A novel promising route for creating topological states and excitations is to combine superconductivity and the quantum Hall (QH) effect. Despite this potential, signatures of superconductivity in the quantum Hall regime remain scarce, and a superconducting current through a QH weak link has so far eluded experimental observation. Here we demonstrate the existence of a new type of supercurrent-carrying states in a QH region at magnetic fields as high as 2Tesla. The observation of supercurrent in the quantum Hall regime marks an important step in the quest for exotic topological excitations such as Majorana fermions and parafermions, which may find applications in fault-tolerant quantum computations.
@article{arxiv.1512.09083,
title = {Supercurrent in the quantum Hall regime},
author = {Francois Amet and Chung Ting Ke and Ivan V. Borzenets and Ying-Mei Wang and Keji Watanabe and Takashi Taniguchi and Russell S. Deacon and Michihisa Yamamoto and Yuriy Bomze and Seigo Tarucha and Gleb Finkelstein},
journal= {arXiv preprint arXiv:1512.09083},
year = {2016}
}