2000 character limit reached
Magnetic moment suppression in Ba3CoRu2O9: hybridization effect (1306.3333v1)
Published 14 Jun 2013 in cond-mat.mtrl-sci and cond-mat.str-el
Abstract: An unusual orbital state was recently proposed to explain the magnetic and transport properties of Ba$3$CoRu$_2$O$_9$ [Phys. Rev. B. {\bf 85}, 041201 (2012)]. We show that this state contradicts to the first Hund's rule and does not realize in the system under consideration because of a too small crystal-field splitting in the $t{2g}$ shell. A strong suppression of the local magnetic moment in Ba$_3$CoRu$_2$O$_9$ is attributed to a strong hybridization between the Ru 4$d$ and O 2$p$ states.
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