Metal-non-metal transition and specific heat of Kondo insulators

The metal-non-metal transition in Kondo insulators of the type (Ce1-xLax)3Bi4Pt3 is studied as a function of the La (Kondo hole) concentration x. We explore the transition under variation of the applied magnetic field, the pressure, and the temperature. The many-body effects are treated by diagonali...

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Detalles Bibliográficos
Publicado: 2000
Materias:
Approximation theory
Electrons
Fermi level
Hamiltonians
Impurities
Magnetic field effects
Pressure effects
Specific heat of solids
Thermal effects
Kondo hole
Kondo insulators
Metal-non-metal transition
Real space renormalization technique
Bismuth alloys
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09538984_v12_n48_p9885_Busser
http://hdl.handle.net/20.500.12110/paper_09538984_v12_n48_p9885_Busser
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_09538984_v12_n48_p9885_Busser
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spelling paper:paper_09538984_v12_n48_p9885_Busser2025-07-30T18:31:49Z Metal-non-metal transition and specific heat of Kondo insulators Approximation theory Electrons Fermi level Hamiltonians Impurities Magnetic field effects Pressure effects Specific heat of solids Thermal effects Kondo hole Kondo insulators Metal-non-metal transition Real space renormalization technique Bismuth alloys The metal-non-metal transition in Kondo insulators of the type (Ce1-xLax)3Bi4Pt3 is studied as a function of the La (Kondo hole) concentration x. We explore the transition under variation of the applied magnetic field, the pressure, and the temperature. The many-body effects are treated by diagonalizing the site Hamiltonian and embedding this solution into the lattice, using the chain approximation. The alloy states at the Fermi energy are obtained using a real-space renormalization technique. The metal-insulator transition produced by the incorporation of La impurities is explained by the appearance of a delocalized level inside the conduction band rather than by the creation of an impurity band at the gap. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09538984_v12_n48_p9885_Busser http://hdl.handle.net/20.500.12110/paper_09538984_v12_n48_p9885_Busser
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Approximation theory
Electrons
Fermi level
Hamiltonians
Impurities
Magnetic field effects
Pressure effects
Specific heat of solids
Thermal effects
Kondo hole
Kondo insulators
Metal-non-metal transition
Real space renormalization technique
Bismuth alloys
spellingShingle Approximation theory
Electrons
Fermi level
Hamiltonians
Impurities
Magnetic field effects
Pressure effects
Specific heat of solids
Thermal effects
Kondo hole
Kondo insulators
Metal-non-metal transition
Real space renormalization technique
Bismuth alloys
Metal-non-metal transition and specific heat of Kondo insulators
topic_facet Approximation theory
Electrons
Fermi level
Hamiltonians
Impurities
Magnetic field effects
Pressure effects
Specific heat of solids
Thermal effects
Kondo hole
Kondo insulators
Metal-non-metal transition
Real space renormalization technique
Bismuth alloys
description The metal-non-metal transition in Kondo insulators of the type (Ce1-xLax)3Bi4Pt3 is studied as a function of the La (Kondo hole) concentration x. We explore the transition under variation of the applied magnetic field, the pressure, and the temperature. The many-body effects are treated by diagonalizing the site Hamiltonian and embedding this solution into the lattice, using the chain approximation. The alloy states at the Fermi energy are obtained using a real-space renormalization technique. The metal-insulator transition produced by the incorporation of La impurities is explained by the appearance of a delocalized level inside the conduction band rather than by the creation of an impurity band at the gap.
title Metal-non-metal transition and specific heat of Kondo insulators
title_short Metal-non-metal transition and specific heat of Kondo insulators
title_full Metal-non-metal transition and specific heat of Kondo insulators
title_fullStr Metal-non-metal transition and specific heat of Kondo insulators
title_full_unstemmed Metal-non-metal transition and specific heat of Kondo insulators
title_sort metal-non-metal transition and specific heat of kondo insulators
publishDate 2000
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09538984_v12_n48_p9885_Busser
http://hdl.handle.net/20.500.12110/paper_09538984_v12_n48_p9885_Busser
_version_ 1840321571409887232

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