Physics: Faculty Publications and Other Works

JF - Physics: Faculty Publications and Other Works

IS - 17

ER -

Anyonic Superconductivity in a Modified Large-U Hubbard Model

Abstract

Keywords

Disciplines

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