skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Microwave resonant activation in hybrid single-gap/two-gap Josephson tunnel junctions

Authors:
ORCiD logo [1]; ORCiD logo [2];  [2]; ORCiD logo [3];  [3]; ORCiD logo [4];  [4];  [4];  [5]
  1. Penn State Harrisburg, Middletown, Pennsylvania 17057, USA
  2. Drexel University, Philadelphia, Pennsylvania 19104, USA
  3. The Pennsylvania State University, University Park, Pennsylvania 16802, USA
  4. Temple University, Philadelphia, Pennsylvania 19122, USA
  5. University of the Sciences, Philadelphia, Pennsylvania 19104, USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1328577
Grant/Contract Number:
DEFG02- 08ER46531
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 120; Journal Issue: 12; Related Information: CHORUS Timestamp: 2018-03-09 12:05:05; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics
Country of Publication:
United States
Language:
English

Citation Formats

Carabello, Steven, Lambert, Joseph G., Mlack, Jerome, Dai, Wenqing, Li, Qi, Chen, Ke, Cunnane, Daniel, Xi, X. X., and Ramos, Roberto C. Microwave resonant activation in hybrid single-gap/two-gap Josephson tunnel junctions. United States: N. p., 2016. Web. doi:10.1063/1.4963651.
Carabello, Steven, Lambert, Joseph G., Mlack, Jerome, Dai, Wenqing, Li, Qi, Chen, Ke, Cunnane, Daniel, Xi, X. X., & Ramos, Roberto C. Microwave resonant activation in hybrid single-gap/two-gap Josephson tunnel junctions. United States. doi:10.1063/1.4963651.
Carabello, Steven, Lambert, Joseph G., Mlack, Jerome, Dai, Wenqing, Li, Qi, Chen, Ke, Cunnane, Daniel, Xi, X. X., and Ramos, Roberto C. Wed . "Microwave resonant activation in hybrid single-gap/two-gap Josephson tunnel junctions". United States. doi:10.1063/1.4963651.
@article{osti_1328577,
title = {Microwave resonant activation in hybrid single-gap/two-gap Josephson tunnel junctions},
author = {Carabello, Steven and Lambert, Joseph G. and Mlack, Jerome and Dai, Wenqing and Li, Qi and Chen, Ke and Cunnane, Daniel and Xi, X. X. and Ramos, Roberto C.},
abstractNote = {},
doi = {10.1063/1.4963651},
journal = {Journal of Applied Physics},
number = 12,
volume = 120,
place = {United States},
year = {Wed Sep 28 00:00:00 EDT 2016},
month = {Wed Sep 28 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1063/1.4963651

Save / Share:
  • It is explicitly shown that the spatial distribution of the energy gap in a superconducting tunnel junction can be determined quantitatively. This is verified experimentally using semiconductor-insulator-semiconductor tunnel junctions where gap inhomogeneity is de- liberately induced with patterned laser illumination.
  • Taking into account the presence of multimode oscillation, self-resonant current steps in current-voltage characteristics of rectangular Josephson tunnel junctions are studied theoretically. An expression for the zero-field step is obtained, which is shown to be significantly different from previous theories assuming a single-mode oscillation. For a long junction with a length larger than the Josephson penetration depth, the present theory gives the magnetic field dependence of the Fiske step, whose shape is considerably changed from the one calculated from Kulik's theory. The present theory well explains the experimental results for the zero-field step and the Fiske step of long junctions,more » which could not be explained by the previous theories.« less
  • A laser scanning technique has been used to obtain the Josephson current distributions in two-dimensional Josephson tunnel junctions. For zero external magnetic field, current distributions of cross-type junctions using symmetric and asymmetric feed configurations are found to be qualitatively different from the published theoretical results. In addition the current distributions in various magnetic fields are also presented.
  • A new method is introduced for imaging of the standing-wave patterns inside superconducting tunnel junctions coupled to an external microwave source. The method is based on electron-beam scanning of the tunnel junctions using the concept of low-temperature scanning electron microscopy. For two different junction geometries, results are shown which confirm the established models for the propagation of microwaves inside superconducting tunnel junctions.