TY - JOUR
T1 - Pressure-induced insulating state in Ba1-x Rx IrO3 ( R=Gd, Eu) single crystals
AU - Korneta, O. B.
AU - Chikara, S.
AU - Parkin, S.
AU - Delong, L. E.
AU - Schlottmann, P.
AU - Cao, G.
PY - 2010/1/5
Y1 - 2010/1/5
N2 - BaIrO3 is an unusual insulator with coexistent weak ferromagnetism, charge- and spin-density waves. Dilute rare-earth doping (e.g., 4%) for Ba induces a metallic state whereas application of modest pressure (≤12.1 kbar) readily restores an insulating state characterized by a three order of magnitude increase in resistivity. Since pressure generally increases orbital overlap and broadens energy bands, a pressure-induced insulating state is not commonplace. 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 BaIrO3.
AB - BaIrO3 is an unusual insulator with coexistent weak ferromagnetism, charge- and spin-density waves. Dilute rare-earth doping (e.g., 4%) for Ba induces a metallic state whereas application of modest pressure (≤12.1 kbar) readily restores an insulating state characterized by a three order of magnitude increase in resistivity. Since pressure generally increases orbital overlap and broadens energy bands, a pressure-induced insulating state is not commonplace. 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 BaIrO3.
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U2 - 10.1103/PhysRevB.81.045101
DO - 10.1103/PhysRevB.81.045101
M3 - Article
AN - SCOPUS:77954828949
SN - 1098-0121
VL - 81
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 4
M1 - 045101
ER -