Conductance fluctuations in metallic nanogaps made by electromigration

We report on low temperature conductance measurements of gold nanogaps fabricated by controlled electromigration. Fluctuations of the conductance due to quantum interferences and depending both on bias voltage and magnetic field are observed. By analyzing the voltage and magnetoconductance correlati...

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Bibliographic Details
Published inarXiv.org
Main Authors Petit, P, Anthore, A, Della Rocca, M L, Lafarge, P
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 23.11.2010
Subjects
Correlation analysis
Electric potential
Electromigration
Electron trajectories
Gold
Phase coherence
Physics - Mesoscale and Nanoscale Physics
Resistance
Variation
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Summary:We report on low temperature conductance measurements of gold nanogaps fabricated by controlled electromigration. Fluctuations of the conductance due to quantum interferences and depending both on bias voltage and magnetic field are observed. By analyzing the voltage and magnetoconductance correlation functions we determine the type of electron trajectories generating the observed quantum interferences and the effective characteristic time of phase coherence in our device.
ISSN:2331-8422
DOI:10.48550/arxiv.1011.5144