S. G. Ovchinnikov, B. A. Gizhevskii, N. V. Kazak, V. V. Rudenko, A. V. Telegin, “Experimental observation of the virtual electronic states of a mott-Hubbard insulator FeBO$_3$ in infrared absorption spectra”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2009, Volume 90, Issue 7,Pages <nobr>569

This article is cited in 6 papers

CONDENSED MATTER

Experimental observation of the virtual electronic states of a mott-Hubbard insulator FeBO$_3$ in infrared absorption spectra

S. G. Ovchinnikov^ab, B. A. Gizhevskii^c, N. V. Kazak^a, V. V. Rudenko^a, A. V. Telegin^c

^a L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences
^b Siberian Federal University
^c Institute of Metal Physics, Ural Division of the Russian Academy of Sciences

Abstract: A number of new peaks close to the previously predicted energies of virtual electronic states [S.G. Ovchinnikov and V.N. Zabluda, Zh. Eksp. Teor. Fiz. 125, 150 (2004) [JETP 98, 135 (2004)]] have been observed in the absorption spectra of FeBO₃ single crystals in the infrared range. The 0.27-eV peak was absent in the scheme presented in the work cited above and, to explain it, a multielectron theory taking into account the ² T ₂ low-spin term of the Fe³⁺ ion has been developed.

PACS: 71.10.Fd, 71.27.+a, 78.30.Hv

Received: 27.07.2009