CuO-chain Raman scattering and photoinduced metastability in YBa2Cu3Ox

被引：7

作者：

Kall, M ^{[1
]}

Osada, M

Kakihana, M

Borjesson, L

Frello, T

Madsen, J

Andersen, NH

Liang, R

Dosanjh, P

Hardy, WN

机构：

[1] Chalmers Univ Technol, Dept Appl Phys, S-41296 Gothenburg, Sweden

[2] Riso Natl Lab, Condensed Matter Phys & Chem Dept, DK-4000 Roskilde, Denmark

[3] Univ British Columbia, Dept Phys, Vancouver, BC V6T 1Z1, Canada

[4] Tokyo Inst Technol, Mat & Struct Lab, Midori Ku, Yokohama, Kanagawa 226, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.57.R14072

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Raman measurements in YBa2Cu3Ox (x=6.72-6.82) high-T-c superconductors reveal intense phonon scattering due to an electronic resonance localized near oxygen vacancies on the CuO chains. Below room temperature the resonance can be photobleached in a manner similar to reported persistent photoinduced superconductivity effects, indicating photon-assisted oxygen ordering or electron vacancy capture. By comparing Raman and x-ray diffraction data we establish a correlation between the stability of the photoinduced state and the oxygen-ordering kinetics in the CuO chains.

引用

页码：R14072 / R14075

页数：4

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