Theoretical study of quasiparticle states near the surface of a quasi-one-dimensional organic superconductor(TMTSF)2PF6

2001/03/31 by Y. Tanuma, Yasunari Tanuma, K. Kuroki +4 · 1 citation
Materials Science · Physics and Astronomy · #Magnetism in coordination complexes #Organic and Molecular Conductors Research #Physics of Superconductivity and Magnetism #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.64.214510

5 pages, 2 figures

arxiv created 2001/04/04 · openalex publication_date 2001/11/08 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Quasiparticle states near the surface of a quasi-one-dimensional organic superconductor (TMTSF)₂PF₆ are studied based on an extended Hubbard model on a quasi-one-dimensional lattice at quarter filling. Three types of pairing symmetries (i) p wave, (ii) d wave, or (iii) ``f wave'' are assumed. The resulting surface density of states has characteristic features for each pairing symmetry: (i) a zero-energy peak (ZEP) in a U-shaped structure, (ii) a V-shaped structure without ZEP, and (iii) a ZEP in a V-shaped structure. From these results, we propose that the tunneling spectroscopy serves as a strong method to identify the pairing symmetry in (TMTSF)₂PF₆.

Citations

• Phenomenological theory of unconventional superconductivity

Cited by

• Theory of charge transport in diffusive normal metal/unconventional singlet superconductor contacts