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THEORY OF CHAIN SUPERCONDUCTIVITY IN YBa₂Cu₃O_7-δ

FU-SUI LIU

Department of Physics, Beijing University, Beijing 100871, China

Department of Physics, Yunnan University, Kunming 650091, China

Corresponding author.

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and

WAN-FANG CHEN

CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China

University of Science and Technology for Staffs and Workers of Academy of Science of China, Beijing 100080, China

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https://doi.org/10.1142/S0217979205027718Cited by:0 (Source: Crossref)

Abstract

This paper extends the two-local-spin-mediated interaction (TLSMI) for the superconductivity in the CuO₂ plane of the high-T_c cuprates to the Cu-O chain superconductivity in YBa₂Cu₃O_7-δ (Y123), and sets up a theory for the chain superconductivity in Y123. We explain the observed 60 K chain superconductivity and predicts that the pseudogap should exist in the Cu-O chain of Y123.

Keywords:

PACS: 74.20.Mn, 74.20.Fg

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