Diffusion of photo-excited holes in viscous electron fluid

Autor:	Yu. A. Pusep, M. D. Teodoro, V. Laurindo, E. R. Cardozo de Oliveira, G. M. Gusev, A. K. Bakarov
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics FOTOLUMINESCÊNCIA Mesoscale and Nanoscale Physics (cond-mat.mes-hall) FOS: Physical sciences General Physics and Astronomy
Zdroj:	Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP
Popis:	The diffusion of photo-generated holes is studied in a high-mobility mesoscopic GaAs\ channel where electrons exhibit hydrodynamic properties. It is shown that the injection of holes into such an electron system leads to the formation of a hydrodynamic three-component mixture consisted of electrons and photo-generated heavy and light holes. The obtained results are analyzed within the framework of ambipolar diffusion, which reveals characteristics of a viscous flow. Both hole types exhibit similar hydrodynamic characteristics. In such a way the diffusion lengths, ambipolar diffusion coefficient and the effective viscosity of the electron-hole system are determined. 6 pages, 4 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::727ba7fcf4b79b1e12c42bf32c70daaf http://arxiv.org/abs/2204.00041 Zobrazit plný text záznamu