Nano Archive

Conductance oscillations in molecularly linked Au nanoparticle film-superconductor systems

Dunford, Jeffrey L. and Dhirani, Al-Amin (2008) Conductance oscillations in molecularly linked Au nanoparticle film-superconductor systems. NANOTECHNOLOGY, 19 (2). 025202.

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Official URL: http://dx.doi.org/10.1088/0957-4484/19/02/025202

Abstract

Charge transport across a disordered normal–superconductor (DN–S) interface was studied using a macroscopic, molecularly linked Au nanoparticle film as the DN component. Low-temperature conductance versus voltage and magnetic field exhibit zero-bias and zero-field peaks, respectively. Importantly, the latter typically exhibit superimposed oscillations. Such oscillations are rarely seen in other DN–S systems and are remarkable given their robustness in these macroscopic films and interfaces. A number of observations indicate that conductance peaks and oscillations arise due to a 'reflectionless tunnelling' process. Scattering length scales extracted from the data using a reflectionless tunnelling picture are consistent with literature values. Factors resulting in the observation of oscillations in this system are discussed.

Item Type:Article
Subjects:Material Science > Tunnelling and microscopic phenomena
Material Science > Nanostructured materials
ID Code:3538
Deposited By:Farnush Anwar
Deposited On:27 May 2009 11:50
Last Modified:27 May 2009 11:50

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