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Abstract: We investigate the high frequency Hall effect on a two-dimensional triangularlattice with nearest-neighbor hopping and a local Hubbard interaction. Thecomplete temperature and doping dependencies of the high-frequency Hallcoefficient $R H$ are evaluated analytically and numerically for small,intermediate, and strong interactions using various approximation schemes. Wefind that $R H$ follows the semiclassical $1-qn^*$ law near T=0, but exhibits astriking $T$-linear behavior with an interaction- and doping-dependent slope athigh temperature. We compare our results with previous theories as well as Hallmeasurements performed in the cobaltates.



Autor: Gladys León, Christophe Berthod, Thierry Giamarchi, Andrew Millis

Fuente: https://arxiv.org/







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