Chemical potential shift in lightly doped to overdoped Bi2Sr2Ca1-xRxCu2O8+y(R = Pr, Er) -: art. no. 172501

被引：40

作者：

Harima, N ^{[1
]}

Fujimori, A

Sugaya, T

Terasaki, I

机构：

[1] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[2] Univ Tokyo, Dept Complex Sci & Engn, Bunkyo Ku, Tokyo 1130033, Japan

[3] Waseda Univ, Dept Appl Phys, Tokyo 1698555, Japan

来源：

PHYSICAL REVIEW B | 2003年 / 67卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.67.172501

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the chemical potential shift in the high-temperature superconductor Bi2Sr2Ca1-xRxCu2O8+y (R=Pr, Er), where the hole concentration is varied from 0.025 to 0.17 per Cu, by precise measurements of core-level photoemission spectra. The result shows that the shift is depressed in the underdoped region as in the case of La2-xSrxCuO4 (LSCO) but the depression is much weaker than in LSCO. The observed shift in the present system can be relatively well explained by numerical results on the doped two-dimensional Hubbard model and suggests that the change of the electronic structure induced by hole doping is less influenced by stripe fluctuations than in LSCO.

引用

页数：4

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