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APS » Journals » Phys. Rev. B » Volume 53 » Issue 3
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Phys. Rev. B 53, 1022–1025 (1996)

Quantization effects in the conductance of metallic contacts at room temperature

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C. J. Muller
Department of Electrical Engineering, Yale University, P.O. Box 208284, New Haven, Connecticut 06520-8284

J. M. Krans
Kamerlingh Onnes Laboratory, University of Leiden, P.O. Box 9506, 2300 RA Leiden, The Netherlands

T. N. Todorov
Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH, England, United Kingdom

M. A. Reed
Department of Electrical Engineering, Yale University, P.O. Box 208284, New Haven, Connecticut 06520-8284

Received 30 May 1995; published in the issue dated 15 January 1996

We present measurements on conductance quantization in atomic scale metallic constrictions at room temperature. Conductance measurements as a function of constriction size reveal pronounced horizontal plateaus separated by sharp discrete steps. Most individual conductance plateaus are close to integer multiples of the fundamental conductance unit but definite deviations are also present. After averaging over many contact configurations, conductance quantization is seen clearly and more prominently than in similar recent low temperature measurements on the same metals. © 1996 The American Physical Society.

© 1996 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.53.1022
DOI:
10.1103/PhysRevB.53.1022
PACS:
73.40.Jn, 73.61.At
 
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