A μSR determination of the penetration depth in superconducting YNi2B2C

R. Cywinski; Z. P. Han; R. Bewley; R. Cubitt; M. T. Wylie; E. M. Forgan; S. L. Lee; M. Warden; S. H. Kilcoyne

doi:10.1016/0921-4534(94)90753-6

A μSR determination of the penetration depth in superconducting YNi₂B₂C

R. Cywinski^*, Z. P. Han, R. Bewley, R. Cubitt, M. T. Wylie, E. M. Forgan, S. L. Lee, M. Warden, S. H. Kilcoyne

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

Muon spin rotation (μSR) and magnetisation measurements have been used to characterise the superconducting state of YNi₂B₂C below T_c = 15 K. A measured B_c2 (0) of 6.0(5) T and B_c1 (0) of 36.9(5) mT from magnetisation measurements, together with the μSR measurements, provide a coherence length, ξ(0), of 8.1 nm and a magnetic penetration depth, λ(0), of 103 nm. The temperature dependence of the penetration depth deduced from the μSR measurements is consistent with the BCS model and implies conventional s wave pairing in YNi₂B₂C. Using these results together with existing thermodynamic data we estimate a superconducting carrier density of 1.9 per formula unit and an electron-mass enhancement factor of 9.4.

Original language	English
Pages (from-to)	273-280
Number of pages	8
Journal	Physica C: Superconductivity and its applications
Volume	233
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(94)90753-6
Publication status	Published - 20 Nov 1994

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@article{d47f643a609548f780c3ddeb2462c7a3,

title = "A μSR determination of the penetration depth in superconducting YNi2B2C",

abstract = "Muon spin rotation (μSR) and magnetisation measurements have been used to characterise the superconducting state of YNi2B2C below Tc = 15 K. A measured Bc2 (0) of 6.0(5) T and Bc1 (0) of 36.9(5) mT from magnetisation measurements, together with the μSR measurements, provide a coherence length, ξ(0), of 8.1 nm and a magnetic penetration depth, λ(0), of 103 nm. The temperature dependence of the penetration depth deduced from the μSR measurements is consistent with the BCS model and implies conventional s wave pairing in YNi2B2C. Using these results together with existing thermodynamic data we estimate a superconducting carrier density of 1.9 per formula unit and an electron-mass enhancement factor of 9.4.",

author = "R. Cywinski and Han, {Z. P.} and R. Bewley and R. Cubitt and Wylie, {M. T.} and Forgan, {E. M.} and Lee, {S. L.} and M. Warden and Kilcoyne, {S. H.}",

note = "Funding Information: We gratefully acknowledget he Swiss National Science Foundation (NFP30 4030-32785), the Science and Engineering Research Council and the British-Swiss Joint Research Program for financial support.",

year = "1994",

month = nov,

day = "20",

doi = "10.1016/0921-4534(94)90753-6",

language = "English",

volume = "233",

pages = "273--280",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier Science BV",

number = "3-4",

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TY - JOUR

T1 - A μSR determination of the penetration depth in superconducting YNi2B2C

AU - Cywinski, R.

AU - Han, Z. P.

AU - Bewley, R.

AU - Cubitt, R.

AU - Wylie, M. T.

AU - Forgan, E. M.

AU - Lee, S. L.

AU - Warden, M.

AU - Kilcoyne, S. H.

N1 - Funding Information: We gratefully acknowledget he Swiss National Science Foundation (NFP30 4030-32785), the Science and Engineering Research Council and the British-Swiss Joint Research Program for financial support.

PY - 1994/11/20

Y1 - 1994/11/20

N2 - Muon spin rotation (μSR) and magnetisation measurements have been used to characterise the superconducting state of YNi2B2C below Tc = 15 K. A measured Bc2 (0) of 6.0(5) T and Bc1 (0) of 36.9(5) mT from magnetisation measurements, together with the μSR measurements, provide a coherence length, ξ(0), of 8.1 nm and a magnetic penetration depth, λ(0), of 103 nm. The temperature dependence of the penetration depth deduced from the μSR measurements is consistent with the BCS model and implies conventional s wave pairing in YNi2B2C. Using these results together with existing thermodynamic data we estimate a superconducting carrier density of 1.9 per formula unit and an electron-mass enhancement factor of 9.4.

AB - Muon spin rotation (μSR) and magnetisation measurements have been used to characterise the superconducting state of YNi2B2C below Tc = 15 K. A measured Bc2 (0) of 6.0(5) T and Bc1 (0) of 36.9(5) mT from magnetisation measurements, together with the μSR measurements, provide a coherence length, ξ(0), of 8.1 nm and a magnetic penetration depth, λ(0), of 103 nm. The temperature dependence of the penetration depth deduced from the μSR measurements is consistent with the BCS model and implies conventional s wave pairing in YNi2B2C. Using these results together with existing thermodynamic data we estimate a superconducting carrier density of 1.9 per formula unit and an electron-mass enhancement factor of 9.4.

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U2 - 10.1016/0921-4534(94)90753-6

DO - 10.1016/0921-4534(94)90753-6

M3 - Article

AN - SCOPUS:0028547544

SN - 0921-4534

VL - 233

SP - 273

EP - 280

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 3-4

ER -

A μSR determination of the penetration depth in superconducting YNi₂B₂C

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