RT Journal Article
T1 Orbital, charge, and spin couplings in Ru 25+O9 dimers of Ba3CoRu2O9
A1 Zhou, Haidong
A1 Kiswandhi, Andhika
A1 Barlas, Yafis
A1 Brooks, James
A1 Siegrist, Theo Max
A1 Li, G.
A1 Balicas, Luis
A1 Cheng, J. G.
A1 Rivadulla Fernández, José Francisco
AB e magnetic, transport, and structural properties of cold-pressed Ba3CoRu2O9 show (i) an antiferromagnetic transition, (ii) a semiconductor-semiconductor electronic transition where the resistivity is dominated by the electron hopping between the Ru25+O9 dimers with itinerant Ru electrons at high temperatures, and (iii) a hexagonal to orthorhombic structural phase transition. All three transitions occur at 93 K and are related to the Ru5+ ions in the Ru2O9 dimers. The Ru-O bond distortion below 93 K further indicates a possible orbital ordering for Ru5+ ions in isolated Ru2O9 dimers, which accounts for the strong orbital, charge, and spin couplings
PB APS Physics
SN 2469-9950
YR 2012
FD 2012
LK http://hdl.handle.net/10347/17038
UL http://hdl.handle.net/10347/17038
LA eng
NO Zhou, H., Kiswandhi, A., Barlas, Y., Brooks, J., Siegrist, T., & Li, G. et al. (2012). Orbital, charge, and spin couplings in Ru25+O9dimers of Ba3CoRu2O9. Physical Review B, 85(4). doi: 10.1103/physrevb.85.041201
NO This work is supported by NSF-DMR-0654118 and the State of Florida. J.S.B. and A.K. acknowledge support from NSF-DMR-1005293
DS Minerva
RD 24 abr 2026