Local Superconducting Density of States of ErNi2B2C

M. Crespo, H. Suderow, S. Vieira, S. Bud’ko, and P. C. Canfield
Phys. Rev. Lett. 96, 027003 – Published 17 January 2006

Abstract

We present local tunneling microscopy and spectroscopy measurements at low temperatures in single crystalline samples of the magnetic superconductor ErNi2B2C. The electronic local density of states shows a striking departure from s-wave BCS theory with a finite value at the Fermi level, which amounts to half of the normal phase density of states.

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  • Received 5 September 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.027003

©2006 American Physical Society

Authors & Affiliations

M. Crespo1, H. Suderow1, S. Vieira1, S. Bud’ko2, and P. C. Canfield2

  • 1Laboratorio de Bajas Temperaturas, Departamento de Física de la Materia Condensada, Instituto de Ciencia de Materiales Nicolás Cabrera, Facultad de Ciencias, Universidad Autónoma de Madrid, 28049 Madrid, Spain
  • 2Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA

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Vol. 96, Iss. 2 — 20 January 2006

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