Title: Observation of an unconventional metal-insulator transition in overdoped CuO2 compounds
Authors : Venturini, Francesca
Opel, M.
Devereaux, T. P.
Freericks, J. K.
Tüttő, I.
Revaz, B.
Walker, E.
Berger, H.
Forró, L.
Hackl, R.
Published in : Physical Review Letters
Volume(Issue) : 89
Issue : 10
Pages : 107003-1
Pages to: 107003-4
Publisher / Ed. Institution : American Physical Society
Issue Date: 2002
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Physics; Superconductivity; Strongly Correlated Electron
Subject (DDC) : 530: Physics
Abstract: The electron dynamics in the normal state of Bi2Sr2CaCu2O(8+delta) is studied by inelastic light scattering over a wide range of doping. A strong anisotropy of the electron relaxation is found which cannot be explained by single-particle properties alone. The results strongly indicate the presence of an unconventional quantum-critical metal-insulator transition where "hot" (antinodal) quasiparticles become insulating while "cold" (nodal) quasiparticles remain metallic. A phenomenology is developed which allows a quantitative understanding of the Raman results and provides a scenario which links single- and many-particle properties.
Departement: School of Engineering
Organisational Unit: Institute of Applied Mathematics and Physics (IAMP)
Publication type: Article in scientific Journal
DOI : 10.1103/PhysRevLett.89.107003
ISSN: 0031-9007
URI: https://digitalcollection.zhaw.ch/handle/11475/6450
Appears in Collections:Publikationen School of Engineering

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