奇异频率超导有序的光谱证据。

Spectroscopic evidence of odd frequency superconducting order.

机构信息

Department of Materials Science, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom.

Department of Physics, NTNU, Norwegian University, N-7491 Trondheim, Norway.

出版信息

Sci Rep. 2017 Jan 20;7:40604. doi: 10.1038/srep40604.

DOI:10.1038/srep40604

PMID:28106102

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5247762/

Abstract

Spin filter superconducting S/I/N tunnel junctions (NbN/GdN/TiN) show a robust and pronounced Zero Bias Conductance Peak (ZBCP) at low temperatures, the magnitude of which is several times the normal state conductance of the junction. Such a conductance anomaly is representative of unconventional superconductivity and is interpreted as a direct signature of an odd frequency superconducting order.

摘要

自旋过滤超导 S/I/N 隧道结（NbN/GdN/TiN）在低温下表现出稳健且显著的零偏置电导峰（ZBCP），其幅度是结的正常态电导的数倍。这种电导异常是非常规超导的代表性特征，并被解释为奇数频率超导序的直接特征。