info:eu-repo/semantics/article
Asymmetry between the electron- and hole-doped Mott transition in the periodic Anderson model
Fecha
2009-01Registro en:
Sordi, G.; Amaricci, A.; Rozenberg, Marcelo Javier; Asymmetry between the electron- and hole-doped Mott transition in the periodic Anderson model; American Physical Society; Physical Review B: Condensed Matter and Materials Physics; 80; 3; 1-2009; 35129
1098-0121
CONICET Digital
CONICET
Autor
Sordi, G.
Amaricci, A.
Rozenberg, Marcelo Javier
Resumen
We study the doping-driven Mott metal-insulator transition (MIT) in the periodic Anderson model set in the Mott-Hubbard regime. A striking asymmetry for electron- or hole-driven transitions is found. The electron-doped MIT at larger U is similar to the one found in the single band Hubbard model, with a first-order character due to coexistence of solutions. The hole-doped MIT, in contrast, is second order and can be described as the delocalization of Zhang-Rice singlets. © 2009 The American Physical Society.