Spatially resolved relaxation dynamics of photoinduced quasiparticles in underdoped YBa2Cu3O7-δ

Chih-Wei Luo*, P. T. Shih, Y. J. Chen, M. H. Chen, Kaung-Hsiung Wu, Jenh-Yih Juang, Jiunn-Yuan Lin, T. M. Uen, Y. S. Gou

*此作品的通信作者

研究成果: Article同行評審

13 引文 斯高帕斯(Scopus)

摘要

The spatially resolved relaxation characteristics of photoinduced quasiparticles (QPs) in CuO2 planes of underdoped YBCO are disclosed by polarized fs time-resolved spectroscopy. The relaxation time (τ) along b axis diverges at Tc, and appears to be governed by a temperature-dependent gap Δ(T) at T<Tc. Furthermore, for T>Tc, a monotonic increase of τ with decreasing T along the b axis and ab diagonal was observed and can be attributed to a temperature-independent gap Δp. The results lend support to the recombination dominant scenario of QP dynamics. However, the QP thermalization may take part along the nodal direction in the highly underdoped samples.

原文English
文章編號092506
頁數4
期刊Physical Review B - Condensed Matter and Materials Physics
72
發行號9
DOIs
出版狀態Published - 15 9月 2005

指紋

深入研究「Spatially resolved relaxation dynamics of photoinduced quasiparticles in underdoped YBa2Cu3O7-δ」主題。共同形成了獨特的指紋。

引用此