Abstract
A hybrid setup consisting of a superconductivity-proximitized quantum spin Hall insulator and a quantum anomalous Hall (QAH) insulator is proposed for chiral injection of electrons into the Majorana bound state (MBS). An unexplored region of the phase space involving the Zeeman-field-induced boost of the helical edge state is then proposed for the detection of the MBS. Two-dimensional transport simulations of our proposed setup are compared with the corresponding setup in the absence of the QAH region, when moderate potential and magnetic disorder are included. The remarkable contrast between the two results demonstrates the possibility for an unprecedented immunity from disorder-induced masking of the MBS detection in our proposed setup.
| Original language | English |
|---|---|
| Article number | 045422 |
| Journal | Physical Review B |
| Volume | 106 |
| Issue number | 4 |
| DOIs | |
| State | Published - 15 Jul 2022 |
Bibliographical note
Publisher Copyright:© 2022 American Physical Society.
Funding
V.A. acknowledges support from IISER Kolkata in the form of a subsistence grant. A.M. would like to thank the Ministry of Education, India for financial support. S.J.D. acknowledges support from an Infosys grant. U.K. was supported by a fellowship from the Israel Science Foundation (ISF, Grant No. 993/19). S.D. would like to acknowledge the MATRICS Grant (MTR/ 2019/001 043) from the Science and Engineering Research Board (SERB) for funding. We acknowledge the central computing facility (DIRAC supercomputer) and the computational facility at the Department of Physics (KEPLER) at IISER Kolkata. S.D. and V.A. are grateful to Satyabrata Raj for his help with KEPLER cluster.
| Funders | Funder number |
|---|---|
| Science and Engineering Research Board | |
| Israel Science Foundation | MTR/ 2019/001 043, 993/19 |
| Ministry of Education, India | |
| Indian Institute of Science Education and Research Kolkata |