Studies of proximity-effect and tunneling in YBCO/metal layered films

L. H. Greene; J. B. Barner; W. L. Feldmann; L. A. Farrow; P. F. Miceli; R. Ramesh; B. J. Wilkens; B. G. Bagley; J. M. Tarascon; J. H. Wernick; M. Giroud; J. M. Rowell

doi:10.1016/0921-4534(89)90597-2

Studies of proximity-effect and tunneling in YBCO/metal layered films

L. H. Greene, J. B. Barner, W. L. Feldmann, L. A. Farrow, P. F. Miceli, R. Ramesh, B. J. Wilkens, B. G. Bagley, J. M. Tarascon, J. H. Wernick, M. Giroud, J. M. Rowell

Physics

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

Abstract

The short coherence length of the high-T_c superconductors, coupled with their tendency to form non-superconducting surface layers, accounts for the difficulty in achieving good tunnel junctions. A proximity layer of a longer coherence length normal metal (N) is expected to "draw out" Cooper pairs. Our goal is to fabricate reproducible, planar tunnel junctions of SNIS layered structures for proximity tunneling spectroscopy. Such structures of YBCO/N/I/Pb and SNS structures of YBCO/N/Pb indicate that the normal metal produces a low resistance contact to the YBCO surface with a supercurrent observed in the SNS. The insulating barrier in the SNIS is reproducible, insulating and continuous: A sharp Pb gap and phonons from the counter-electrode are routinely observed.

Original language	English (US)
Pages (from-to)	1069-1070
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	162-164
Issue number	PART 2
DOIs	https://doi.org/10.1016/0921-4534(89)90597-2
State	Published - Dec 1989

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(89)90597-2

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Greene, L. H., Barner, J. B., Feldmann, W. L., Farrow, L. A., Miceli, P. F., Ramesh, R., Wilkens, B. J., Bagley, B. G., Tarascon, J. M., Wernick, J. H., Giroud, M., & Rowell, J. M. (1989). Studies of proximity-effect and tunneling in YBCO/metal layered films. Physica C: Superconductivity and its applications, 162-164(PART 2), 1069-1070. https://doi.org/10.1016/0921-4534(89)90597-2

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title = "Studies of proximity-effect and tunneling in YBCO/metal layered films",

abstract = "The short coherence length of the high-Tc superconductors, coupled with their tendency to form non-superconducting surface layers, accounts for the difficulty in achieving good tunnel junctions. A proximity layer of a longer coherence length normal metal (N) is expected to {"}draw out{"} Cooper pairs. Our goal is to fabricate reproducible, planar tunnel junctions of SNIS layered structures for proximity tunneling spectroscopy. Such structures of YBCO/N/I/Pb and SNS structures of YBCO/N/Pb indicate that the normal metal produces a low resistance contact to the YBCO surface with a supercurrent observed in the SNS. The insulating barrier in the SNIS is reproducible, insulating and continuous: A sharp Pb gap and phonons from the counter-electrode are routinely observed.",

author = "Greene, {L. H.} and Barner, {J. B.} and Feldmann, {W. L.} and Farrow, {L. A.} and Miceli, {P. F.} and R. Ramesh and Wilkens, {B. J.} and Bagley, {B. G.} and Tarascon, {J. M.} and Wernick, {J. H.} and M. Giroud and Rowell, {J. M.}",

year = "1989",

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doi = "10.1016/0921-4534(89)90597-2",

language = "English (US)",

volume = "162-164",

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T1 - Studies of proximity-effect and tunneling in YBCO/metal layered films

AU - Greene, L. H.

AU - Barner, J. B.

AU - Feldmann, W. L.

AU - Farrow, L. A.

AU - Miceli, P. F.

AU - Ramesh, R.

AU - Wilkens, B. J.

AU - Bagley, B. G.

AU - Tarascon, J. M.

AU - Wernick, J. H.

AU - Giroud, M.

AU - Rowell, J. M.

PY - 1989/12

Y1 - 1989/12

N2 - The short coherence length of the high-Tc superconductors, coupled with their tendency to form non-superconducting surface layers, accounts for the difficulty in achieving good tunnel junctions. A proximity layer of a longer coherence length normal metal (N) is expected to "draw out" Cooper pairs. Our goal is to fabricate reproducible, planar tunnel junctions of SNIS layered structures for proximity tunneling spectroscopy. Such structures of YBCO/N/I/Pb and SNS structures of YBCO/N/Pb indicate that the normal metal produces a low resistance contact to the YBCO surface with a supercurrent observed in the SNS. The insulating barrier in the SNIS is reproducible, insulating and continuous: A sharp Pb gap and phonons from the counter-electrode are routinely observed.

AB - The short coherence length of the high-Tc superconductors, coupled with their tendency to form non-superconducting surface layers, accounts for the difficulty in achieving good tunnel junctions. A proximity layer of a longer coherence length normal metal (N) is expected to "draw out" Cooper pairs. Our goal is to fabricate reproducible, planar tunnel junctions of SNIS layered structures for proximity tunneling spectroscopy. Such structures of YBCO/N/I/Pb and SNS structures of YBCO/N/Pb indicate that the normal metal produces a low resistance contact to the YBCO surface with a supercurrent observed in the SNS. The insulating barrier in the SNIS is reproducible, insulating and continuous: A sharp Pb gap and phonons from the counter-electrode are routinely observed.

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JO - Physica C: Superconductivity and its applications

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ER -

Studies of proximity-effect and tunneling in YBCO/metal layered films

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