Photoinducing a Mott Insulator in a Charge-Density-Wave System

摘要

A quasi-one-dimensional halogen-bridged Pd complex, [Pd(chxn){sub}2][Pd(chxn){sub}2Br{sub}2]Br{sub}4, is explored theoretically to demonstrate its possibility for a ultrafast photoinduced phase transition from a charge-density-wave state to a Mott-insulator state. Charge excitations in the former smoothly lead to spin excitations in the latter, with no energy barrier.