Interlayer coupling effect in high-Tc superconductors probed by YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices

Q. Li; X. X. Xi; X. D. Wu; A. Inam; S. Vadlamannati; W. L. McLean; T. Venkatesan; R. Ramesh; D. M. Hwang; J. A. Martinez; L. Nazar

doi:10.1103/PhysRevLett.64.3086

Interlayer coupling effect in high-Tc superconductors probed by YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices

Q. Li, X. X. Xi, X. D. Wu, A. Inam, S. Vadlamannati, W. L. McLean, T. Venkatesan, R. Ramesh, D. M. Hwang, J. A. Martinez, L. Nazar

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Abstract

The effect of coupling between layers of the high-Tc superconductors was studied by varying both the YBa2Cu3O7-x and PrBa2Cu3O7-x layer thicknesses in YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices. Superconductivity was found even when the YBa2Cu3O7-x layers had nominal thicknesses as small as 12 (one unit-cell thickness) but coupling between unit-cell layers is needed to achieve a Tc of 90 K. The decrease of Tc in isolated YBa2Cu3O7-x layers with increasing sheet resistance is on the same scale of about Latin small letter h with stroke/e2 as observed for ordinary superconductors.

Original language	English (US)
Pages (from-to)	3086-3089
Number of pages	4
Journal	Physical review letters
Volume	64
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.64.3086
State	Published - 1990

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.64.3086

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title = "Interlayer coupling effect in high-Tc superconductors probed by YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices",

abstract = "The effect of coupling between layers of the high-Tc superconductors was studied by varying both the YBa2Cu3O7-x and PrBa2Cu3O7-x layer thicknesses in YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices. Superconductivity was found even when the YBa2Cu3O7-x layers had nominal thicknesses as small as 12 (one unit-cell thickness) but coupling between unit-cell layers is needed to achieve a Tc of 90 K. The decrease of Tc in isolated YBa2Cu3O7-x layers with increasing sheet resistance is on the same scale of about Latin small letter h with stroke/e2 as observed for ordinary superconductors.",

author = "Q. Li and Xi, {X. X.} and Wu, {X. D.} and A. Inam and S. Vadlamannati and McLean, {W. L.} and T. Venkatesan and R. Ramesh and Hwang, {D. M.} and Martinez, {J. A.} and L. Nazar",

year = "1990",

doi = "10.1103/PhysRevLett.64.3086",

language = "English (US)",

volume = "64",

pages = "3086--3089",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

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T1 - Interlayer coupling effect in high-Tc superconductors probed by YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices

AU - Li, Q.

AU - Xi, X. X.

AU - Wu, X. D.

AU - Inam, A.

AU - Vadlamannati, S.

AU - McLean, W. L.

AU - Venkatesan, T.

AU - Ramesh, R.

AU - Hwang, D. M.

AU - Martinez, J. A.

AU - Nazar, L.

PY - 1990

Y1 - 1990

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AB - The effect of coupling between layers of the high-Tc superconductors was studied by varying both the YBa2Cu3O7-x and PrBa2Cu3O7-x layer thicknesses in YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices. Superconductivity was found even when the YBa2Cu3O7-x layers had nominal thicknesses as small as 12 (one unit-cell thickness) but coupling between unit-cell layers is needed to achieve a Tc of 90 K. The decrease of Tc in isolated YBa2Cu3O7-x layers with increasing sheet resistance is on the same scale of about Latin small letter h with stroke/e2 as observed for ordinary superconductors.

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DO - 10.1103/PhysRevLett.64.3086

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JF - Physical review letters

IS - 25

ER -

Interlayer coupling effect in high-Tc superconductors probed by YBa2Cu3O7-x/PrBa2Cu3O7-x superlattices

Abstract

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