Orientational anisotropy of the upper critical field in single-crystal YBa2Cu3O7 and Bi2.2CaSr1.9Cu2O8+x

M. J. Naughton; R. C. Yu; P. K. Davies; J. E. Fischer; R. V. Chamberlin; Z. Z. Wang; T. W. Jing; N. P. Ong; P. M. Chaikin

doi:10.1103/PhysRevB.38.9280

Orientational anisotropy of the upper critical field in single-crystal YBa2Cu3O7 and Bi2.2CaSr1.9Cu2O8+x

M. J. Naughton, R. C. Yu, P. K. Davies, J. E. Fischer, R. V. Chamberlin, Z. Z. Wang, T. W. Jing, N. P. Ong, P. M. Chaikin

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Abstract

We have measured the dependence of the upper critical magnetic field upon orientation for single-crystal samples of YBa2Cu3O7 and Bi2.2CaSr1.9Cu2O8+x via four-probe resistance. We find continuous behavior of Hc2 for small deviations from parallel orientation for the Y sample, as expected for an anisotropic, three-dimensional superconductor. For the Bi sample, however, our data are more consistent with a thin-film model, exhibiting a cusp at parallel orientation, suggesting that Bi2.2CaSr1.9Cu2O8+x is a quasi-two-dimensional system.

Original language	English (US)
Pages (from-to)	9280-9283
Number of pages	4
Journal	Physical Review B
Volume	38
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.38.9280
State	Published - 1988

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1103/PhysRevB.38.9280

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title = "Orientational anisotropy of the upper critical field in single-crystal YBa2Cu3O7 and Bi2.2CaSr1.9Cu2O8+x",

abstract = "We have measured the dependence of the upper critical magnetic field upon orientation for single-crystal samples of YBa2Cu3O7 and Bi2.2CaSr1.9Cu2O8+x via four-probe resistance. We find continuous behavior of Hc2 for small deviations from parallel orientation for the Y sample, as expected for an anisotropic, three-dimensional superconductor. For the Bi sample, however, our data are more consistent with a thin-film model, exhibiting a cusp at parallel orientation, suggesting that Bi2.2CaSr1.9Cu2O8+x is a quasi-two-dimensional system.",

author = "Naughton, {M. J.} and Yu, {R. C.} and Davies, {P. K.} and Fischer, {J. E.} and Chamberlin, {R. V.} and Wang, {Z. Z.} and Jing, {T. W.} and Ong, {N. P.} and Chaikin, {P. M.}",

year = "1988",

doi = "10.1103/PhysRevB.38.9280",

language = "English (US)",

volume = "38",

pages = "9280--9283",

journal = "Physical Review B",

issn = "0163-1829",

publisher = "American Physical Society",

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TY - JOUR

T1 - Orientational anisotropy of the upper critical field in single-crystal YBa2Cu3O7 and Bi2.2CaSr1.9Cu2O8+x

AU - Naughton, M. J.

AU - Yu, R. C.

AU - Davies, P. K.

AU - Fischer, J. E.

AU - Chamberlin, R. V.

AU - Wang, Z. Z.

AU - Jing, T. W.

AU - Ong, N. P.

AU - Chaikin, P. M.

PY - 1988

Y1 - 1988

N2 - We have measured the dependence of the upper critical magnetic field upon orientation for single-crystal samples of YBa2Cu3O7 and Bi2.2CaSr1.9Cu2O8+x via four-probe resistance. We find continuous behavior of Hc2 for small deviations from parallel orientation for the Y sample, as expected for an anisotropic, three-dimensional superconductor. For the Bi sample, however, our data are more consistent with a thin-film model, exhibiting a cusp at parallel orientation, suggesting that Bi2.2CaSr1.9Cu2O8+x is a quasi-two-dimensional system.

AB - We have measured the dependence of the upper critical magnetic field upon orientation for single-crystal samples of YBa2Cu3O7 and Bi2.2CaSr1.9Cu2O8+x via four-probe resistance. We find continuous behavior of Hc2 for small deviations from parallel orientation for the Y sample, as expected for an anisotropic, three-dimensional superconductor. For the Bi sample, however, our data are more consistent with a thin-film model, exhibiting a cusp at parallel orientation, suggesting that Bi2.2CaSr1.9Cu2O8+x is a quasi-two-dimensional system.

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U2 - 10.1103/PhysRevB.38.9280

DO - 10.1103/PhysRevB.38.9280

M3 - Article

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JO - Physical Review B

JF - Physical Review B

IS - 13

ER -

Orientational anisotropy of the upper critical field in single-crystal YBa2Cu3O7 and Bi2.2CaSr1.9Cu2O8+x

Abstract

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