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Electrical Modulation of Superconducting Critical Temperature in Liquid-Gated Thin Niobium Films
- Source :
- Appl. Phys. Lett. 105, 012601 (2014)
- Publication Year :
- 2014
-
Abstract
- We demonstrate that the superconducting critical temperature (Tc) of thin niobium films can be electrically modulated in a liquid-gated geometry device. Tc can be suppressed and enhanced by applying positive and negative gate voltage, respectively, in a reversible manner within a range of about 0.1 K. At a fixed temperature below Tc, we observed that the superconducting critical current can be modulated by gate voltage. This result suggests a possibility of an electrically-controlled switching device operating at or above liquid helium temperature, where superconductivity can be turned on or off solely by the applied gate voltage.<br />Comment: 7 pages, 5 figures
- Subjects :
- Condensed Matter - Mesoscale and Nanoscale Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Appl. Phys. Lett. 105, 012601 (2014)
- Publication Type :
- Report
- Accession number :
- edsarx.1407.4026
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1063/1.4890085