Cy. Lee et Pa. Deymier, 2-ELECTRON STATES IN BA0.6K0.4BIO3 VIA DISCRETIZED PATH-INTEGRAL MOLECULAR-DYNAMICS, Solid state communications, 102(9), 1997, pp. 653-657
We report for the calculation of the electronic singlet and triplet st
ates in Ba0.6K0.4BiO3 by a discretized path integral molecular dynamic
s which includes quantum indistinguishability. We show that two nonpol
arized electrons form a bound complex within a single Bi ion. Two pola
rized electrons are located on different Bi sites. The singlet-triplet
splitting is found to be similar to 0.6 eV. (C) 1997 Published by Els
evier Science, Ltd.