Asymmetry between the electron- and hole-doped Mott transition in the periodic Anderson model

G. Sordi; A. Amaricci; M. J. Rozenberg

doi:10.1103/PhysRevB.80.035129

Asymmetry between the electron- and hole-doped Mott transition in the periodic Anderson model

G. Sordi, A. Amaricci, M. J. Rozenberg

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	ARTN 035129
Number of pages	15
Journal	Physical Review B
Volume	80
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.80.035129
Publication status	Published - Jul 2009

Keywords

MAGNETIC-IMPURITIES
INFINITE DIMENSIONS
MEAN-FIELD THEORY
FILLED HUBBARD-MODEL
COHERENCE
PHOTOEMISSION
HEAVY FERMIONS
METAL-INSULATOR TRANSITIONS
LANDAU THEORY
FERMION SYSTEMS

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10.1103/PhysRevB.80.035129

http://link.aps.org/doi/10.1103/PhysRevB.80.035129

Cite this

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title = "Asymmetry between the electron- and hole-doped Mott transition in the periodic Anderson model",

abstract = "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.",

keywords = "MAGNETIC-IMPURITIES, INFINITE DIMENSIONS, MEAN-FIELD THEORY, FILLED HUBBARD-MODEL, COHERENCE, PHOTOEMISSION, HEAVY FERMIONS, METAL-INSULATOR TRANSITIONS, LANDAU THEORY, FERMION SYSTEMS",

author = "G. Sordi and A. Amaricci and Rozenberg, {M. J.}",

year = "2009",

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language = "English",

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journal = "Physical Review B",

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AU - Sordi, G.

AU - Amaricci, A.

AU - Rozenberg, M. J.

PY - 2009/7

Y1 - 2009/7

N2 - 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.

AB - 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.

KW - MAGNETIC-IMPURITIES

KW - INFINITE DIMENSIONS

KW - MEAN-FIELD THEORY

KW - FILLED HUBBARD-MODEL

KW - COHERENCE

KW - PHOTOEMISSION

KW - HEAVY FERMIONS

KW - METAL-INSULATOR TRANSITIONS

KW - LANDAU THEORY

KW - FERMION SYSTEMS

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DO - 10.1103/PhysRevB.80.035129

M3 - Article

SN - 1098-0121

VL - 80

JO - Physical Review B

JF - Physical Review B

IS - 3

M1 - ARTN 035129

ER -