Title

Many-body interaction in semiconductors probed with two-dimensional Fourier spectroscopy

Authors

Authors

M. Erementchouk; M. N. Leuenberger;L. J. Sham

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Phys. Rev. B

Keywords

DYNAMICS; Physics, Condensed Matter

Abstract

A particular difficulty in studying many-body interactions in a solid is the absence of an experimental technique that can directly probe their key characteristics. We show that two-dimensional (2D) Fourier spectroscopy provides an efficient tool for the measurement of critical parameters describing the effect of many-body interactions on the optical response of semiconductors. We develop the basic microscopic theory of 2D Fourier spectroscopy of semiconductors in the framework of the three-band model (heavy holes, light holes, and electrons). The theory includes many-body correlations nonperturbatively and can be generalized straightforwardly in order to describe 2D Fourier spectra obtained in atomic physics. We establish a relation between the 2D Fourier spectrum and the many-body correlations. It is shown, in particular, that 2D Fourier spectroscopy provides a principal possibility to establish experimentally the origin of the fast decay of the memory term describing the Coulomb interaction between heavy- and light-hole excitons. The theory is applied to an analysis of the available experimental data. Experiments providing more detailed information are suggested.

Journal Title

Physical Review B

Volume

76

Issue/Number

11

Publication Date

1-1-2007

Document Type

Article

Language

English

First Page

5

WOS Identifier

WOS:000249786400061

ISSN

1098-0121

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