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Photoinduced Femtosecond Relaxation Of Antiferromagnetic Orders In The Iron Pnictides Revealed By Ultrafast Laser Ellipsometry, Aaron E. Patz, Tianqi Li, Sheng Ran, Sergey L. Bud'ko, Paul C. Canfield, Jigang Wang
Photoinduced Femtosecond Relaxation Of Antiferromagnetic Orders In The Iron Pnictides Revealed By Ultrafast Laser Ellipsometry, Aaron E. Patz, Tianqi Li, Sheng Ran, Sergey L. Bud'ko, Paul C. Canfield, Jigang Wang
Jigang Wang
We report ultrafast softening of the antiferromagnetic order, ~150fs after the electron thermalization, which follows a two-step recovery pathway to reveal a distinct interplay of magnetism and the nematic order in iron pnictides.