Ultrafast destruction and recovery of the spin density wave order in iron-based pnictides: A multipulse optical study

被引：0
作者：
Naseska, M. [1 ]
Pogrebna, A. [1 ,2 ]
Cao, G. [3 ]
Xu, Z. A. [3 ]
Mihailovic, D. [1 ,4 ]
Mertelj, T. [1 ,4 ]
机构：
[1] Jozef Stefan Inst, Complex Matter Dept, Jamova 39, SI-1000 Ljubljana, Slovenia
[2] Radboud Univ Nijmegen, Inst Molecules & Mat, NL-6525 AJ Nijmegen, Netherlands
[3] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China
[4] CENN Nanoctr, Jamova 39, SI-1000 Ljubljana, Slovenia
来源：
PHYSICAL REVIEW B | 2018年 / 98卷 / 03期
基金：
欧洲研究理事会;
关键词：
LAYERED SUPERCONDUCTOR; ELECTRONIC-STRUCTURE; PHASE; STATE; ANISOTROPY;
D O I：
10.1103/PhysRevB.98.035148;035148
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on a systematic excitation-density-dependent all-optical femtosecond time-resolved study of the spin density wave state in iron-based superconductors. The destruction and recovery dynamics are measured by means of the standard and a multipulse pump-probe technique. The experimental data are analyzed and interpreted in the framework of an extended three-temperature model. The analysis suggests that the optical-phonon energy relaxation plays an important role in the recovery of almost exclusively electronically driven spin density wave order.
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页数：13
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