Pseudogap-driven Hall effect sign reversal

Details Pseudogap-driven Hall effect sign reversal Pseudogap-driven Hall effect sign reversal

2008-03-13

arxiv.org/abs/0803.1979v1

Phys. Rev. Lett. 100, 236402 (2008)

Physics

Condensed Matter

Superconductivity

Scientific paper

We present a calculation of the Hall coefficient in 2H-TaSe2 and 2H-Cu0.2NbS2 relied on the photoemission data and compare the results to transport observations. The approach, based on the solution of the semiclassical Boltzmann equation in the isotropic tau-approximation yields high-temperature Hall coefficient consistent with the one measured directly. Taking into account the opening of the pseudogap and redistribution of the spectral weight, recently observed in angle resolved photoemission spectra of 2H-TaSe2, allows us to reproduce the temperature dependence of the Hall coefficient including prominent sign change with no adjustable parameters.

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