Publikation: Probing the conduction channels of gold atomic-size contacts : Proximity effect and multiple Andreev reflections
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2002
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Advances in Solid State Physics. 2002, 42, pp. 107-119. Available under: doi: 10.1007/3-540-45618-X_9
Zusammenfassung
We have investigated the electronic transport properties of Au quantum point contacts fabricated by the mechanically controllable breakjunction techniqueusing non-linearities in the current-voltage characteristics induced by the proximity effect (PE) of superconducting aluminium electrodes. The PE shows up also in an hysteric transition to the normal state when applying an external magnetic field. We find that the very smallest contact formed by a single atom between the electrodes contributes one channel to the transport as predeicted by different theoretical models. The analysis of the transport channels of retraceable opening and closing procedures gives additional evidence that the transport channels are determined by the properties of the central atom.
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SCHEER, Elke, Wolfgang BELZIG, Y. NAVEH, Cristián URBINA, 2002. Probing the conduction channels of gold atomic-size contacts : Proximity effect and multiple Andreev reflections. In: Advances in Solid State Physics. 2002, 42, pp. 107-119. Available under: doi: 10.1007/3-540-45618-X_9BibTex
@article{Scheer2002Probi-4709,
year={2002},
doi={10.1007/3-540-45618-X_9},
title={Probing the conduction channels of gold atomic-size contacts : Proximity effect and multiple Andreev reflections},
volume={42},
journal={Advances in Solid State Physics},
pages={107--119},
author={Scheer, Elke and Belzig, Wolfgang and Naveh, Y. and Urbina, Cristián}
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<dcterms:abstract xml:lang="eng">We have investigated the electronic transport properties of Au quantum point contacts fabricated by the mechanically controllable breakjunction techniqueusing non-linearities in the current-voltage characteristics induced by the proximity effect (PE) of superconducting aluminium electrodes. The PE shows up also in an hysteric transition to the normal state when applying an external magnetic field. We find that the very smallest contact formed by a single atom between the electrodes contributes one channel to the transport as predeicted by different theoretical models. The analysis of the transport channels of retraceable opening and closing procedures gives additional evidence that the transport channels are determined by the properties of the central atom.</dcterms:abstract>
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<dcterms:bibliographicCitation>Firts publ. in: Advances in Solid State Physics ; 42 (2002), pp. 107-119</dcterms:bibliographicCitation>
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