Three-dimensional superconductors with hybrid higher-order topology
Abstract
We consider three-dimensional superconductors in class DIII with a fourfold rotation axis and inversion symmetry. It is shown that such systems can exhibit higher-order topology with helical Majorana hinge modes. In the case of even-parity superconductors, we show that higher-order topological superconductors can be obtained by adding a small pairing with the appropriate C4 symmetry implementation to a topological insulator. We also show that a hybrid case is possible, where Majorana surface cones resulting from nontrivial strong topology coexist with helical hinge modes. Here, we propose a bulk invariant detecting this hybrid scenario, and numerically analyze a tight binding model exhibiting both Majorana cones and hinge modes.
- Authors:
-
- Princeton Univ., Princeton, NJ (United States)
- Princeton Univ., Princeton, NJ (United States); Freie Univ. Berlin, Berlin (Germany); Max Planck Inst. of Microstructure Physics, Halle (Germany)
- Univ. of California, Berkeley, CA (United States); Princeton Univ., Princeton, NJ (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1571984
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 99; Journal Issue: 12; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Bultinck, Nick, Bernevig, B. Andrei, and Zaletel, Michael P. Three-dimensional superconductors with hybrid higher-order topology. United States: N. p., 2019.
Web. doi:10.1103/physrevb.99.125149.
Bultinck, Nick, Bernevig, B. Andrei, & Zaletel, Michael P. Three-dimensional superconductors with hybrid higher-order topology. United States. https://doi.org/10.1103/physrevb.99.125149
Bultinck, Nick, Bernevig, B. Andrei, and Zaletel, Michael P. Tue .
"Three-dimensional superconductors with hybrid higher-order topology". United States. https://doi.org/10.1103/physrevb.99.125149. https://www.osti.gov/servlets/purl/1571984.
@article{osti_1571984,
title = {Three-dimensional superconductors with hybrid higher-order topology},
author = {Bultinck, Nick and Bernevig, B. Andrei and Zaletel, Michael P.},
abstractNote = {We consider three-dimensional superconductors in class DIII with a fourfold rotation axis and inversion symmetry. It is shown that such systems can exhibit higher-order topology with helical Majorana hinge modes. In the case of even-parity superconductors, we show that higher-order topological superconductors can be obtained by adding a small pairing with the appropriate C4 symmetry implementation to a topological insulator. We also show that a hybrid case is possible, where Majorana surface cones resulting from nontrivial strong topology coexist with helical hinge modes. Here, we propose a bulk invariant detecting this hybrid scenario, and numerically analyze a tight binding model exhibiting both Majorana cones and hinge modes.},
doi = {10.1103/physrevb.99.125149},
journal = {Physical Review. B},
number = 12,
volume = 99,
place = {United States},
year = {Tue Mar 26 00:00:00 EDT 2019},
month = {Tue Mar 26 00:00:00 EDT 2019}
}
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