Published March 13, 2000
| Published
Journal Article
Open
Nonlinear electric field effects at a continuous Mott-Hubbard transition
Abstract
We characterize the non-Ohmic portion of the conductivity at temperatures T < 1 K in the highly correlated transition metal chalcogenide Ni(S, Se)_2. Pressure tuning of the T = 0 metal-insulator transition reveals the influence of the quantum critical point and permits a direct determination of the dynamical critical exponent z = 2.7_(-0.4)^(+0.3) Within the framework of finite temperature scaling, we find that the spatial correlation length exponent ν and the conductivity exponent μ differ.
Additional Information
© 2000 The American Physical Society. Received 27 September 1999. We are grateful to C. Roeser for expert technical help and to R. N. Bhatt and S. M. Girvin for illuminating discussions. T. F. R. thanks the Aspen Center for Physics where some of this work was performed. The work at the University of Chicago was supported by NSF No. DMR9801824; that at Purdue was supported by NSF No. DMR9612130.Attached Files
Published - PhysRevLett.84.2465.pdf
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PhysRevLett.84.2465.pdf
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Additional details
- Eprint ID
- 46975
- Resolver ID
- CaltechAUTHORS:20140707-163031933
- NSF
- DMR9801824
- NSF
- DMR9612130
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2014-07-10Created from EPrint's datestamp field
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2021-11-10Created from EPrint's last_modified field