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2013 | 124 | 1 | 90-93
Article title

Hole-Doped Cuprate Panorama and the Second Neighbor Hopping

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EN
Abstracts
EN
We consider the coexistent id-density wave order, at the antiferromagnetic wave vector Q =(π,π), representing the pseudo-gap state, and d-wave superconductivity, driven by an assumed attractive interaction, within the BCS framework for the two-dimensional fermion system on a square lattice starting with a mean-field Hamiltonian involving the singlet id-density wave and the d-wave superconductivity pairings. The second-neighbor hopping, which is known to be important for cuprates and frustrates the kinetic energy of electrons, leads to the Fermi surface sheets being not connected by Q. The signature of the particle-hole asymmetry in the single-particle excitation spectrum of the pure id-density wave state is reflected in the coexisting id-density wave and d-wave superconductivity states, though the latter is characterized by the Bogoliubov quasi-particle bands - a characteristic feature of superconducting state. Quite significantly, we find that the coexistence is possible due to the non-nesting property.
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EN
Publisher

Year
Volume
124
Issue
1
Pages
90-93
Physical description
Dates
published
2013-07
received
2012-08-06
(unknown)
2013-03-13
Contributors
author
  • Deshbandhu College, University of Delhi, Kalkaji, New Delhi-110019, India
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv124n118kz
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