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Dynamical signature of the Mott-Hubbard transition in Ni(S,Se)_2

Husmann, A. and Jin, D. S. and Zastavker, Y. V. and Rosenbaum, T. F. and Yao, X. and Honig, J. M. (1996) Dynamical signature of the Mott-Hubbard transition in Ni(S,Se)_2. Science, 274 (5294). pp. 1874-1876. ISSN 0036-8075. doi:10.1126/science.274.5294.1874.

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The transition metal chalcogenide Ni(S,Se)_2 is one of the few highly correlated, Mott-Hubbard systems without a strong first-order structural distortion that normally cuts off the critical behavior at the metal-insulator transition. The zero-temperature (T) transition was tuned with pressure, and significant deviations were found near the quantum critical point from the usual T^(1/2) behavior of the conductivity characteristic of electron-electron interactions in the presence of disorder. The transport data for pressure and temperature below 1 kelvin could be collapsed onto a universal scaling curve.

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Alternate Title:Dynamical signature of the Mott-Hubbard transition in Ni(S,Se)2
Additional Information:© 1996 American Association for the Advancement of Science. 22 July 1996; accepted 22 October 1996. We are grateful to D. Belitz for sharing his results prior to publication and to E. Shung for helpful discussions. The work at the University of Chicago was supported by NSF grant DMR95-07873. Y.V.Z. acknowledges support from the NSF REU Program. The work at Purdue University was supported by NSF grant DMR92-22986.
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Issue or Number:5294
Record Number:CaltechAUTHORS:20140707-163033475
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:46987
Deposited By: George Porter
Deposited On:14 Jul 2014 17:42
Last Modified:10 Nov 2021 17:32

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