Zero-bias anomalies on Sr$_{0.88}$La$_{0.12}$CuO$_2$ thin films

L. Fruchter; F. Bouquet; Z. Z. Li

doi:10.1016/j.physc.2012.09.011

paper

Zero-bias anomalies on Sr $_{0.88}$ La $_{0.12}$ CuO $_{2}$ thin films

arXiv:1203.6746 · doi:10.1016/j.physc.2012.09.011

Abstract

High-impedance contacts made on the surface of Sr $_{0.88}$ La $_{0.12}$ CuO $_{2}$ superconducting thin films systematically display a zero-bias anomaly. We consider two-level systems (TLS) as the origin of this anomaly. We observe that the contribution of some TLS to the contact resistance is weakened by a magnetic field. We show that this could result from the increase of the TLS relaxation rate in the superconducting state, due to its ability to create pairs of quasiparticles out of the condensate, when located close to the surface of the film.

Zero-bias anomalies on Sr0.88​La0.12​CuO2​ thin films

Abstract

References in corpus (3)

Zero-bias anomalies on Sr $_{0.88}$ La $_{0.12}$ CuO $_{2}$ thin films