|Title:||Observation of an unconventional metal-insulator transition in overdoped CuO2 compounds|
|Authors :||Venturini, Francesca|
Devereaux, T. P.
Freericks, J. K.
|Published in :||Physical Review Letters|
|Publisher / Ed. Institution :||American Physical Society|
|License (according to publishing contract) :||Licence according to publishing contract|
|Type of review:||Peer review (Publication)|
|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|
|Appears in Collections:||Publikationen School of Engineering|
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