Ultrafast carrier relaxation dynamics in single-layer cuprates

被引：41

作者：

Schneider, ML

Demsar, J

Glinka, Y

Klimov, A

Krapf, A

Rast, S

Ren, YH

Si, WD

Xu, Y

Zeng, XH

Bozovic, I

Lüpke, G

Manzke, R

Sobolewski, R

Taylor, AT

Tolk, NH

Xi, XX

Joynt, R

Onellion, M

机构：

[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[2] Los Alamos Natl Lab, Los Alamos, NM USA

[3] Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA

[4] Polish Acad Sci, Inst Phys, PL-02904 Warsaw, Poland

[5] Univ Rochester, Dept Elect & Comp Engn, Rochester, NY 14627 USA

[6] Univ Rochester, Laser Energet Lab, Rochester, NY 14627 USA

[7] Humboldt Univ, Inst Phys, D-10115 Berlin, Germany

[8] Coll William & Mary, Dept Appl Sci, Williamsburg, VA USA

[9] Penn State Univ, Dept Phys, University Pk, PA 16802 USA

[10] OXXEL GmbH, D-28359 Bremen, Germany

来源：

EUROPHYSICS LETTERS | 2002年 / 60卷 / 03期

关键词：

D O I：

10.1209/epl/i2002-00286-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using a femtosecond pump-probe optical technique, we measured the time-resolved change in reflectivity of three single-layer cuprate samples, including Bi2Sr2-xLaxCuO6+z, La2CuO4+y and La2-xSrxCuO4 grown on SrTiO3. We analyze the data in terms of a nonthermal electron relaxation model, and obtain quantitative agreement between the model and the data. The initial electron-electron thermalization process is much longer in the uperconducting samples as opposed to the overdoped nonsuperconducting sample, suggesting a bottleneck in electron thermalization process due to the presence of the superconducting gap.

引用

页码：460 / 466

页数：7

共 29 条

[1] THEORY OF THERMAL RELAXATION OF ELECTRONS IN METALS [J].