Eur. Phys. J. B (2013) 86: 41
https://doi.org/10.1140/epjb/e2012-30621-1

Regular Article

Theory of spatiotemporally resolved spectroscopy for phase-separation dynamics in electron-hole systems^*

Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan

^a e-mail: aishikawa@yamanashi.ac.jp

Received: 16 July 2012
Received in final form: 6 November 2012
Published online: 6 February 2013

Abstract

Phase separation such as the formation of electron-hole droplets has been observed in semiconductor electron-hole systems. In such conventional experiments, the information averaged in real space was obtained. However, in recent years, optical-near-field techniques have enabled us to acquire spatial information. In this study, I propose a theoretical formulation of spatiotemporal dynamics and spatiotemporally resolved optical response of the gas-liquid phase separation in electron-hole systems. In addition, the nature of the nonequilibrium open system is an essential point in electron-hole systems. Therefore, I investigate the effect of the finite lifetime of electron-hole pairs on phase-separation dynamics.