Nonequilibrium quasiparticle relaxation in the vortex state of La2-xSrxCuO4 -: art. no. 107004

被引：5

作者：

Bianchi, G

Chen, C

Nohara, M

Takagi, H

Ryan, JF

机构：

[1] Univ Oxford, Dept Phys, Oxford OX1 3PU, England

[2] Univ Tokyo, Grad Sch Frontier Sci, Dept Adv Mat Sci, Bunkyo Ku, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.94.107004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the charge dynamics in the vortex state of La2-xSrxCuO4 by femtosecond time-resolved reflectance, which we demonstrate to be a direct probe of low-energy quasiparticle states. Application of a c-axis magnetic field induces regions surrounding vortex cores that display pseudogap charge dynamics. We determine the characteristic width similar to 130 A in optimally doped material and we show that it increases with decreasing doping. These results confirm a new experimental method of probing the microscopic properties of vortices in the cuprates.

引用

页数：4

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