Magnetism and disorder effects on muon spin rotation measurements of the magnetic penetration depth in iron-arsenic superconductors

J. E. Sonier; W. Huang; C. V. Kaiser; C. Cochrane; V. Pacradouni; S. A. Sabok-Sayr; M. D. Lumsden; B. C. Sales; M. A. McGuire; A. S. Sefat; D. Mandrus

doi:10.1103/PhysRevLett.106.127002

Magnetism and disorder effects on muon spin rotation measurements of the magnetic penetration depth in iron-arsenic superconductors

J. E. Sonier
, W. Huang
, C. V. Kaiser
, C. Cochrane
, V. Pacradouni
, S. A. Sabok-Sayr
, M. D. Lumsden
, B. C. Sales
, M. A. McGuire
, A. S. Sefat
, D. Mandrus

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

30 Scopus citations

Abstract

It is shown that attempts to accurately deduce the magnetic penetration depth λ of overdoped BaFe_1.82Co_0.18As₂ single crystals by transverse-field muon spin rotation (TF μSR) are thwarted by field-induced magnetic order and strong vortex-lattice disorder. We explain how substantial deviations from the magnetic field distribution of a nearly perfect vortex lattice by one or both of these factors is also significant for other iron-arsenic superconductors, and this introduces considerable uncertainty in the values of λ obtained by TF μSR.

Original language	English
Article number	127002
Journal	Physical Review Letters
Volume	106
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.106.127002
State	Published - Mar 23 2011

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10.1103/PhysRevLett.106.127002

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Sonier, J. E., Huang, W., Kaiser, C. V., Cochrane, C., Pacradouni, V., Sabok-Sayr, S. A., Lumsden, M. D., Sales, B. C., McGuire, M. A., Sefat, A. S., & Mandrus, D. (2011). Magnetism and disorder effects on muon spin rotation measurements of the magnetic penetration depth in iron-arsenic superconductors. Physical Review Letters, 106(12), Article 127002. https://doi.org/10.1103/PhysRevLett.106.127002

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title = "Magnetism and disorder effects on muon spin rotation measurements of the magnetic penetration depth in iron-arsenic superconductors",

abstract = "It is shown that attempts to accurately deduce the magnetic penetration depth λ of overdoped BaFe1.82Co0.18As2 single crystals by transverse-field muon spin rotation (TF μSR) are thwarted by field-induced magnetic order and strong vortex-lattice disorder. We explain how substantial deviations from the magnetic field distribution of a nearly perfect vortex lattice by one or both of these factors is also significant for other iron-arsenic superconductors, and this introduces considerable uncertainty in the values of λ obtained by TF μSR.",

author = "Sonier, \{J. E.\} and W. Huang and Kaiser, \{C. V.\} and C. Cochrane and V. Pacradouni and Sabok-Sayr, \{S. A.\} and Lumsden, \{M. D.\} and Sales, \{B. C.\} and McGuire, \{M. A.\} and Sefat, \{A. S.\} and D. Mandrus",

year = "2011",

month = mar,

day = "23",

doi = "10.1103/PhysRevLett.106.127002",

language = "English",

volume = "106",

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Sonier, JE, Huang, W, Kaiser, CV, Cochrane, C, Pacradouni, V, Sabok-Sayr, SA, Lumsden, MD, Sales, BC, McGuire, MA, Sefat, AS & Mandrus, D 2011, 'Magnetism and disorder effects on muon spin rotation measurements of the magnetic penetration depth in iron-arsenic superconductors', Physical Review Letters, vol. 106, no. 12, 127002. https://doi.org/10.1103/PhysRevLett.106.127002

TY - JOUR

T1 - Magnetism and disorder effects on muon spin rotation measurements of the magnetic penetration depth in iron-arsenic superconductors

AU - Sonier, J. E.

AU - Huang, W.

AU - Kaiser, C. V.

AU - Cochrane, C.

AU - Pacradouni, V.

AU - Sabok-Sayr, S. A.

AU - Lumsden, M. D.

AU - Sales, B. C.

AU - McGuire, M. A.

AU - Sefat, A. S.

AU - Mandrus, D.

PY - 2011/3/23

Y1 - 2011/3/23

N2 - It is shown that attempts to accurately deduce the magnetic penetration depth λ of overdoped BaFe1.82Co0.18As2 single crystals by transverse-field muon spin rotation (TF μSR) are thwarted by field-induced magnetic order and strong vortex-lattice disorder. We explain how substantial deviations from the magnetic field distribution of a nearly perfect vortex lattice by one or both of these factors is also significant for other iron-arsenic superconductors, and this introduces considerable uncertainty in the values of λ obtained by TF μSR.

AB - It is shown that attempts to accurately deduce the magnetic penetration depth λ of overdoped BaFe1.82Co0.18As2 single crystals by transverse-field muon spin rotation (TF μSR) are thwarted by field-induced magnetic order and strong vortex-lattice disorder. We explain how substantial deviations from the magnetic field distribution of a nearly perfect vortex lattice by one or both of these factors is also significant for other iron-arsenic superconductors, and this introduces considerable uncertainty in the values of λ obtained by TF μSR.

UR - https://www.scopus.com/pages/publications/79952903631

U2 - 10.1103/PhysRevLett.106.127002

DO - 10.1103/PhysRevLett.106.127002

M3 - Article

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SN - 0031-9007

VL - 106

JO - Physical Review Letters

JF - Physical Review Letters

IS - 12

M1 - 127002

ER -

Magnetism and disorder effects on muon spin rotation measurements of the magnetic penetration depth in iron-arsenic superconductors

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