Inductive Measurements of λ.(T) of bare YBCO Films and the Proximity Effect in YBCO/Normal Metal Bilayers

C. W. Schneider; R. E. Somekh; J. E. Evetts; I. M. Watson; F. Baudenbacher; N. G. Chew; D. J.C. Walker; S. N. Mao; X. X. Xi; Q. Li; Chuhee Kwon; T. Venkatesan; R. G. Humphreys; R. G.A. Beck

doi:10.1109/77.402834

Inductive Measurements of λ.(T) of bare YBCO Films and the Proximity Effect in YBCO/Normal Metal Bilayers

C. W. Schneider, R. E. Somekh, J. E. Evetts, I. M. Watson, F. Baudenbacher, N. G. Chew, D. J.C. Walker, S. N. Mao, X. X. Xi, Q. Li, Chuhee Kwon, T. Venkatesan, R. G. Humphreys, R. G.A. Beck

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Abstract

Inductive measurements were performed on YBa2Cu3O7-δ(YBCO) films and superconducting / normal metal bilayers using Au, PrBa2Cu3O7-δ and (Y0.4Pr0.6)Ba2Cu3O7-δas normal material in order to investigate their screening properties between Tcand 2.2K. YBCO films were prepared using high pressure dc and hollow cathode sputtering, laser ablation, MOCVD and reactive thermal coevaporation and the penetration depth, λ,and the c-axis lattice parameter measured. Comparison of the temperature dependence of the superfluid density, ns(T), for the YBCO films showed a significant difference in the shape of ns(T) depending on the deposition method used. This could have implications for preparing stable passive microwave devices. We have also demonstrated that SN-bilayers, using YBCO as the superconductor, exhibit an enhanced screening over the entire temperature range compared with bare YBCO films.

Original language	English (US)
Pages (from-to)	1432-1435
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	5
Issue number	2
DOIs	https://doi.org/10.1109/77.402834
State	Published - Jun 1995

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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Schneider, C. W., Somekh, R. E., Evetts, J. E., Watson, I. M., Baudenbacher, F., Chew, N. G., Walker, D. J. C., Mao, S. N., Xi, X. X., Li, Q., Kwon, C., Venkatesan, T., Humphreys, R. G., & Beck, R. G. A. (1995). Inductive Measurements of λ.(T) of bare YBCO Films and the Proximity Effect in YBCO/Normal Metal Bilayers. IEEE Transactions on Applied Superconductivity, 5(2), 1432-1435. https://doi.org/10.1109/77.402834

@article{7d82a0b36364447596c727c5f308d68e,

title = "Inductive Measurements of λ.(T) of bare YBCO Films and the Proximity Effect in YBCO/Normal Metal Bilayers",

abstract = "Inductive measurements were performed on YBa2Cu3O7-δ(YBCO) films and superconducting / normal metal bilayers using Au, PrBa2Cu3O7-δ and (Y0.4Pr0.6)Ba2Cu3O7-δas normal material in order to investigate their screening properties between Tcand 2.2K. YBCO films were prepared using high pressure dc and hollow cathode sputtering, laser ablation, MOCVD and reactive thermal coevaporation and the penetration depth, λ,and the c-axis lattice parameter measured. Comparison of the temperature dependence of the superfluid density, ns(T), for the YBCO films showed a significant difference in the shape of ns(T) depending on the deposition method used. This could have implications for preparing stable passive microwave devices. We have also demonstrated that SN-bilayers, using YBCO as the superconductor, exhibit an enhanced screening over the entire temperature range compared with bare YBCO films.",

author = "Schneider, {C. W.} and Somekh, {R. E.} and Evetts, {J. E.} and Watson, {I. M.} and F. Baudenbacher and Chew, {N. G.} and Walker, {D. J.C.} and Mao, {S. N.} and Xi, {X. X.} and Q. Li and Chuhee Kwon and T. Venkatesan and Humphreys, {R. G.} and Beck, {R. G.A.}",

year = "1995",

month = jun,

doi = "10.1109/77.402834",

language = "English (US)",

volume = "5",

pages = "1432--1435",

journal = "IEEE Transactions on Applied Superconductivity",

issn = "1051-8223",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2",

}

Schneider, CW, Somekh, RE, Evetts, JE, Watson, IM, Baudenbacher, F, Chew, NG, Walker, DJC, Mao, SN, Xi, XX, Li, Q, Kwon, C, Venkatesan, T, Humphreys, RG & Beck, RGA 1995, 'Inductive Measurements of λ.(T) of bare YBCO Films and the Proximity Effect in YBCO/Normal Metal Bilayers', IEEE Transactions on Applied Superconductivity, vol. 5, no. 2, pp. 1432-1435. https://doi.org/10.1109/77.402834

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AU - Schneider, C. W.

AU - Somekh, R. E.

AU - Evetts, J. E.

AU - Watson, I. M.

AU - Baudenbacher, F.

AU - Chew, N. G.

AU - Walker, D. J.C.

AU - Mao, S. N.

AU - Xi, X. X.

AU - Li, Q.

AU - Kwon, Chuhee

AU - Venkatesan, T.

AU - Humphreys, R. G.

AU - Beck, R. G.A.

PY - 1995/6

Y1 - 1995/6

N2 - Inductive measurements were performed on YBa2Cu3O7-δ(YBCO) films and superconducting / normal metal bilayers using Au, PrBa2Cu3O7-δ and (Y0.4Pr0.6)Ba2Cu3O7-δas normal material in order to investigate their screening properties between Tcand 2.2K. YBCO films were prepared using high pressure dc and hollow cathode sputtering, laser ablation, MOCVD and reactive thermal coevaporation and the penetration depth, λ,and the c-axis lattice parameter measured. Comparison of the temperature dependence of the superfluid density, ns(T), for the YBCO films showed a significant difference in the shape of ns(T) depending on the deposition method used. This could have implications for preparing stable passive microwave devices. We have also demonstrated that SN-bilayers, using YBCO as the superconductor, exhibit an enhanced screening over the entire temperature range compared with bare YBCO films.

AB - Inductive measurements were performed on YBa2Cu3O7-δ(YBCO) films and superconducting / normal metal bilayers using Au, PrBa2Cu3O7-δ and (Y0.4Pr0.6)Ba2Cu3O7-δas normal material in order to investigate their screening properties between Tcand 2.2K. YBCO films were prepared using high pressure dc and hollow cathode sputtering, laser ablation, MOCVD and reactive thermal coevaporation and the penetration depth, λ,and the c-axis lattice parameter measured. Comparison of the temperature dependence of the superfluid density, ns(T), for the YBCO films showed a significant difference in the shape of ns(T) depending on the deposition method used. This could have implications for preparing stable passive microwave devices. We have also demonstrated that SN-bilayers, using YBCO as the superconductor, exhibit an enhanced screening over the entire temperature range compared with bare YBCO films.

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Inductive Measurements of λ.(T) of bare YBCO Films and the Proximity Effect in YBCO/Normal Metal Bilayers

Abstract

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