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 language||English (US)|
|Number of pages||4|
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|State||Published - Jan 1 1996|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics