Oxygen-isotope shift of the charge-stripe ordering temperature in La2-xSrxCuO4 from x-ray absorption spectroscopy

被引：146

作者：

Lanzara, A

Zhao, GM

Saini, NL

Bianconi, A

Conder, K

Keller, H

Müller, KA

机构：

[1] Univ Rome La Sapienza, Unita INFM, I-00185 Rome, Italy

[2] Univ Rome La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[3] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1999年 / 11卷 / 48期

关键词：

D O I：

10.1088/0953-8984/11/48/103

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A very large oxygen-isotope shift of the charge-stripe ordering temperature in the high-temperature superconductors La2-xSrxCuO4 has been observed using x-ray absorption spectroscopy, a fast (similar to 10(-15) seconds) and local probe (similar to 5 Angstrom). Upon replacing O-16 with O-18, the charge-stripe ordering temperature in La1.94Sr0.06CuO4 increases from about 110 K to 180 K. The present results provide compelling evidence for a strong electron-phonon interaction in this compound, and thus place important constraints on the microscopic origin of the stripe formation.

引用

页码：L541 / L546

页数：6

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