Ultrafast quenching of the exchange interaction in a Mott insulator

We investigate how fast and how effective photocarrier excitation can modify the exchange interaction J_{ex} in the prototype Mott-Hubbard insulator. We demonstrate an ultrafast quenching of J_{ex} both by evaluating exchange integrals from a time-dependent response formalism and by explicitly simul...

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Bibliographic Details

Published in:	Physical review letters Vol. 113; no. 5; p. 057201
Main Authors:	Mentink, J H, Eckstein, M
Format:	Journal Article
Language:	English
Published:	United States 01-08-2014
Subjects:	Exchange Filing Formalism Insulators Magnetic fields Precession Quenching Simulation
Online Access:	Get full text
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