Abstract
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 are evaluated analytically and numerically for small, intermediate, and strong interactions using various approximation schemes. We find that follows the semiclassical law near but exhibits a striking -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 cobaltates.
3 More- Received 8 April 2008
DOI:https://doi.org/10.1103/PhysRevB.78.085105
©2008 American Physical Society