Quasiparticle Interference in a Superconducting State with a Fourfold Phase Change

• Authors: P. Pisarski , G. Harań
• Languages of publication: EN

Abstracts

EN

Quantum interference revealed in Bi_2Sr_2Ca Cu_2O_{8+δ} by Fourier transform scanning spectroscopy is primarily determined by maxima of the joint density of states which correspond to an octet of scattering wave vectors connecting points at the constant quasiparticle energy contours where the density of states is maximal. We consider a superconductor with a constant quasiparticle density of states where the interference is due to the fourfold change in the phase of the order parameter. Our results may be helpful in a discussion of the interference in a d-wave superconductor at the tunneling energy exceeding the gap magnitude.

Keywords

EN

74.20.Rp; 74.25.Jb; 74.62.Dh

Discipline

• 74.62.Dh: Effects of crystal defects, doping and substitution(for specific crystal defects, see 61.72.-y)
• 74.25.Jb: Electronic structure (photoemission, etc.)
• 74.20.Rp: Pairing symmetries (other than s-wave)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 5
• Pages: 791-794

Dates

published

2007-05

Contributors

author

P. Pisarski

• Institute of Physics, Technical University of Wrocław, Wybrzeżze Wyspiańskiego 27, 50-370 Wrocław, Poland

author

G. Harań

• Institute of Physics, Technical University of Wrocław, Wybrzeżze Wyspiańskiego 27, 50-370 Wrocław, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.111.791