OddParity Superconductivity near an Inversion Breaking Quantum Critical Point in One Dimension
Abstract
In this work, we study how an inversionbreaking quantum critical point affects the ground state of a onedimensional electronic liquid with repulsive interaction and spinorbit coupling. We find that regardless of the interaction strength, the critical fluctuations always lead to a gap in the electronic spin sector. The origin of the gap is a twoparticle backscattering process, which becomes relevant due to renormalization of the Luttinger parameter near the critical point. The resulting spingapped state is topological and can be considered as a onedimensional version of a spintriplet superconductor. Interestingly, in the case of a ferromagnetic critical point, the Luttinger parameter is renormalized in the opposite manner, such that the system remains nonsuperconducting.
 Authors:
 Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Department of Physics
 Publication Date:
 Research Org.:
 Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC22). Materials Sciences & Engineering Division
 OSTI Identifier:
 1424923
 Alternate Identifier(s):
 OSTI ID: 1361004
 Grant/Contract Number:
 SC0010526
 Resource Type:
 Journal Article: Accepted Manuscript
 Journal Name:
 Physical Review Letters
 Additional Journal Information:
 Journal Volume: 118; Journal Issue: 22; Journal ID: ISSN 00319007
 Publisher:
 American Physical Society (APS)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Quantum criticality; superconductivity; topological materials; topological superconductors; unconventional superconductors
Citation Formats
Ruhman, Jonathan, Kozii, Vladyslav, and Fu, Liang. OddParity Superconductivity near an Inversion Breaking Quantum Critical Point in One Dimension. United States: N. p., 2017.
Web. doi:10.1103/PhysRevLett.118.227001.
Ruhman, Jonathan, Kozii, Vladyslav, & Fu, Liang. OddParity Superconductivity near an Inversion Breaking Quantum Critical Point in One Dimension. United States. doi:10.1103/PhysRevLett.118.227001.
Ruhman, Jonathan, Kozii, Vladyslav, and Fu, Liang. Wed .
"OddParity Superconductivity near an Inversion Breaking Quantum Critical Point in One Dimension". United States.
doi:10.1103/PhysRevLett.118.227001.
@article{osti_1424923,
title = {OddParity Superconductivity near an Inversion Breaking Quantum Critical Point in One Dimension},
author = {Ruhman, Jonathan and Kozii, Vladyslav and Fu, Liang},
abstractNote = {In this work, we study how an inversionbreaking quantum critical point affects the ground state of a onedimensional electronic liquid with repulsive interaction and spinorbit coupling. We find that regardless of the interaction strength, the critical fluctuations always lead to a gap in the electronic spin sector. The origin of the gap is a twoparticle backscattering process, which becomes relevant due to renormalization of the Luttinger parameter near the critical point. The resulting spingapped state is topological and can be considered as a onedimensional version of a spintriplet superconductor. Interestingly, in the case of a ferromagnetic critical point, the Luttinger parameter is renormalized in the opposite manner, such that the system remains nonsuperconducting.},
doi = {10.1103/PhysRevLett.118.227001},
journal = {Physical Review Letters},
number = 22,
volume = 118,
place = {United States},
year = {Wed May 31 00:00:00 EDT 2017},
month = {Wed May 31 00:00:00 EDT 2017}
}
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