Odd-frequency superconductivity and Meissner effect in the doped topological insulator Bi$_2$Se$_3$
Superconductivity
2020-06-05 v2
Abstract
Doped BiSe is proposed to be a nematic superconductor originating from unusual inter-orbital pairing. We classify all induced superconducting pair correlations in BiSe and discover that intra-orbital odd-frequency pairing dominates over a significant range of frequencies. Moreover, we explore the contributions of even- and odd-frequency pairing to the Meissner effect, including separating intra- and inter-band processes in the response function. Contrary to expectations, and due to inter-band contributions, we find a diamagnetic odd-frequency Meissner effect.
Keywords
Cite
@article{arxiv.1909.02921,
title = {Odd-frequency superconductivity and Meissner effect in the doped topological insulator Bi$_2$Se$_3$},
author = {Johann Schmidt and Fariborz Parhizgar and Annica M. Black-Schaffer},
journal= {arXiv preprint arXiv:1909.02921},
year = {2020}
}