Quasiparticle Interference as a Direct Experimental Probe of Bulk Odd-Frequency Superconducting Pairing

被引：3

作者：

Chakraborty, Debmalya ^{[1
]}

Black-Schaffer, Annica M. ^{[1
]}

机构：

[1] Uppsala Univ, Dept Phys & Astron, Box 516, S-75120 Uppsala, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 24期

基金：

欧洲研究理事会; 瑞典研究理事会;

关键词：

REALIZATION; STATES;

D O I：

10.1103/PhysRevLett.129.247001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show that quasiparticle interference (QPI) due to omnipresent weak impurities and probed by Fourier transform scanning tunneling microscopy and spectroscopy acts as a direct experimental probe of bulk odd -frequency superconducting pairing. Taking the example of a conventional s-wave superconductor under applied magnetic field, we show that the nature of the QPI peaks can only be characterized by including the odd-frequency pairing correlations generated in this system. In particular, we identify that the defining feature of odd-frequency pairing gives rise to a bias asymmetry in the QPI, present generically in materials with odd-frequency pairing irrespective of its origin.

引用

页数：6