A new method of superconducting energy gap spectroscopy

G. A. Gogadze; V. M. Svistunov; R. Aoki; H. Murakami; M. Shirai

doi:10.1016/S0921-4534(97)01875-3

A new method of superconducting energy gap spectroscopy

G. A. Gogadze, V. M. Svistunov, R. Aoki, H. Murakami, M. Shirai

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

Abstract

The phenomenon of field emission from a superconductor is studied. The total-energy distribution of the emitted electrons and that associated with the velocity component normal to the emitting surface are calculated. Both these distribution functions differ essentially from those for the normal state near the Fermi level. A spectroscopic method permitting the measurement of the plateau in the energy distribution of the field-emitted electrons is proposed. The size of this plateau gives directly the value of the energy gap.

Original language	English
Pages (from-to)	232-238
Number of pages	7
Journal	Physica C: Superconductivity and its applications
Volume	297
Issue number	3-4
DOIs	https://doi.org/10.1016/S0921-4534(97)01875-3
Publication status	Published - 1998 Mar 10
Externally published	Yes

Keywords

Distribution function
Energy gap
Field emission
Gap spectroscopy

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/S0921-4534(97)01875-3

Cite this

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keywords = "Distribution function, Energy gap, Field emission, Gap spectroscopy",

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AU - Gogadze, G. A.

AU - Svistunov, V. M.

AU - Aoki, R.

AU - Murakami, H.

AU - Shirai, M.

N1 - Funding Information: One of the authors (G.A.G.) is very indebted for a valuable discussion with I.K. Yanson and A.N. Omelyanchouk. This work has been supported by the Telecommunications Advancement Organization of Japan. Copyright: Copyright 2018 Elsevier B.V., All rights reserved.

PY - 1998/3/10

Y1 - 1998/3/10

N2 - The phenomenon of field emission from a superconductor is studied. The total-energy distribution of the emitted electrons and that associated with the velocity component normal to the emitting surface are calculated. Both these distribution functions differ essentially from those for the normal state near the Fermi level. A spectroscopic method permitting the measurement of the plateau in the energy distribution of the field-emitted electrons is proposed. The size of this plateau gives directly the value of the energy gap.

AB - The phenomenon of field emission from a superconductor is studied. The total-energy distribution of the emitted electrons and that associated with the velocity component normal to the emitting surface are calculated. Both these distribution functions differ essentially from those for the normal state near the Fermi level. A spectroscopic method permitting the measurement of the plateau in the energy distribution of the field-emitted electrons is proposed. The size of this plateau gives directly the value of the energy gap.

KW - Distribution function

KW - Energy gap

KW - Field emission

KW - Gap spectroscopy

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A new method of superconducting energy gap spectroscopy

Abstract

Keywords

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