Doping evolution of the absolute value of the London penetration depth and superfluid density in single crystals of Ba ( Fe1-x Co x)2 As2

R. T. Gordon; H. Kim; N. Salovich; R. W. Giannetta; R. M. Fernandes; V. G. Kogan; T. Prozorov; S. L. Bud'Ko; P. C. Canfield; M. A. Tanatar; R. Prozorov

doi:10.1103/PhysRevB.82.054507

Doping evolution of the absolute value of the London penetration depth and superfluid density in single crystals of Ba ( Fe_1-x Co _x)₂ As₂

R. T. Gordon, H. Kim, N. Salovich, R. W. Giannetta, R. M. Fernandes, V. G. Kogan, T. Prozorov, S. L. Bud'Ko, P. C. Canfield, M. A. Tanatar, R. Prozorov

Physics

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

Abstract

The zero-temperature value of the in-plane London penetration depth, λ_ab (0), has been measured in single crystals of Ba (Fe _1-x Co_x)₂ As₂ as a function of the Co concentration, x, across both the underdoped and overdoped superconducting regions of the phase diagram. For x≤0.047, λab (0) has been found to have values between 120±50 and 300±50nm. A pronounced increase in λ_ab (0), to a value as high as 950±50nm, has been observed for x≤0.047, corresponding to the region of the phase diagram where the itinerant antiferromagnetic and superconducting phases coexist and compete. Direct determination of the doping-dependent λ_ab (0) has allowed us to track the evolution of the temperature-dependent superfluid density, from which we infer the development of a pronounced superconducting gap anisotropy at the edges of the superconducting dome.

Original language	English (US)
Article number	054507
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevB.82.054507
State	Published - Aug 6 2010

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Online availability

10.1103/PhysRevB.82.054507

Library availability

Discover UIUC Full Text

Cite this

Gordon, R. T., Kim, H., Salovich, N., Giannetta, R. W., Fernandes, R. M., Kogan, V. G., Prozorov, T., Bud'Ko, S. L., Canfield, P. C., Tanatar, M. A., & Prozorov, R. (2010). Doping evolution of the absolute value of the London penetration depth and superfluid density in single crystals of Ba ( Fe_1-x Co _x)₂ As₂. Physical Review B - Condensed Matter and Materials Physics, 82(5), Article 054507. https://doi.org/10.1103/PhysRevB.82.054507

Gordon, RT, Kim, H, Salovich, N, Giannetta, RW , Fernandes, RM, Kogan, VG, Prozorov, T, Bud'Ko, SL, Canfield, PC, Tanatar, MA & Prozorov, R 2010, 'Doping evolution of the absolute value of the London penetration depth and superfluid density in single crystals of Ba ( Fe_1-x Co _x)₂ As₂', Physical Review B - Condensed Matter and Materials Physics, vol. 82, no. 5, 054507. https://doi.org/10.1103/PhysRevB.82.054507

@article{2d587919f2a04bb99cceef55ce9eacee,

title = "Doping evolution of the absolute value of the London penetration depth and superfluid density in single crystals of Ba ( Fe1-x Co x)2 As2",

abstract = "The zero-temperature value of the in-plane London penetration depth, λab (0), has been measured in single crystals of Ba (Fe 1-x Cox)2 As2 as a function of the Co concentration, x, across both the underdoped and overdoped superconducting regions of the phase diagram. For x≤0.047, λab (0) has been found to have values between 120±50 and 300±50nm. A pronounced increase in λab (0), to a value as high as 950±50nm, has been observed for x≤0.047, corresponding to the region of the phase diagram where the itinerant antiferromagnetic and superconducting phases coexist and compete. Direct determination of the doping-dependent λab (0) has allowed us to track the evolution of the temperature-dependent superfluid density, from which we infer the development of a pronounced superconducting gap anisotropy at the edges of the superconducting dome.",

author = "Gordon, {R. T.} and H. Kim and N. Salovich and Giannetta, {R. W.} and Fernandes, {R. M.} and Kogan, {V. G.} and T. Prozorov and Bud'Ko, {S. L.} and Canfield, {P. C.} and Tanatar, {M. A.} and R. Prozorov",

year = "2010",

month = aug,

day = "6",

doi = "10.1103/PhysRevB.82.054507",

language = "English (US)",

volume = "82",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Institute of Physics",

number = "5",

}

TY - JOUR

T1 - Doping evolution of the absolute value of the London penetration depth and superfluid density in single crystals of Ba ( Fe1-x Co x)2 As2

AU - Gordon, R. T.

AU - Kim, H.

AU - Salovich, N.

AU - Giannetta, R. W.

AU - Fernandes, R. M.

AU - Kogan, V. G.

AU - Prozorov, T.

AU - Bud'Ko, S. L.

AU - Canfield, P. C.

AU - Tanatar, M. A.

AU - Prozorov, R.

PY - 2010/8/6

Y1 - 2010/8/6

N2 - The zero-temperature value of the in-plane London penetration depth, λab (0), has been measured in single crystals of Ba (Fe 1-x Cox)2 As2 as a function of the Co concentration, x, across both the underdoped and overdoped superconducting regions of the phase diagram. For x≤0.047, λab (0) has been found to have values between 120±50 and 300±50nm. A pronounced increase in λab (0), to a value as high as 950±50nm, has been observed for x≤0.047, corresponding to the region of the phase diagram where the itinerant antiferromagnetic and superconducting phases coexist and compete. Direct determination of the doping-dependent λab (0) has allowed us to track the evolution of the temperature-dependent superfluid density, from which we infer the development of a pronounced superconducting gap anisotropy at the edges of the superconducting dome.

AB - The zero-temperature value of the in-plane London penetration depth, λab (0), has been measured in single crystals of Ba (Fe 1-x Cox)2 As2 as a function of the Co concentration, x, across both the underdoped and overdoped superconducting regions of the phase diagram. For x≤0.047, λab (0) has been found to have values between 120±50 and 300±50nm. A pronounced increase in λab (0), to a value as high as 950±50nm, has been observed for x≤0.047, corresponding to the region of the phase diagram where the itinerant antiferromagnetic and superconducting phases coexist and compete. Direct determination of the doping-dependent λab (0) has allowed us to track the evolution of the temperature-dependent superfluid density, from which we infer the development of a pronounced superconducting gap anisotropy at the edges of the superconducting dome.

UR - http://www.scopus.com/inward/record.url?scp=77957344859&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77957344859&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.82.054507

DO - 10.1103/PhysRevB.82.054507

M3 - Article

AN - SCOPUS:77957344859

SN - 1098-0121

VL - 82

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 5

M1 - 054507

ER -