Experimental search for the origin of low-energy modes in topological materials
Superconductivity
2019-11-13 v3
Abstract
Point-contact spectroscopy of several non-superconducting topological materials reveals a low temperature phase transition that is characterized by a Bardeen-Cooper-Schrieffer-type of criticality. We find such a behavior of differential conductance for topological surfaces of non-magnetic and magnetic PbSnMnTe. We examine a possible contribution from superconducting nanoparticles, and show to what extent our data are consistent with Brzezicki's et al. theory [arXiv:1812.02168], assigning the observations to a collective state adjacent to atomic steps at topological surfaces.
Keywords
Cite
@article{arxiv.1709.04000,
title = {Experimental search for the origin of low-energy modes in topological materials},
author = {G. P. Mazur and K. Dybko and A. Szczerbakow and J. Z. Domagala and A. Kazakov and M. Zgirski and E. Lusakowska and S. Kret and J. Korczak and T. Story and M. Sawicki and T. Dietl},
journal= {arXiv preprint arXiv:1709.04000},
year = {2019}
}
Comments
15 pages, 27 figures (with Supplemental Material)