Session Z36: Focus Session: Bulk Properties of Complex Oxides -- 4d and 5d Systems
11:15 AM–2:15 PM, Friday, March 19, 2010
Room: E146
Sponsoring Units:
DMP GMAG
Chair: Rongying Jin, Louisiana State University
Abstract ID: BAPS.2010.MAR.Z36.4
Abstract: Z36.00004 : Pressure-Induced Insulating State in Ba$_{1-x}$RE$_{x}$IrO$_{3}$ (RE = Gd, Eu) Single Crystals
11:51 AM–12:03 PM
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Abstract 
Authors:
O.B. Korneta
(Center for Advanced Materials, University of Kentucky)
S. Chikara
(Center for Advanced Materials, University of Kentucky)
G. Cao
(Center for Advanced Materials, University of Kentucky)
L.E. DeLong
(Center for Advanced Materials, University of Kentucky)
P. Schlottmann
(Department of Physics, Florida State University)
S. Parkin
(Department of Chemistry, University of Kentucky)
BaIrO$_{3}$ is a novel insulator with coexistent weak ferromagnetism, charge and spin density wave. Dilute RE doping for Ba induces a metallic state, whereas application of modest pressure ($\le $ 12.1 kbar) readily restores an insulating state characterized by a three-order-of-magnitude increase of resistivity. A pressure-induced insulating state is not common, and has never been observed in 5d-electron materials. The profoundly dissimilar responses of the ground state to light doping and low hydrostatic pressures signal an unusual, delicate interplay between structural and electronic degrees of freedom in BaIrO$_{3}$.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2010.MAR.Z36.4