Harmonic mixing characteristics of metal-barrier-metal junctions as predicted by electron tunneling

Abstract
The bias dependence of the nonlinear mixing characteristics of metal‐barrier‐metal junction currents is deduced assuming an electron tunneling model. The difference‐frequency beat voltage at frequency ω1nω2, where n is an integer and ω1 and ω2 are the assumed frequencies of two induced currents, is found to have n zeros as the diode bias is varied. Recent experimental observations have demonstrated such characteristics.