Zeeman-induced gapless superconductivity with a partial Fermi surface

Journal Article · 19 March 2018 · Physical Review B

DOI: https://doi.org/10.1103/physrevb.97.115139 · OSTI ID:1505623

Yuan, Noah F. Q. ^[1]; Fu, Liang ^[2]

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1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Hong Kong Univ. of Science and Technology, Hong Kong (China); Massachusetts Institute of Technology
2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

We show that an in-plane magnetic field can drive two-dimensional spin-orbit-coupled systems under the superconducting proximity effect into a gapless phase where parts of the normal state Fermi surface are gapped, and the ungapped parts are reconstructed into a small Fermi surface of Bogoliubov quasiparticles at zero energy. As a result, the charge distribution, spin texture, and density of states of such a “partial Fermi surface” are discussed. Material platforms for its physical realization are proposed.

• Research Organization: Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
• Grant/Contract Number: SC0010526
• OSTI ID: 1505623
• Journal Information: Physical Review B, Journal Name: Physical Review B Journal Issue: 11 Vol. 97; ISSN 2469-9950; ISSN PRBMDO
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English