Anisotropic superconductivity in noncentrosymmetric BiPd

L. Jiao; J. L. Zhang; Y. Chen; Z. F. Weng; Y. M. Shao; J. Y. Feng; X. Lu; B. Joshi; A. Thamizhavel; S. Ramakrishnan; H. Q. Yuan

doi:10.1103/PhysRevB.89.060507

Anisotropic superconductivity in noncentrosymmetric BiPd

L. Jiao, J. L. Zhang, Y. Chen, Z. F. Weng, Y. M. Shao, J. Y. Feng, X. Lu, B. Joshi, A. Thamizhavel, S. Ramakrishnan, H. Q. Yuan

Physics

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34 Scopus citations

Abstract

We report measurements of London penetration depth λ(T) for the noncentrosymmetric superconductor BiPd by using a tunnel diode oscillator. Pronounced anisotropic behavior is observed in the low-temperature penetration depth; the in-plane penetration depth λac(T) follows an exponential decrease, but the interplane penetration depth λb(T) shows power-law-type behavior. The superfluid density ρs(T), converted from the penetration depth λ(T), is best fitted by an anisotropic two-band BCS model. We argue that such a complex order parameter is attributed to the admixture of spin-singlet and spin-triplet pairing states as a result of antisymmetric spin-orbit coupling in BiPd.

Original language	English (US)
Article number	060507
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	89
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.89.060507
State	Published - Feb 28 2014

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.89.060507

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title = "Anisotropic superconductivity in noncentrosymmetric BiPd",

abstract = "We report measurements of London penetration depth λ(T) for the noncentrosymmetric superconductor BiPd by using a tunnel diode oscillator. Pronounced anisotropic behavior is observed in the low-temperature penetration depth; the in-plane penetration depth λac(T) follows an exponential decrease, but the interplane penetration depth λb(T) shows power-law-type behavior. The superfluid density ρs(T), converted from the penetration depth λ(T), is best fitted by an anisotropic two-band BCS model. We argue that such a complex order parameter is attributed to the admixture of spin-singlet and spin-triplet pairing states as a result of antisymmetric spin-orbit coupling in BiPd.",

author = "L. Jiao and Zhang, {J. L.} and Y. Chen and Weng, {Z. F.} and Shao, {Y. M.} and Feng, {J. Y.} and X. Lu and B. Joshi and A. Thamizhavel and S. Ramakrishnan and Yuan, {H. Q.}",

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doi = "10.1103/PhysRevB.89.060507",

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TY - JOUR

T1 - Anisotropic superconductivity in noncentrosymmetric BiPd

AU - Jiao, L.

AU - Zhang, J. L.

AU - Chen, Y.

AU - Weng, Z. F.

AU - Shao, Y. M.

AU - Feng, J. Y.

AU - Lu, X.

AU - Joshi, B.

AU - Thamizhavel, A.

AU - Ramakrishnan, S.

AU - Yuan, H. Q.

PY - 2014/2/28

Y1 - 2014/2/28

N2 - We report measurements of London penetration depth λ(T) for the noncentrosymmetric superconductor BiPd by using a tunnel diode oscillator. Pronounced anisotropic behavior is observed in the low-temperature penetration depth; the in-plane penetration depth λac(T) follows an exponential decrease, but the interplane penetration depth λb(T) shows power-law-type behavior. The superfluid density ρs(T), converted from the penetration depth λ(T), is best fitted by an anisotropic two-band BCS model. We argue that such a complex order parameter is attributed to the admixture of spin-singlet and spin-triplet pairing states as a result of antisymmetric spin-orbit coupling in BiPd.

AB - We report measurements of London penetration depth λ(T) for the noncentrosymmetric superconductor BiPd by using a tunnel diode oscillator. Pronounced anisotropic behavior is observed in the low-temperature penetration depth; the in-plane penetration depth λac(T) follows an exponential decrease, but the interplane penetration depth λb(T) shows power-law-type behavior. The superfluid density ρs(T), converted from the penetration depth λ(T), is best fitted by an anisotropic two-band BCS model. We argue that such a complex order parameter is attributed to the admixture of spin-singlet and spin-triplet pairing states as a result of antisymmetric spin-orbit coupling in BiPd.

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DO - 10.1103/PhysRevB.89.060507

M3 - Article

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VL - 89

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 6

M1 - 060507

ER -

Anisotropic superconductivity in noncentrosymmetric BiPd

Abstract

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