The Hall constant of correlated electrons: cluster calculation for Hubbard model

Mahesh, P. N. ; Shastry, B. S. (1996) The Hall constant of correlated electrons: cluster calculation for Hubbard model Physica B: Condensed Matter, 223-224 . pp. 501-505. ISSN 0921-4526

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0921-4526(96)00157-3

Abstract

We calculate the Hall constant RH(ω, T) for the high Tc materials La2-xSrxCuO4 and YBa2Cu3O7-x using the 2D Hubbard model, on a cluster of dimension (2 × 3). Close to half filling, at low temperatures and high frequency, we find that RH(ω) is electronlike in the weak correlation regime and in the strong correlation regime it is holelike with roughly 1/T + const form. At high frequencies, for La2-xSrxCuO4 we obtain a change in the sign of RH(ω) at x ≈ 0.3, which is in good agreement with the experimental data.

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Deposited On:28 Jul 2011 07:18
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