On Dimer Pairing Mechanism of Superconductivity

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Abstract

Physical properties in a dimer pairing superconductor are examined. The pairing has a finite net momentum and breaks lattice translational symmetry as well as the gauge symmetry. The mean field equations for the dimerized t-J model and the spin-Peierls t-J model are solved numerically to discuss novel features of the dimer pairing mechanism. The dynamical spin susceptibility is calculated to discuss spin excitations in the superconducting state. The energy gap opens over the Fermi surface without nodes, while the Hebel-Slichter peak is absent in the NMR relaxation rate.

Original languageEnglish
Pages (from-to)423-427
Number of pages5
JournalJournal of the Physical Society of Japan
Volume61
Issue number2
DOIs
Publication statusPublished - 1992 Jan 1
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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