Bad-Metal Behavior Reveals Mott Quantum Criticality in Doped Hubbard Models

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Bad-metal (BM) behavior featuring linear temperature dependence of the resistivity extending to well above the Mott-Ioffe-Regel (MIR) limit is often viewed as one of the key unresolved signatures of strong correlation. Here we associate the BM behavior with the Mott quantum criticality by examining...

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Autor principal: Rozenberg, Marcelo Javier
Publicado: 2015
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v114_n24_p_Vucicevic
http://hdl.handle.net/20.500.12110/paper_00319007_v114_n24_p_Vucicevic
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00319007_v114_n24_p_Vucicevic
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spelling paper:paper_00319007_v114_n24_p_Vucicevic2023-06-08T14:58:14Z Bad-Metal Behavior Reveals Mott Quantum Criticality in Doped Hubbard Models Rozenberg, Marcelo Javier Bad-metal (BM) behavior featuring linear temperature dependence of the resistivity extending to well above the Mott-Ioffe-Regel (MIR) limit is often viewed as one of the key unresolved signatures of strong correlation. Here we associate the BM behavior with the Mott quantum criticality by examining a fully frustrated Hubbard model where all long-range magnetic orders are suppressed, and the Mott problem can be rigorously solved through dynamical mean-field theory. We show that for the doped Mott insulator regime, the coexistence dome and the associated first-order Mott metal-insulator transition are confined to extremely low temperatures, while clear signatures of Mott quantum criticality emerge across much of the phase diagram. Remarkable scaling behavior is identified for the entire family of resistivity curves, with a quantum critical region covering the entire BM regime, providing not only insight, but also quantitative understanding around the MIR limit, in agreement with the available experiments. © 2015 American Physical Society. Fil:Rozenberg, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v114_n24_p_Vucicevic http://hdl.handle.net/20.500.12110/paper_00319007_v114_n24_p_Vucicevic
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Bad-metal (BM) behavior featuring linear temperature dependence of the resistivity extending to well above the Mott-Ioffe-Regel (MIR) limit is often viewed as one of the key unresolved signatures of strong correlation. Here we associate the BM behavior with the Mott quantum criticality by examining a fully frustrated Hubbard model where all long-range magnetic orders are suppressed, and the Mott problem can be rigorously solved through dynamical mean-field theory. We show that for the doped Mott insulator regime, the coexistence dome and the associated first-order Mott metal-insulator transition are confined to extremely low temperatures, while clear signatures of Mott quantum criticality emerge across much of the phase diagram. Remarkable scaling behavior is identified for the entire family of resistivity curves, with a quantum critical region covering the entire BM regime, providing not only insight, but also quantitative understanding around the MIR limit, in agreement with the available experiments. © 2015 American Physical Society.
author Rozenberg, Marcelo Javier
spellingShingle Rozenberg, Marcelo Javier
Bad-Metal Behavior Reveals Mott Quantum Criticality in Doped Hubbard Models
author_facet Rozenberg, Marcelo Javier
author_sort Rozenberg, Marcelo Javier
title Bad-Metal Behavior Reveals Mott Quantum Criticality in Doped Hubbard Models
title_short Bad-Metal Behavior Reveals Mott Quantum Criticality in Doped Hubbard Models
title_full Bad-Metal Behavior Reveals Mott Quantum Criticality in Doped Hubbard Models
title_fullStr Bad-Metal Behavior Reveals Mott Quantum Criticality in Doped Hubbard Models
title_full_unstemmed Bad-Metal Behavior Reveals Mott Quantum Criticality in Doped Hubbard Models
title_sort bad-metal behavior reveals mott quantum criticality in doped hubbard models
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v114_n24_p_Vucicevic
http://hdl.handle.net/20.500.12110/paper_00319007_v114_n24_p_Vucicevic
work_keys_str_mv AT rozenbergmarcelojavier badmetalbehaviorrevealsmottquantumcriticalityindopedhubbardmodels
_version_ 1768545963832508416

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