Optimal doping and entropic origin of giant thermopower in doped Mott insulators

TL;DR

This paper initially aimed to explore the origin of giant thermopower in doped Mott insulators through optimal doping and entropy considerations, but was withdrawn due to incorrect results from an inadequate impurity solver.

Contribution

The authors developed a new impurity solver and revised the thermopower analysis, leading to different conclusions about the thermoelectric properties of doped Mott insulators.

Findings

Development of a new impurity solver for strong interactions

Revised thermopower results with different conclusions

Insights into the entropic origin of thermopower

Abstract

This paper has been withdrawn by the authors because the results were incorrect due to the use of an impurity solver that fails at large interaction strength and above half-filling. This led, first, to the development of a new impurity solver (arXiv:1202.5814 or Phys.Rev. B 86, 085133 (2012)) and, second, to a complete revision of the thermopower results with different conclusions. Therefore a new paper on thermopower was submitted (arXiv:1209.4349) and the present one withdrawn.