Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published September 1990 | public
Journal Article

The role of disorder in highly correlated metals and insulators

Abstract

We present measurements of the electrical resistivity at a series of hydrostatic pressures, the ac magnetic susceptibility, and the low temperature specific heat for single crystals of titanium-doped and vanadium-deficient V_2O_3 on both sides of the metal-insulator transition. We concentrate on the experimental signatures of disorder as a way to probe both correlation and charge localization effects. Comparison is made to previous T→0 results obtained for the rare earth oxide La_(2-x)Sr_xCuO_4 and the doped semiconductor Si : P in the immediate vicinity of the transition.

Additional Information

Copyright © 1990 Published by Elsevier Inc. Received June 1, 1990. Dedicated to J. M. Honig on the occasion of his 65th birthday. We are indebted to J. M. Honig and J. Spalek for teaching us about the intricacy and beauty of the vanadium sesquioxide system. The experimental work reported here could not have been completed without the help of J. Yang. We are also grateful to P. Metcalf for reannealing the V_2O_3 crystals used in this research. The work at The University of Chicago was supported by NSF DMR 8816817.

Additional details

Created:
August 19, 2023
Modified:
March 5, 2024