Single-Fluxon controlled resistance switching in centimeter-long superconducting Gallium-Indium eutectic nanowires


Zhao, Weiwei, Bischof, Jesse L., Hutasoit, Jimmy, Liu, Xin, Fitzgibbons, Thomas C., Hayes, John R., Sazio, Pier J.A., Liu, Chaoxing, Jain, Jainendra K., Badding, John V. and Chan, M.H.W. (2014) Single-Fluxon controlled resistance switching in centimeter-long superconducting Gallium-Indium eutectic nanowires Nano Letters, 15, (1), pp. 153-158. (doi:10.1021/nl503283e).

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Description/Abstract

The ability to manipulate a single quantum object, such as a single electron or a single spin, to induce a change in a macroscopic observable lies at the heart of nanodevices of the future. We report an experiment wherein a single superconducting flux quantum, or a fluxon, can be exploited to switch the resistance of a nanowire between two discrete values. The experimental geometry consists of centimeter-long nanowires of superconducting Ga-In eutectic, with spontaneously formed Ga nanodroplets along the length of the nanowire. The nonzero resistance occurs when a Ga nanodroplet traps one or more superconducting fluxons, thereby driving a Josephson weak-link created by a second nearby Ga nanodroplet normal. The fluxons can be inserted or flipped by careful manipulation of the magnetic field or temperature to produce one of many metastable states of the system.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1021/nl503283e
ISSNs: 1530-6984 (print)
Related URLs:
Subjects:
Organisations: Optoelectronics Research Centre
ePrint ID: 374984
Date :
Date Event
November 2014Accepted/In Press
2015Published
Date Deposited: 09 Mar 2015 11:16
Last Modified: 17 Apr 2017 06:33
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/374984

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