Superconducting Fluctuations in a Tight Binding Bandstructure

2015/03/16 by L. Coffey, Coffey, L.
Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Superconductivity (cond-mat.supr-con)

paper · pdf · doi:10.48550/arxiv.1503.04747

openalex publication_date 2015/03/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Normal state superconducting fluctuations are calculated for the case of a tight binding bandstructure. The resulting electronic self energy and spectral weight are anisotropic on the Fermi surface. For certain values of the chemical potential μ, the onset of a pseudogap is present in the spectral weight for Fermi surface momenta near the (pi,0) point in the 1st Brillouin Zone, and absent for momenta closer to the zone diagonal. The pseudogap in the normal state of high temperature superconductors shows similar behavior.

Related

• Numerical Study of Pseudo-gap Anisotropy for a Tight Binding Band
• Shadow bands, gap and pseudogaps in high-T_c superconductors
• Opening of pseudogaps due to superconducting critical fluctuations in quasi-two dimensions
• Pseudogap in electron-doped cuprates as a thermal precursor to magnetism
• Spectral Functions and Pseudogap in Models of Strongly Correlated Electrons