Odd-parity topological superconductor with nematic order: Application to
Abstract
CuxBi2Se3 was recently proposed as a promising candidate for time-reversal-invariant topological superconductors. In this work, we argue that the unusual anisotropy of the Knight shift observed by Zheng and co-workers (unpublished), taken together with specific heat measurements, provides strong support for an unconventional odd-parity pairing in the two-dimensional Eu representation of the D3d crystal point group, which spontaneously breaks the threefold rotational symmetry of the crystal, leading to a subsidiary nematic order. We predict that the spin-orbit interaction associated with hexagonal warping plays a crucial role in pinning the two-component order parameter and makes the superconducting state generically fully gapped, leading to a topological superconductor. In conclusion, experimental signatures of the Eu pairing related to the nematic order are discussed.
- Authors:
-
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Publication Date:
- Research Org.:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1505788
- Alternate Identifier(s):
- OSTI ID: 1181411
- Grant/Contract Number:
- SC0010526
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B, Condensed Matter and Materials Physics
- Additional Journal Information:
- Journal Volume: 90; Journal Issue: 10; Journal ID: ISSN 1098-0121
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Fu, Liang. Odd-parity topological superconductor with nematic order: Application to CuxBi2Se3. United States: N. p., 2014.
Web. doi:10.1103/physrevb.90.100509.
Fu, Liang. Odd-parity topological superconductor with nematic order: Application to CuxBi2Se3. United States. https://doi.org/10.1103/physrevb.90.100509
Fu, Liang. Fri .
"Odd-parity topological superconductor with nematic order: Application to CuxBi2Se3". United States. https://doi.org/10.1103/physrevb.90.100509. https://www.osti.gov/servlets/purl/1505788.
@article{osti_1505788,
title = {Odd-parity topological superconductor with nematic order: Application to CuxBi2Se3},
author = {Fu, Liang},
abstractNote = {CuxBi2Se3 was recently proposed as a promising candidate for time-reversal-invariant topological superconductors. In this work, we argue that the unusual anisotropy of the Knight shift observed by Zheng and co-workers (unpublished), taken together with specific heat measurements, provides strong support for an unconventional odd-parity pairing in the two-dimensional Eu representation of the D3d crystal point group, which spontaneously breaks the threefold rotational symmetry of the crystal, leading to a subsidiary nematic order. We predict that the spin-orbit interaction associated with hexagonal warping plays a crucial role in pinning the two-component order parameter and makes the superconducting state generically fully gapped, leading to a topological superconductor. In conclusion, experimental signatures of the Eu pairing related to the nematic order are discussed.},
doi = {10.1103/physrevb.90.100509},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 10,
volume = 90,
place = {United States},
year = {Fri Sep 26 00:00:00 EDT 2014},
month = {Fri Sep 26 00:00:00 EDT 2014}
}
Web of Science
Figures / Tables:
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