Quantitative proximity tunneling spectroscopy

E. L. Wolf; J. Zasadzinski; J. W. Osmun; Gerald B. Arnold

doi:10.1016/0038-1098(79)90547-7

Quantitative proximity tunneling spectroscopy

E. L. Wolf, J. Zasadzinski, J. W. Osmun, Gerald B. Arnold

Applied Physics

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

Abstract

Using the new Green's function calculation of Arnold and an appropriate modification of the McMillan-Rowell procedure, it is demonstrated that tunneling characteristics of suitable proximity junctions may be inverted to determine the properties of superconductors which do not oxidize satisfactorily. The junctions employed are of the form M-Al₂O₃-Al/S (where S is the superconductor of interest). The Al thickness is less than 100 Å and the Al/S interface is specularly transmitting. Quantitative values for Δ_S(E) and Δ_N(E) are obtained for S=Nb, N=Al.

Original language	English (US)
Pages (from-to)	321-324
Number of pages	4
Journal	Solid State Communications
Volume	31
Issue number	5
DOIs	https://doi.org/10.1016/0038-1098(79)90547-7
State	Published - Aug 1979

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

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title = "Quantitative proximity tunneling spectroscopy",

abstract = "Using the new Green's function calculation of Arnold and an appropriate modification of the McMillan-Rowell procedure, it is demonstrated that tunneling characteristics of suitable proximity junctions may be inverted to determine the properties of superconductors which do not oxidize satisfactorily. The junctions employed are of the form M-Al2O3-Al/S (where S is the superconductor of interest). The Al thickness is less than 100 {\AA} and the Al/S interface is specularly transmitting. Quantitative values for ΔS(E) and ΔN(E) are obtained for S=Nb, N=Al.",

author = "Wolf, {E. L.} and J. Zasadzinski and Osmun, {J. W.} and Arnold, {Gerald B.}",

note = "Funding Information: Acknowledgement — This work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Materials Sciences Division and in part by NSF Grant DMH 77—10549 at Indiana University. We also thank Bell Laboratories for donation of a vacuum chamber, the Research Cor— poration for a Cottrell grant, and D. K. Finnemore, B. N. Harmon, and J. C. Swihart for helpful discussion.",

year = "1979",

month = aug,

doi = "10.1016/0038-1098(79)90547-7",

language = "English (US)",

volume = "31",

pages = "321--324",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Limited",

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TY - JOUR

T1 - Quantitative proximity tunneling spectroscopy

AU - Wolf, E. L.

AU - Zasadzinski, J.

AU - Osmun, J. W.

AU - Arnold, Gerald B.

N1 - Funding Information: Acknowledgement — This work was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Materials Sciences Division and in part by NSF Grant DMH 77—10549 at Indiana University. We also thank Bell Laboratories for donation of a vacuum chamber, the Research Cor— poration for a Cottrell grant, and D. K. Finnemore, B. N. Harmon, and J. C. Swihart for helpful discussion.

PY - 1979/8

Y1 - 1979/8

N2 - Using the new Green's function calculation of Arnold and an appropriate modification of the McMillan-Rowell procedure, it is demonstrated that tunneling characteristics of suitable proximity junctions may be inverted to determine the properties of superconductors which do not oxidize satisfactorily. The junctions employed are of the form M-Al2O3-Al/S (where S is the superconductor of interest). The Al thickness is less than 100 Å and the Al/S interface is specularly transmitting. Quantitative values for ΔS(E) and ΔN(E) are obtained for S=Nb, N=Al.

AB - Using the new Green's function calculation of Arnold and an appropriate modification of the McMillan-Rowell procedure, it is demonstrated that tunneling characteristics of suitable proximity junctions may be inverted to determine the properties of superconductors which do not oxidize satisfactorily. The junctions employed are of the form M-Al2O3-Al/S (where S is the superconductor of interest). The Al thickness is less than 100 Å and the Al/S interface is specularly transmitting. Quantitative values for ΔS(E) and ΔN(E) are obtained for S=Nb, N=Al.

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VL - 31

SP - 321

EP - 324

JO - Solid State Communications

JF - Solid State Communications

IS - 5

ER -

Quantitative proximity tunneling spectroscopy

Abstract

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