Photoconduction, hopping conductivity and other transport phenomena

Michael Wilkinson has long-standing interests in transport phenomena.  Recent highlights include an explanation for the anomalous exponents of photoconductive response of semiconductors, based upon the rate of electron-hole recombination being limited by hot-electron effects. The theory explains the predominance of observations of the anomalous exponent taking values close to 3/4 or 2/3.

Other recent developments include the definition and indentification of 'semilinear response', and a new model for hopping conduction processes based upon an analogy to repeatedly breaking a stick at its weakest point.

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