Gauge theory of high temperature superconductivity

Baskaran, G. (1989) Gauge theory of high temperature superconductivity Physica Scripta, 1989 (T27). pp. 53-59. ISSN 0031-8949

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Official URL: http://iopscience.iop.org/1402-4896/1989/T27/006?f...

Related URL: http://dx.doi.org/10.1088/0031-8949/1989/T27/006

Abstract

Superconductivity in the strongly correlated electronic systems described by the Hubbard model for slightly less than half-filled band is shown to arise from the condensation of charge + e holons which are bosons. The holon effective mass is found to be very close to that of the band electrons and they have a strong nearest neighbour repulsion induced by the spin fluctuations. They interact with an U(1) part of the collective SU(2) gauge field (named S-gauge field) of the spin system. This results in spontaneous symmetry breaking of the holon field and the appearance of the Anderson-Higgs phenomenon. The interesting possibility of the SU(2) gauge field-spinon coupled system retaining some gapless excitation spectrum inspite of the spontaneous symmetry breaking in the holon field is pointed out.

Item Type:Article
Source:Copyright of this article belongs to Royal Swedish Academy of Sciences.
ID Code:1887
Deposited On:08 Oct 2010 11:50
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