Surface-angle dependence of the tunneling spectroscopy in iron-based superconductors: sign-reversing s-wave scenarios

Abstract

We discuss the surface Andreev bound states in Fe-based superconductors with the use of an effective five-band model and investigate the surface-angle dependence of the tunneling spectroscopy by a quasiclassical approach for an isotropic and an anisotropic /pm s-wave gap superconductivity. We show that information on the normal state is important for the Andreev bound state and its peak positions do not depend on the gap amplitude anisotropy.

2 pages, 2 figures; To be published in Proc. of M2S-IX 2009, Tokyo (Physica C)

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Cited by in corpus (3)

• Time-reversal symmetry breaking state near the surface of $s_{\pm }$-superconductor
• Topological surface states and Andreev bound states in superconducting iron pnictides
• $a-b$ Plane Point Contact Spectroscopy measurements of optimally Cobalt doped Ba-122 iron-pnictide superconductors