S.W. Tozer, A.W. Kleinsasser, et al.
Physical Review Letters
Paper
Exchange-induced autoionization in Eu-Rich EuO
Abstract
Below the Curie temperature, with increasing magnetic order, Eu-rich EuO shows both a change of 0.15 mm/sec in the Eu151 isomer shift and an insulator-metal transition with a resistivity change of more than 13 orders of magnitude. These effects are interpreted on the basis of an exchange-induced configurational change (autoionization) of two electrons trapped at an oxygen vacancy. © 1971 The American Physical Society.
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