Published December 9, 1991
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Journal Article
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New phase boundary in highly correlated, barely metallic V_2O_3
Abstract
We compare the magnetic and transport properties of the low-temperature metal in nonstoichiometric and compressed vanadium sesquioxide. Antiferromagnetic order is robust for the full range of vanadium vacancy concentrations, but it can be suppressed with modest hydrostatic pressures. The temperature-pressure phase diagram for V_2O_3 thus includes a new T=0 boundary between antiferromagnetic and paramagnetic metals. Furthermore, analysis of the T→0 diffusive metallic conductivity at the approach to the insulator-metal transition indicates a different role for correlations depending upon the means employed to effect the transition.
Additional Information
© 1991 The American Physical Society. Received 12 September 1991. We have benefited greatly from conversations with E. Abrahams and R. Bhatt. We are grateful to P. Metcalf for annealing the V_2O_3 crystals used in this research. T.F.R. thanks the Aspen Center for Physics where some of this work was accomplished. The work at The University of Chicago was supported by Grant No. NSF DMR 8816817. J.M.H. and J.S. were supported by MISCON Grant No. DE-FG02-90ER45427.Attached Files
Published - PhysRevLett.67.3440.pdf
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PhysRevLett.67.3440.pdf
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Additional details
- Alternative title
- New phase boundary in highly correlated, barely metallic V2O3
- Eprint ID
- 47016
- Resolver ID
- CaltechAUTHORS:20140707-163037924
- NSF
- DMR 8816817
- Department of Energy (DOE)
- DE-FG02-90ER45427
- Created
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2014-07-10Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field