Femtosecond optical response of electron-doped superconductor La 2-xCexCuO4

Y. B. Long; L. Zhao; B. R. Zhao; X. G. Qiu; C. Y. Zhang; P. M. Fu; L. Wang; Z. G. Zhang; S. P. Zhao; Q. S. Yang; G. P. Wang

doi:10.1016/j.physc.2005.12.056

Femtosecond optical response of electron-doped superconductor La _2-xCe_xCuO₄

Y. B. Long^*, L. Zhao, B. R. Zhao, X. G. Qiu, C. Y. Zhang, P. M. Fu, L. Wang, Z. G. Zhang, S. P. Zhao, Q. S. Yang, G. P. Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

We investigate the photoinduced quasiparticle dynamics in the electron-doped superconductor La_2-xCe_xCuO₄ (LCCO) by using femtosecond pump-probe technique. A monoexponential decay function is employed to fit the data for the first 20 ps after the maximum of the signal. The relaxation time decreases with increased temperature both above and below T_c. Power function (τ ∝ T^-N) is used to fit the relaxation time. N is 1.45 for above 20 K and 0.3 for below 20 K. The change of N at 20 K is attributed to the opening of the gap.

Original language	English
Pages (from-to)	59-61
Number of pages	3
Journal	Physica C: Superconductivity and its Applications
Volume	436
Issue number	2
DOIs	https://doi.org/10.1016/j.physc.2005.12.056
Publication status	Published - 15 Apr 2006
Externally published	Yes

Access to Document

10.1016/j.physc.2005.12.056

Cite this

@article{0acacd6c1d8d4b42b658a6b42976aa97,

title = "Femtosecond optical response of electron-doped superconductor La 2-xCexCuO4",

abstract = "We investigate the photoinduced quasiparticle dynamics in the electron-doped superconductor La2-xCexCuO4 (LCCO) by using femtosecond pump-probe technique. A monoexponential decay function is employed to fit the data for the first 20 ps after the maximum of the signal. The relaxation time decreases with increased temperature both above and below Tc. Power function (τ ∝ T-N) is used to fit the relaxation time. N is 1.45 for above 20 K and 0.3 for below 20 K. The change of N at 20 K is attributed to the opening of the gap.",

author = "Long, {Y. B.} and L. Zhao and Zhao, {B. R.} and Qiu, {X. G.} and Zhang, {C. Y.} and Fu, {P. M.} and L. Wang and Zhang, {Z. G.} and Zhao, {S. P.} and Yang, {Q. S.} and Wang, {G. P.}",

year = "2006",

month = apr,

day = "15",

doi = "10.1016/j.physc.2005.12.056",

language = "English",

volume = "436",

pages = "59--61",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier B.V.",

number = "2",

}

TY - JOUR

T1 - Femtosecond optical response of electron-doped superconductor La 2-xCexCuO4

AU - Long, Y. B.

AU - Zhao, L.

AU - Zhao, B. R.

AU - Qiu, X. G.

AU - Zhang, C. Y.

AU - Fu, P. M.

AU - Wang, L.

AU - Zhang, Z. G.

AU - Zhao, S. P.

AU - Yang, Q. S.

AU - Wang, G. P.

PY - 2006/4/15

Y1 - 2006/4/15

N2 - We investigate the photoinduced quasiparticle dynamics in the electron-doped superconductor La2-xCexCuO4 (LCCO) by using femtosecond pump-probe technique. A monoexponential decay function is employed to fit the data for the first 20 ps after the maximum of the signal. The relaxation time decreases with increased temperature both above and below Tc. Power function (τ ∝ T-N) is used to fit the relaxation time. N is 1.45 for above 20 K and 0.3 for below 20 K. The change of N at 20 K is attributed to the opening of the gap.

AB - We investigate the photoinduced quasiparticle dynamics in the electron-doped superconductor La2-xCexCuO4 (LCCO) by using femtosecond pump-probe technique. A monoexponential decay function is employed to fit the data for the first 20 ps after the maximum of the signal. The relaxation time decreases with increased temperature both above and below Tc. Power function (τ ∝ T-N) is used to fit the relaxation time. N is 1.45 for above 20 K and 0.3 for below 20 K. The change of N at 20 K is attributed to the opening of the gap.

UR - http://www.scopus.com/inward/record.url?scp=33645462444&partnerID=8YFLogxK

U2 - 10.1016/j.physc.2005.12.056

DO - 10.1016/j.physc.2005.12.056

M3 - Article

AN - SCOPUS:33645462444

SN - 0921-4534

VL - 436

SP - 59

EP - 61

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 2

ER -

Femtosecond optical response of electron-doped superconductor La _2-xCe_xCuO₄

Abstract

Access to Document

Other files and links

Fingerprint

Cite this