Experimental phase shifts in magnetophonon resonance

Abstract

Extremal positions in experimental recordings of the transverse magnetophonon resonance effect are usually phase-shifted with respect to magnetic field from the simple expression omega _c= omega _opt/n. This phase shift arises from the variation in amplitude of the resonance peaks, and is examined as a feature of both differentiated and undifferentiated recordings of the phenomenon; it is greater in the former case. Tables are presented that quote this shift both for power law and exponential amplitude functions.