Nonequilibrium quasiparticle relaxation in the vortex state of La 2-xSrxCuO4

G. Bianchi, C. Chen, M. Nohara, H. Takagi, J. F. Ryan

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have measured the charge dynamics in the vortex state of La 2-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 ∼130 Å 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.

Original languageEnglish
Article number107004
JournalPhysical Review Letters
Volume94
Issue number10
DOIs
Publication statusPublished - Mar 18 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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