Critical fields of (La.925Ba.075)2CuO4-y

M. J. Naughton; P. M. Chaikin; C. W. Chu; P. H. Hor; R. L. Meng

doi:10.1016/0038-1098(87)91079-9

Critical fields of (La_.925Ba_.075)₂CuO_4-y

M. J. Naughton, P. M. Chaikin, C. W. Chu, P. H. Hor, R. L. Meng

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Abstract

We have measured the upper critical field of (La_.925Ba_.075)₂CuO_4-y in the range from 0 to 30 Tesla in the hybrid magnet at the Francis Bitter National Magnet Lab. The resistive transition in zero field onsets above 3 OK, with .9R_n at 29K, .1R_n at 27K and 0 below 24K (R_n = R(3 4K). Following the II-T curves for different fractions of R_n we find substantial differences in the temperature dependence of the apparent critical field. However, for (H,T)=.9R_n there is good agreement with simple pairbreaking behavior with an extrapolated H_c2(0) of 46 Tesla. At 4K there is no measurable resistance to 30 Tesla.

Original language	English
Pages (from-to)	531-533
Number of pages	3
Journal	Solid State Communications
Volume	62
Issue number	8
DOIs	https://doi.org/10.1016/0038-1098(87)91079-9
Publication status	Published - 1987 May

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
Materials Chemistry

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10.1016/0038-1098(87)91079-9

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title = "Critical fields of (La.925Ba.075)2CuO4-y",

abstract = "We have measured the upper critical field of (La.925Ba.075)2CuO4-y in the range from 0 to 30 Tesla in the hybrid magnet at the Francis Bitter National Magnet Lab. The resistive transition in zero field onsets above 3 OK, with .9Rn at 29K, .1Rn at 27K and 0 below 24K (Rn = R(3 4K). Following the II-T curves for different fractions of Rn we find substantial differences in the temperature dependence of the apparent critical field. However, for (H,T)=.9Rn there is good agreement with simple pairbreaking behavior with an extrapolated Hc2(0) of 46 Tesla. At 4K there is no measurable resistance to 30 Tesla.",

author = "Naughton, {M. J.} and Chaikin, {P. M.} and Chu, {C. W.} and Hor, {P. H.} and Meng, {R. L.}",

note = "Funding Information: Research supported by NSF under grants DMRSg-18060. and LRSM DMR85-19059 (PNC, MINl and DNR82-04173 (CWC, PHIi and l&Ml and by NASA NAGW-977 (CWC, PHH and RLM).",

year = "1987",

month = may,

doi = "10.1016/0038-1098(87)91079-9",

language = "English",

volume = "62",

pages = "531--533",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Limited",

number = "8",

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TY - JOUR

T1 - Critical fields of (La.925Ba.075)2CuO4-y

AU - Naughton, M. J.

AU - Chaikin, P. M.

AU - Chu, C. W.

AU - Hor, P. H.

AU - Meng, R. L.

N1 - Funding Information: Research supported by NSF under grants DMRSg-18060. and LRSM DMR85-19059 (PNC, MINl and DNR82-04173 (CWC, PHIi and l&Ml and by NASA NAGW-977 (CWC, PHH and RLM).

PY - 1987/5

Y1 - 1987/5

N2 - We have measured the upper critical field of (La.925Ba.075)2CuO4-y in the range from 0 to 30 Tesla in the hybrid magnet at the Francis Bitter National Magnet Lab. The resistive transition in zero field onsets above 3 OK, with .9Rn at 29K, .1Rn at 27K and 0 below 24K (Rn = R(3 4K). Following the II-T curves for different fractions of Rn we find substantial differences in the temperature dependence of the apparent critical field. However, for (H,T)=.9Rn there is good agreement with simple pairbreaking behavior with an extrapolated Hc2(0) of 46 Tesla. At 4K there is no measurable resistance to 30 Tesla.

AB - We have measured the upper critical field of (La.925Ba.075)2CuO4-y in the range from 0 to 30 Tesla in the hybrid magnet at the Francis Bitter National Magnet Lab. The resistive transition in zero field onsets above 3 OK, with .9Rn at 29K, .1Rn at 27K and 0 below 24K (Rn = R(3 4K). Following the II-T curves for different fractions of Rn we find substantial differences in the temperature dependence of the apparent critical field. However, for (H,T)=.9Rn there is good agreement with simple pairbreaking behavior with an extrapolated Hc2(0) of 46 Tesla. At 4K there is no measurable resistance to 30 Tesla.

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U2 - 10.1016/0038-1098(87)91079-9

DO - 10.1016/0038-1098(87)91079-9

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EP - 533

JO - Solid State Communications

JF - Solid State Communications

IS - 8

ER -

Critical fields of (La_.925Ba_.075)₂CuO_4-y

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