Josephson junctions defined in strong spin orbit semiconductors are highly interesting for the search for topological systems. However, next to topological edge states that emerge in a sufficient magnetic field, trivial edge states can also occur. We study the trivial edge states with superconducting quantum interference measurements on non-topological InAs Josephson junctions. We observe a SQUID pattern, an indication of superconducting edge transport. Also, a remarkable h/e SQUID signal is observed that, as we find, stems from crossed Andreev states.
@article{arxiv.1709.03727,
title = {$h/e$ superconducting quantum interference through trivial edge states in InAs},
author = {Folkert K. de Vries and Tom Timmerman and Viacheslav P. Ostroukh and Jasper van Veen and Arjan J. A. Beukman and Fanming Qu and Michael Wimmer and Binh-Minh Nguyen and Andrey A. Kiselev and Wei Yi and Marko Sokolich and Michael J. Manfra and Charles M. Marcus and Leo P. Kouwenhoven},
journal= {arXiv preprint arXiv:1709.03727},
year = {2018}
}