Topological phase transition induced by Zeeman field in topological insulator/superconductor heterostructure
Mesoscale and Nanoscale Physics
2016-02-01 v1
Abstract
We investigate a topological insulator -- superconductor heterostructure with an Abrikosov vortex in a magnetic field. Large Zeeman field causes a topological phase transition in the system. We found that a Majorana fermion exists at the vortex core in the phase with zero first Chern number and does not exist at the phase with non-trivial first Chern number. This result is supported by the index theorem. This system provides an example in which a Majorana fermion emerges in a system with zero first Chern number.
Keywords
Cite
@article{arxiv.1601.08035,
title = {Topological phase transition induced by Zeeman field in topological insulator/superconductor heterostructure},
author = {R. S. Akzyanov and A. D. Zabolotskiy},
journal= {arXiv preprint arXiv:1601.08035},
year = {2016}
}