Doping evolution of the optical scattering rate and effective mass of Bi2Sr2-xLaxCuO6

被引：15

作者：

Dai, Y. M. ^{[1
,2
]}

Xu, B. ^{[1
]}

Cheng, P. ^{[1
]}

Luo, H. Q. ^{[1
]}

Wen, H. H. ^{[1
,3
,4
]}

Qiu, X. G. ^{[1
]}

Lobo, R. P. S. M. ^{[2
]}

机构：

[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Natl Lab Superconduct, Inst Phys, Beijing 100190, Peoples R China

[2] UPMC, LPEM, ESPCI ParisTech, CNRS, F-75231 Paris 5, France

[3] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[4] Nanjing Univ, Dept Phys, Nanjing 210093, Jiangsu, Peoples R China

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 09期

基金：

美国国家科学基金会;

关键词：

BI2SR2CUO6; REFLECTIVITY;

D O I：

10.1103/PhysRevB.85.092504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We determined the optical conductivity of Bi2Sr2-xLaxCuO6 at dopings covering the phase diagram from the underdoped to the overdoped regimes. The frequency-dependent scattering rate shows a pseudogap extending into the overdoped regime. We found that the effective mass enhancement calculated from the optical conductivity is constant throughout the phase diagram. Conversely, the effective optical charge density varies almost linearly with doping. Our results suggest that the low-frequency electrodynamics of Bi2Sr2-xLaxCuO6 is not strongly affected by the long-range Mott transition.

引用

页数：4

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