Absence of static phase separation in the high Tc cuprate YBa2Cu3O6+y -: art. no. 157002

被引：79

作者：

Bobroff, J

Alloul, H

Ouazi, S

Mendels, P

Mahajan, A

Blanchard, N

Collin, G

Guillen, V

Marucco, JF

机构：

[1] Univ Paris 11, Phys Solides Lab, UMR 8502, F-91405 Orsay, France

[2] Ctr Etud Saclay, CEA, CNRS, LLB, F-91191 Gif Sur Yvette, France

[3] Univ Paris 11, LEMHE, UMR 8647, F-91405 Orsay, France

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.89.157002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use Y-89 NMR in YBa2Cu3O6+y in order to evaluate with high sensitivity the distribution of hole content p in the CuO2 planes. For y=1 and y=0.6, this hole doping distribution is found narrow with a full width at half maximum smaller than Deltap=0.025. This rules out any large static phase separation between underdoped and optimally doped regions in contrast with the one observed by STM in Bi2212 and by NQR in LaSrCuO. This establishes that static electronic phase separation is not a generic feature of the cuprates.

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页码：157002/1 / 157002/4

页数：4

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