Bulk electronic structure of the antiferromagnetic superconducting phase in ErNi2B2C

Abstract

We have performed temperature (T) - dependent laser-photoemission spectroscopy of antiferromagnetic (AF) superconductor ErNi2B2C to study the electronic-structure evolution reflecting the interplay between antiferromagnetism and superconductivity. The spectra at the superconducting (SC) phase show a very broad spectral shape. T-dependent SC gap shows a sudden deviation from the BCS prediction just below TN. This observation can be well explained by the theoretical model and thus represents characteristic bulk electronic structure of the AF SC phase for the first time.

11 pages, 4 figures

References in corpus (5)

• Gap Function with Point Nodes in Borocarbide Superconductor YNi_2B_2C
• Nesting properties and anisotropy of the Fermi surface of LuNi${}_2$B${}_2$C
• Direct Observation of Nodal Quasiparticles in an Unconventional Superconductor: Field-angle Dependent Heat Capacity of YNi2B2C
• Local superconducting density of states of ErNi2B2C
• Effect of magnetic order on the superfluid response of single-crystal ErNi${}_2$B${}_2$C: A penetration depth study

Cited by in corpus (10)

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• Direct observation of a Fermi surface and superconducting gap in LuNi2B2C
• Kondo--attractive-Hubbard model for the ordering of local magnetic moments in superconductors
• Non-collinear order and gapless superconductivity in s-wave magnetic superconductors
• Observation of anisotropic effect of antiferromagnetic ordering on the superconducting gap in ErNi2B2C
• Pauli limited d-wave superconductors: Quantum breached pair phase and thermal transitions
• Superconductivity in an extended Hubbard model with attractive interaction
• The Superconducting Gap Behavior in the Antiferromagnetic Nickel-Borocarbide Compounds RNi2B2C (R=Dy, Ho, Er, Tm) Studied by Point-Contacts Spectroscopy
• Temperature tuned Fermi surface topology and segmentation in non-centrosymmetric superconductors