Observation of an unconventional metal-insulator transition in overdoped CuO2 compounds -: art. no. 107003

被引：61

作者：

Venturini, F ^{[1
]}

Opel, M

Devereaux, TP

Freericks, JK

Tütto, I

Revaz, B

Walker, E

Berger, H

Forró, L

Hackl, R

机构：

[1] Bavarian Acad Sci, Walther Meissner Inst, D-85748 Garching, Germany

[2] Univ Waterloo, Dept Phys, Waterloo, ON N2L 3G1, Canada

[3] Georgetown Univ, Dept Phys, Washington, DC 20057 USA

[4] Hungarian Acad Sci, RISPO, H-1525 Budapest, Hungary

[5] Univ Geneva, DPMC, CH-1211 Geneva, Switzerland

[6] EPFL Ecublens, CH-1025 Lausanne, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.89.107003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The electron dynamics in the normal state of Bi2Sr2CaCu2O8+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.

引用

页数：4

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