Anisotropic breakdown of Fermi liquid quasiparticle excitations in overdoped La2-xSrxCuO4

被引：41

作者：

Chang, J. ^{[1
,2
,3
]}

Mansson, M. ^{[1
,3
,4
]}

Pailhes, S. ^{[3
,5
]}

Claesson, T. ^{[4
]}

Lipscombe, O. J. ^{[6
]}

Hayden, S. M. ^{[6
]}

Patthey, L. ^{[2
]}

Tjernberg, O. ^{[4
]}

Mesot, J. ^{[1
,2
,7
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Condensed Matter Phys, CH-1015 Lausanne, Switzerland

[2] Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland

[3] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[4] KTH Royal Inst Technol, S-16440 Kista, Sweden

[5] Univ Lyon 1, CNRS, Inst Lumiere Mat, UMR5306, F-69622 Villeurbanne, France

[6] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[7] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland

来源：

NATURE COMMUNICATIONS | 2013年 / 4卷

基金：

瑞典研究理事会; 英国工程与自然科学研究理事会; 瑞士国家科学基金会;

关键词：

NORMAL-STATE; TEMPERATURE; BEHAVIOR; SURFACE; TL2BA2CUO6+DELTA; TRANSPORT; RESISTIVITY; ELECTRON;

D O I：

10.1038/ncomms3559

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

High-temperature superconductivity emerges from an un-conventional metallic state. This has stimulated strong efforts to understand exactly how Fermi liquids breakdown and evolve into an un-conventional metal. A fundamental question is how Fermi liquid quasiparticle excitations break down in momentum space. Here we show, using angle-resolved photoemission spectroscopy, that the Fermi liquid quasiparticle excitations of the overdoped superconducting cuprate La1.77Sr0.23CuO4 is highly anisotropic in momentum space. The quasiparticle scattering and residue behave differently along the Fermi surface and hence the Kadowaki-Wood's relation is not obeyed. This kind of Fermi liquid breakdown may apply to a wide range of strongly correlated metal systems where spin fluctuations are present.

引用

页数：5

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