Observation of conductance quantization of ballistic metallic point contacts at room temperature

Zheng Gai, Yi He, Hongbin Yu, W. Yang

Research output: Contribution to journalArticle

49 Scopus citations

Abstract

We show here that the room-temperature conductance of the contacts formed with an ultrahigh vacuum scanning tunneling microscope by repeatedly pressing the tip into the clean and well-ordered Au(001) sample is sometimes but certainly not always equal to integer multiples of 2(Formula presented)/h, while the frequency distribution of conductance obtained from numerous such contacts has major peaks at and only at integer multiples of 2(Formula presented)/h, thereby providing direct evidence of conductance quantization of the room temperature ballistic metallic point contacts.

Original languageEnglish (US)
Pages (from-to)1042-1045
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume53
Issue number3
DOIs
StatePublished - Jan 1 1996
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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