Long-Range Incommensurate Charge Fluctuations in (Y,Nd)Ba2Cu3O6+x

被引：952

作者：

Ghiringhelli, G. ^{[1
,2
]}

Le Tacon, M. ^{[3
]}

Minola, M. ^{[1
,2
]}

Blanco-Canosa, S. ^{[3
]}

Mazzoli, C. ^{[1
,2
]}

Brookes, N. B. ^{[4
]}

De Luca, G. M. ^{[5
]}

Frano, A. ^{[3
,6
]}

Hawthorn, D. G. ^{[7
]}

He, F. ^{[8
]}

Loew, T. ^{[3
]}

Sala, M. Moretti ^{[4
]}

Peets, D. C. ^{[3
]}

Salluzzo, M. ^{[5
]}

Schierle, E. ^{[6
]}

Sutarto, R. ^{[8
,9
]}

Sawatzky, G. A. ^{[9
]}

Weschke, E. ^{[6
]}

Keimer, B. ^{[3
]}

Braicovich, L. ^{[1
,2
]}

机构：

[1] Consorzio Nazl Interuniv Sci Fis Materia, CNR SPIN, I-20133 Milan, Italy

[2] Politecn Milan, Dipartimento Fis, I-20133 Milan, Italy

[3] Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany

[4] ESRF, F-38043 Grenoble, France

[5] CNR SPIN, I-80126 Naples, Italy

[6] Helmholtz Zentrum Berlin Mat & Energie, D-12489 Berlin, Germany

[7] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada

[8] Univ Saskatchewan, Canadian Light Source, Saskatoon, SK S7N 0X4, Canada

[9] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z4, Canada

来源：

SCIENCE | 2012年 / 337卷 / 6096期

基金：

加拿大自然科学与工程研究理事会; 加拿大健康研究院;

关键词：

HIGH-TEMPERATURE SUPERCONDUCTOR; FERMI-SURFACE; STRIPE ORDER; PSEUDOGAP; PHASE; SYMMETRY;

D O I：

10.1126/science.1223532

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The concept that superconductivity competes with other orders in cuprate superconductors has become increasingly apparent, but obtaining direct evidence with bulk-sensitive probes is challenging. We have used resonant soft x-ray scattering to identify two-dimensional charge fluctuations with an incommensurate periodicity of similar to 3.2 lattice units in the copper-oxide planes of the superconductors (Y,Nd)Ba2Cu3O6+x, with hole concentrations of 0.09 to 0.13 per planar Cu ion. The intensity and correlation length of the fluctuation signal increase strongly upon cooling down to the superconducting transition temperature (T-c); further cooling below T-c abruptly reverses the divergence of the charge correlations. In combination with earlier observations of a large gap in the spin excitation spectrum, these data indicate an incipient charge density wave instability that competes with superconductivity.

引用

页码：821 / 825

页数：5

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