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Fermion-parity anomaly of the critical supercurrent in the quantum spin-Hall effect

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Fermion-parity anomaly of the critical supercurrent in the quantum spin-Hall effect. / Beenakker, C. W. J.; Pikulin, D I; Hyart, T et al.
In: Physical review letters, Vol. 110, No. 1, 017003, 02.01.2013.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Beenakker, CWJ, Pikulin, DI, Hyart, T, Schomerus, H & Dahlhaus, JP 2013, 'Fermion-parity anomaly of the critical supercurrent in the quantum spin-Hall effect', Physical review letters, vol. 110, no. 1, 017003. https://doi.org/10.1103/PhysRevLett.110.017003

APA

Beenakker, C. W. J., Pikulin, D. I., Hyart, T., Schomerus, H., & Dahlhaus, J. P. (2013). Fermion-parity anomaly of the critical supercurrent in the quantum spin-Hall effect. Physical review letters, 110(1), Article 017003. https://doi.org/10.1103/PhysRevLett.110.017003

Vancouver

Beenakker CWJ, Pikulin DI, Hyart T, Schomerus H, Dahlhaus JP. Fermion-parity anomaly of the critical supercurrent in the quantum spin-Hall effect. Physical review letters. 2013 Jan 2;110(1):017003. doi: 10.1103/PhysRevLett.110.017003

Author

Beenakker, C. W. J. ; Pikulin, D I ; Hyart, T et al. / Fermion-parity anomaly of the critical supercurrent in the quantum spin-Hall effect. In: Physical review letters. 2013 ; Vol. 110, No. 1.

Bibtex

@article{e7d6e462d42c40e5b77808b27d630c67,
title = "Fermion-parity anomaly of the critical supercurrent in the quantum spin-Hall effect",
abstract = "The helical edge state of a quantum spin-Hall insulator can carry a supercurrent in equilibrium between two superconducting electrodes (separation L, coherence length xi). We calculate the maximum (critical) current Ic that can flow without dissipation along a single edge, going beyond the short-junction restriction L << xi of earlier work, and find a dependence on the fermion parity of the ground state when L becomes larger than xi. Fermion-parity conservation doubles the critical current in the low-temperature, longjunction limit, while for a short junction Ic is the same with or without parity constraints. This provides a phase-insensitive, dc signature of the 4pi-periodic Josephson effect.",
author = "Beenakker, {C. W. J.} and Pikulin, {D I} and T Hyart and Henning Schomerus and Dahlhaus, {J P}",
year = "2013",
month = jan,
day = "2",
doi = "10.1103/PhysRevLett.110.017003",
language = "English",
volume = "110",
journal = "Physical review letters",
issn = "1079-7114",
publisher = "American Physical Society",
number = "1",

}

RIS

TY - JOUR

T1 - Fermion-parity anomaly of the critical supercurrent in the quantum spin-Hall effect

AU - Beenakker, C. W. J.

AU - Pikulin, D I

AU - Hyart, T

AU - Schomerus, Henning

AU - Dahlhaus, J P

PY - 2013/1/2

Y1 - 2013/1/2

N2 - The helical edge state of a quantum spin-Hall insulator can carry a supercurrent in equilibrium between two superconducting electrodes (separation L, coherence length xi). We calculate the maximum (critical) current Ic that can flow without dissipation along a single edge, going beyond the short-junction restriction L << xi of earlier work, and find a dependence on the fermion parity of the ground state when L becomes larger than xi. Fermion-parity conservation doubles the critical current in the low-temperature, longjunction limit, while for a short junction Ic is the same with or without parity constraints. This provides a phase-insensitive, dc signature of the 4pi-periodic Josephson effect.

AB - The helical edge state of a quantum spin-Hall insulator can carry a supercurrent in equilibrium between two superconducting electrodes (separation L, coherence length xi). We calculate the maximum (critical) current Ic that can flow without dissipation along a single edge, going beyond the short-junction restriction L << xi of earlier work, and find a dependence on the fermion parity of the ground state when L becomes larger than xi. Fermion-parity conservation doubles the critical current in the low-temperature, longjunction limit, while for a short junction Ic is the same with or without parity constraints. This provides a phase-insensitive, dc signature of the 4pi-periodic Josephson effect.

UR - http://www.scopus.com/inward/record.url?scp=84871776561&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.110.017003

DO - 10.1103/PhysRevLett.110.017003

M3 - Journal article

AN - SCOPUS:84871776561

VL - 110

JO - Physical review letters

JF - Physical review letters

SN - 1079-7114

IS - 1

M1 - 017003

ER -