Critical properties of metal-insulator transition in low dimensions
Journal Article
·
· Journal of Low Temperature Physics
- Univ. of Tokyo (Japan)
Anomalous metallic states near the Mott insulator are analyzed in terms of the critical scaling toward the metal-insulator transition. Continuous transitions from a metal to the mott insulator are characterized either by the mass divergence as in the bi-component systems or the vanishing carrier number as in the valence bond systems. A set of critical exponents in these two cases is deduced from the scaling theory. The correlation exponent {nu} and the dynamic exponent z satisfy {nu} = 1/2d and z = 2d when the mass divergence in d dimensions, while {nu} = 1/2 and z = 2 if the carrier number vanishes. Crossovers between quantum critical regime and thermal critical regime inferred from this theory shed light on understanding experimental indications in high-T{sub c} cuprates and other strongly correlated systems.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 107622
- Report Number(s):
- CONF-9409365--
- Journal Information:
- Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 3-4 Vol. 99; ISSN JLTPAC; ISSN 0022-2291
- Country of Publication:
- United States
- Language:
- English
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