Proximity Effect and Multiple Andreev Reflections in Gold Atomic Contacts

Scheer, Elke; Belzig, Wolfgang; Naveh, Yehuda; Devoret, Michel H.; Esteve, Daniel; Urbina, Cristián

Proximity Effect and Multiple Andreev Reflections in Gold Atomic Contacts

Dateien

Proximity_effect_and_multiple_andreev_reflections.pdfGröße: 168.2 KBDownloads: 542

Datum

2001

Autor:innen

Scheer, Elke

Belzig, Wolfgang

Naveh, Yehuda

Devoret, Michel H.

Esteve, Daniel

Urbina, Cristián

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review Letters. 2001, 86(2), pp. 284-287. Available under: doi: 10.1103/PhysRevLett.86.284

Zusammenfassung

We investigate the electronic transport properties of gold point contacts with superconducting aluminum leads. The modifications induced by the proximity effect in the quasiparticle density of states at the contact region are measured by tunnel spectroscopy. The theory of transport through multiple Andreev reflections is extended to incorporate these effects and used to determine the number and transmission coefficients of the conduction channels in the contact regime. We find that the smallest contacts, formed by one gold atom between the electrodes, contribute one single channel to the transport with variable transmission T between 0.1 and 1.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

SCHEER, Elke, Wolfgang BELZIG, Yehuda NAVEH, Michel H. DEVORET, Daniel ESTEVE, Cristián URBINA, 2001. Proximity Effect and Multiple Andreev Reflections in Gold Atomic Contacts. In: Physical Review Letters. 2001, 86(2), pp. 284-287. Available under: doi: 10.1103/PhysRevLett.86.284

BibTex

@article{Scheer2001Proxi-9417,
  year={2001},
  doi={10.1103/PhysRevLett.86.284},
  title={Proximity Effect and Multiple Andreev Reflections in Gold Atomic Contacts},
  number={2},
  volume={86},
  journal={Physical Review Letters},
  pages={284--287},
  author={Scheer, Elke and Belzig, Wolfgang and Naveh, Yehuda and Devoret, Michel H. and Esteve, Daniel and Urbina, Cristián}
}

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