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Interference Effects Due to Commensurate Electron Trajectories and Topological Crossovers in (TMTSF)2ClO4

H. I. Ha·A. G. Lebed·M. J. Naughton
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Abstract

We report angle-dependent magnetoresistance measurements on (TMTSF)2ClO4 that provide strong support for a new macroscopic quantum phenomenon, the interference commensurate (IC) effect, in quasi-one dimensional metals. In addition to observing rich magnetoresistance oscillations, and fitting them with one-electron calculations, we observe a clear demarcation of field-dependent behavior at local resistance minima and maxima (versus field angle). Anticipated by a theoretical treatment of the IC effect in terms of Bragg reflections in the extended Brillouin zone, this behavior results from 1D-2D topological crossovers of electron wave functions as a function of field orientation.

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H. I. Ha, A. G. Lebed, M. J. Naughton. 2005-04-07. Interference Effects Due to Commensurate Electron Trajectories and Topological Crossovers in (TMTSF)2ClO4. https://doi.org/10.1103/physrevb.73.033107

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