Break Junction Tunneling Spectroscopy of Single-Crystal Bismuth-Based High-Temperature Superconductors: Fid-Bau Portal

Fachinformationsdienst BAUdigital

A platform for research: civil engineering, architecture and urbanism

Break Junction Tunneling Spectroscopy of Single-Crystal Bismuth-Based High-Temperature Superconductors

Moreland, John / Chiang, C. K. / Swartzendruber, L. J.

Abstract We have measured the tunneling spectra of some high temperature superconducting crystal break junctions at 4 K. The samples were thin plates of Bi2SrCa2Cu2O8 compound. The tunneling spectra (conductance versus voltage) were not typical of BCS superconductor tunneling electrodes. The spectra of higher-resistance break-junction settings (R > 1 MΩ) show a tunneling gap on top of a linearly increasing conductance background signal. “Harmonic” dip features in the spectra of lower resistance break junction settings (R < 1 MΩ) indicated tunneling between multiple particles in the vicinity of the primary (highest resistance) contact of the junction. The dips occurred at about the same current but shifted in voltage when the resistance of the break junction was continuously adjusted to new settings.

Access

Check availability in my library

Order at Subito €

Page navigation

Document information

Export, share and cite

Break Junction Tunneling Spectroscopy of Single-Crystal Bismuth-Based High-Temperature Superconductors

Moreland, John / Chiang, C. K. / Swartzendruber, L. J.

Abstract We have measured the tunneling spectra of some high temperature superconducting crystal break junctions at 4 K. The samples were thin plates of Bi2SrCa2Cu2O8 compound. The tunneling spectra (conductance versus voltage) were not typical of BCS superconductor tunneling electrodes. The spectra of higher-resistance break-junction settings (R > 1 MΩ) show a tunneling gap on top of a linearly increasing conductance background signal. “Harmonic” dip features in the spectra of lower resistance break junction settings (R < 1 MΩ) indicated tunneling between multiple particles in the vicinity of the primary (highest resistance) contact of the junction. The dips occurred at about the same current but shifted in voltage when the resistance of the break junction was continuously adjusted to new settings.

Break Junction Tunneling Spectroscopy of Single-Crystal Bismuth-Based High-Temperature Superconductors

Moreland, John / Chiang, C. K. / Swartzendruber, L. J.

Abstract We have measured the tunneling spectra of some high temperature superconducting crystal break junctions at 4 K. The samples were thin plates of Bi2SrCa2Cu2O8 compound. The tunneling spectra (conductance versus voltage) were not typical of BCS superconductor tunneling electrodes. The spectra of higher-resistance break-junction settings (R > 1 MΩ) show a tunneling gap on top of a linearly increasing conductance background signal. “Harmonic” dip features in the spectra of lower resistance break junction settings (R < 1 MΩ) indicated tunneling between multiple particles in the vicinity of the primary (highest resistance) contact of the junction. The dips occurred at about the same current but shifted in voltage when the resistance of the break junction was continuously adjusted to new settings.

Access

Check availability in my library

Order at Subito €

Page navigation

Document information

Export, share and cite

Document information

Title:

Break Junction Tunneling Spectroscopy of Single-Crystal Bismuth-Based High-Temperature Superconductors

Contributors:

Moreland, John (author) / Chiang, C. K. (author) / Swartzendruber, L. J. (author)

Published in:

Advances in Cryogenic Engineering Materials ; 619-625

An International Cryogenic Materials Conference Publication ; 36

Publication date:

1990-01-01

Size:

7 pages

ISBN:

978-1-4613-9882-0 , 978-1-4613-9880-6

ISSN:

DOI:

https://doi.org/10.1007/978-1-4613-9880-6_80

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Break Junction , Tunnel Junction , Tunneling Spectrum , Tunneling Measurement , Tunneling Contact Chemistry , Biochemical Engineering , Characterization and Evaluation of Materials , Mechanical Engineering

Similar titles

Tunneling Spectroscopy of Novel Superconductors

Gray, K. E. / Hawley, M. E. / Moog, E. R. | Springer Verlag | 1987

Ac irreversibility line of bismuth-based high temperature superconductors

Mehdaoui, A. / Beille, J. / Berling, D. et al. | British Library Online Contents | 1997

Tunneling spectroscopy of anisotropic superconductors

Kashiwaya, S. / Tanaka, Y. / Koyanagi, M. et al. | British Library Conference Proceedings | 1996

Tunneling Spectroscopy of High Tc Oxide Superconductors with a Scanning Tunneling Microscope

Pan, S. / Ng, K. W. / Lozanne, A. L. | Springer Verlag | 1987

Use of Tunneling Microscopy and Spectroscopy for the Study of High T~c Superconductors

Gonzo, L. / Anderle, M. | British Library Online Contents | 1993