Environment-Assisted Tunneling as an Origin of the Dynes Density of States
Loading...
Access rights
© 2010 American Physical Society (APS). http://www.aps.org/
Journal Title
Journal ISSN
Volume Title
School of Science |
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
2010
Major/Subject
Mcode
Degree programme
Language
en
Pages
026803/1-4
Series
Physical Review Letters, Volume 105, Issue 2
Abstract
We show that the effect of a high-temperature environment in current transport through a normal metal–insulator–superconductor tunnel junction can be described by an effective density of states in the superconductor. In the limit of a resistive low-Ohmic environment, this density of states reduces into the well-known Dynes form. Our theoretical result is supported by experiments in engineered environments. We apply our findings to improve the performance of a single-electron turnstile, a potential candidate for a metrological current source.Description
Keywords
superconductors, current transport
Other note
Citation
Pekola, Jukka & Maisi, V. F. & Kafanov, S. & Chekurov, N. & Kemppinen, A. & Pashkin, Yu. A. & Saira, O.-P. & Möttönen, M. & Tsai, J. S. 2010. Environment-Assisted Tunneling as an Origin of the Dynes Density of States. Physical Review Letters. Volume 105, Issue 2. 026803/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.105.026803.