Electro-spinon in one-dimensional Mott insulator
Strongly Correlated Electrons
2009-10-23 v2 Materials Science
Abstract
The low-energy dynamical optical response of dimerized and undimerized spin liquid states in a one-dimensional charge transfer Mott insulator is theoretically studied. An exact analysis is given for the low-energy asymptotic behavior using conformal field theory for the undimerized state. In the dimerized state, the infrared absorption due to the bound state of two solitons, i.e, the breather mode, is predicted with an accurate estimate for its oscillator strength, offering a way to detect experimentally the excited singlet state. Effects of external magnetic fields are also discussed.
Cite
@article{arxiv.0907.1135,
title = {Electro-spinon in one-dimensional Mott insulator},
author = {Hosho Katsura and Masahiro Sato and Takashi Furuta and Naoto Nagaosa},
journal= {arXiv preprint arXiv:0907.1135},
year = {2009}
}
Comments
5 pages, 2 figures, some typos are corrected