Abstract
The thermodynamic properties of specific heat, entropy, chemical potential, spin susceptibility and charge susceptibility are studied as functions of temperature and doping within the two-dimensional Hubbard model with various Quantities are calculated using the finite-temperature Lanczos method with additional phase averaging for a system of sites. Results show that the entropy at low T reaches a maximum near half-filling at the electron density in the whole regime of studied The pseudogap in becomes clearly pronounced for while shows a maximum close to half-filling. The relation of results to those within the model and to experiments is discussed.
- Received 12 November 2002
DOI:https://doi.org/10.1103/PhysRevB.67.085103
©2003 American Physical Society