Evidence for local lattice fluctuations as a response function of the charge stripe order in the La1.48Nd0.4Sr0.12CuO4 system

被引：26
|
作者：
Saini, NL [1 ]
Oyanagi, H
Lanzara, A
Di Castro, D
Agrestini, S
Bianconi, A
Nakamura, F
Fujita, T
机构：
[1] Univ Roma La Sapienza, Unita INFM, Piazzale Aldo Moro 2, I-00185 Rome, Italy
[2] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan
[3] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
[4] Hiroshima Univ, ADSM, Dept Quantum Matter, Higashihiroshima 7398526, Japan
来源：
PHYSICAL REVIEW B | 2001年 / 64卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.64.132510
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have used polarized Cu K-edge extended x-ray absorption fine structure to investigate the local lattice displacements in the charge-ordered La1.48Nd0.4Sr0.12CuO4 system. The temperature-dependent distance broadening, given by the Debye-Waller factors of the Cu-O bonds measuring local lattice fluctuations, shows a clear steplike increase below the charge stripe order temperature. The results construct a direct evidence for the local lattice fluctuations as a response function of the charge stripe ordering in the cuprate superconductors.
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页数：4
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