Microscopic Scatterer Displacements Generate the1fResistance Noise of H in Pd

Abstract
The resistance changes generated by individual microscopic displacements due to dissolved hydrogen ions hopping between neighboring sites within palladium films create intense 1f noise at low temperature. Crossover to one-dimensional diffusion-mediated number-fluctuation noise occurs for T150 K. The measured resistance change per proton displacement is comparable to the resistance per proton as predicted by applicable quantum-interference theories.