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

Y. Tanuma; K. Kuroki; Y. Tanaka; S. Kashiwaya

doi:10.1103/PhysRevB.64.214510

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

Y. Tanuma, K. Kuroki, Y. Tanaka, S. Kashiwaya

DOI 10.1103/PhysRevB.64.214510 · Physical Review B

T1

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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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
(TMTSF)2PF6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
(TMTSF)2ClO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown