ePrints@IIScePrints@IISc Home | About | Browse | Latest Additions | Advanced Search | Contact | Help

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

Mahesh, PN and Shastry, BS (1996) The Hall constant of correlated electrons: Cluster calculation for Hubbard model. In: Physica B, 223-22 (1-4). pp. 501-505.

[img] PDF
The_hall_constant.pdf
Restricted to Registered users only

Download (321Kb) | Request a copy

Abstract

We calculate the Hall constant $R_H(\omega,T)$ for the high $T_c$ materials $La_{2-x}Sr_xCuO_4$ and $YBa_2Cu_3O_{7-x}$ 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 $R_H(\omega)$ 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 $La_{2-x}Sr_xCuO_4$ we obtain a change in the sign of $R_H(\omega)$ at $x\sim 0.3$, which is in good agreement with the experimental data.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 03 Sep 2007
Last Modified: 19 Sep 2010 04:37
URI: http://eprints.iisc.ernet.in/id/eprint/10819

Actions (login required)

View Item View Item