Dramatic Switching of Magnetic Exchange in a Classic Transition Metal Oxide: Evidence for Orbital Ordering

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.507· OSTI ID:439083

Bao, W; Broholm, C ^[1]; Bao, W ^[2]; Broholm, C ^[3]; Aeppli, G ^[4]; Dai, P ^[5]; Honig, J; Metcalf, P ^[6]

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1. Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218 (United States)
2. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
3. National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
4. NEC, 4 Independence Way, Princeton, New Jersey 08540 (United States)
5. Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
6. Purdue University, West Lafayette, Indiana 47907 (United States)

Spin correlations in metallic and insulating phases of V{sub 2}O{sub 3} and its derivatives are investigated using magnetic neutron scattering.Metallic samples have incommensurate spin correlations varying little with hole doping. Paramagnetic insulating samples have spin correlations only among near neighbors. The transition from either of these phases into the low temperature insulating antiferromagnetic phase is accompanied by an abrupt change of dynamic magnetic short range order. Our results support the idea that the transition into the antiferromagnetic insulator is also an orbital ordering transition. {copyright} {ital 1997} {ital The American Physical Society}

• Research Organization: Brookhaven National Laboratory
• DOE Contract Number: AC02-76CH00016; AC05-84OR21400; FG02-90ER45427
• OSTI ID: 439083
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 3 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANTIFERROMAGNETISM
BNL
EXCHANGE INTERACTIONS
NEUTRON DIFFRACTION
ORNL
PARAMAGNETISM
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
SPIN ORIENTATION
TRANSITION ELEMENT COMPOUNDS
VANADIUM OXIDES