Hole-Doped Cuprate Panorama and the Second Neighbor Hopping

• Authors: P. Goswami
• Languages of publication: 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.

Keywords

EN

74.72.Gh; 74.20.-z

Discipline

• 74.20.-z: Theories and models of superconducting state
• 74.72.Gh: Hole-doped

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 124
• Issue: 1
• Pages: 90-93

Dates

published

2013-07

received

2012-08-06

(unknown)

2013-03-13

Contributors

author

P. Goswami

• Deshbandhu College, University of Delhi, Kalkaji, New Delhi-110019, India

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Identifiers

DOI

10.12693/APhysPolA.124.90