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arXiv · 1205.4975

Direct observation of Levy flight of holes in bulk n-InP

Serge Luryi·Oleg Semyonov·Arsen Subashiev·Zhichao Chen
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Abstract

We study the photoluminescence spectra excited at an edge side of n-InP slabs and observed from the broadside. In a moderately doped sample the intensity drops off as a power-law function of the distance from the excitation - up to several millimeters - with no change in the spectral shape.The hole distribution is described by a stationary Levy-flight process over more than two orders of magnitude in both the distance and hole concentration. For heavily-doped samples, the power law is truncated by free-carrier absorption. Our experiments are near-perfectly described by the Biberman-Holstein transport equation with parameters found from independent optical experiments.

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Serge Luryi, Oleg Semyonov, Arsen Subashiev, Zhichao Chen. 2012-05-22. Direct observation of Levy flight of holes in bulk n-InP. https://doi.org/10.1103/physrevb.86.201201

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