Hall effect on the triangular lattice

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We investigate the high frequency Hall effect on a two-dimensional triangular lattice with nearest-neighbor hopping and a local Hubbard interaction. The complete temperature and doping dependencies of the high-frequency Hall coefficient $R_H$ are evaluated analytically and numerically for small, intermediate, and strong interactions using various approximation schemes. We find that $R_H$ follows the semiclassical $1/qn^*$ law near T=0, but exhibits a striking $T$-linear behavior with an interaction- and doping-dependent slope at high temperature. We compare our results with previous theories as well as Hall measurements performed in the cobaltates.
11 pages, 10 figures

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/173606

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0804.1062
 http://arxiv.org/abs/0804.1062
 Physical Review B 78, 085105 (2008)
 doi:10.1103/PhysRevB.78.085105

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arXiv