Open AccessA theoretical survey of two-dimensional coherent spectroscopy in strongly-correlated electronic systems
Author(s) -
Zilong Li,
Yuan Wan
Publication year - 2021
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.70.20211556
Subject(s) - spectroscopy , terahertz radiation , terahertz spectroscopy and technology , physics , field (mathematics) , statistical physics , nonlinear system , range (aeronautics) , electronic structure , computer science , optics , computational physics , optoelectronics , materials science , condensed matter physics , quantum mechanics , mathematics , pure mathematics , composite material
Two-dimensional coherent spectroscopy (2DCS) diagnoses a material’s nonlinear optical response with multiple time variables, thus offering information that is inaccessible with conventional linear optical spectroscopy. The 2DCS in the infrared, visible, and ultraviolet frequency range has yielded fruitful results in chemistry and biology. In the terahertz (THz) frequency window, 2DCS has shown its promise in the study of strongly-correlated electronic systems. As a guide to this rapidly developing field, we survey the current status of the theory of THz-2DCS in strongly-correlated electronic systems. We then introduce the basic concepts and theoretical methods of 2DCS, and analyze the main characteristics of the two-dimensional spectra. Finally, we summarize our latest theoretical research in this field.