Contribution of the spreading resistance to high-frequency rectification in metal-metal point contacts

R.W. van der Heijden, H.M. Swartjes, P. Wyder

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Abstract

High-frequency radiation detection by metal-metal point contacts is investigated as a function of bias voltage at far-infrared frequencies. Detection occurs through rectification due to a nonlinearity of the current-voltage characteristic. The relative contribution to the rectification due to an electron phonon scattering mechanism occurring in the bulk material (]]spreading resistance) is compared with other mechanisms. The spreading resistance nonlinearity was identified by measurements at liquid helium temperatures. For low contact resistances (≲50 Ω) this nonlinearity was generally dominant, for higher resistances it may occur in addition to and independently of the other mechanisms.

Original languageEnglish
Pages (from-to)1003-1011
Number of pages9
JournalJournal of Applied Physics
Volume55
Issue number4
DOIs
Publication statusPublished - 1984
Externally publishedYes

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