Solitons in the Crossover between Band Insulator and Mott Insulator: Application to TTF-Chloranil under Pressure

Abstract

Based on the Phase Hamiltonian, two types of solitons are found to exist in the crossover region between band insulator and Mott insulator in one-dimension. Both of these solitons have fractional charges but with different spins, zero and 1/2, respectively. The results are in accord with the experimental results by Kanoda et al. for TTF-Chloranil under pressure.

Submitted to J. Phys. Soc. Japan, 8 pages, 4 figures

References in corpus (1)

• Ground-state phase diagram of the one-dimensional half-filled extended Hubbard model

Cited by in corpus (4)

• Separation of Charge Instability and Lattice Symmetry Breaking in an Organic Ferroelectric
• Phase Competition, Solitons, and Domain Walls in Neutral-Ionic Transition Systems
• Fate of a soliton matter upon symmetry-breaking ferroelectric order
• Experimental Verification of Charge Soliton Excitations in the Ionic Mott-Peierls Ferroelectric, TTF-CA