Ultrafast magneto-optical dynamics in nickel(111)single crystal studied by the integration of ultrafast reflectivity and polarimetry probes  

作　　者：匡皓 余军潇 陈洁 H.E.Elsayed-Ali 李润泽 Peter M.Rentzepis Hao Kuang;Junxiao Yu;Jie Chen;H.E.Elsayed-Ali;Runze Li;Peter M.Rentzepis(School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China;Center for Transformative Science,ShanghaiTech University,Shanghai 201210,China;Center for Ultrafast Science and Technology,Key Laboratory for Laser Plasmas (Ministry of Education),Collaborative Innovation Center of IFSA (CICIFSA),School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China;Department of Electrical and Computer Engineering,Old Dominion University,Norfolk,Virginia 23529,USA;Department of Electrical and Computer Engineering,Texas A&M University,College Station,Texas 77843,USA)

机构地区：[1]School of Physical Science and Technology,ShanghaiTech University,Shanghai 201210,China [2]Center for Transformative Science,ShanghaiTech University,Shanghai 201210,China [3]Center for Ultrafast Science and Technology,Key Laboratory for Laser Plasmas (Ministry of Education),Collaborative Innovation Center of IFSA (CICIFSA),School of Physics and Astronomy,Shanghai Jiao Tong University,Shanghai 200240,China [4]Department of Electrical and Computer Engineering,Old Dominion University,Norfolk,Virginia 23529,USA [5]Department of Electrical and Computer Engineering,Texas A&M University,College Station,Texas 77843,USA

出　　处：《Chinese Physics B》2024年第3期65-69,共5页中国物理B（英文版）

基　　金：Project supported by the National Key R&D Program of China (Grant Nos. 2022YFA1604402 and 2022YFA1604403);the National Natural Science Foundation of China (NSFC) (Grant No. 11721404);the Shanghai Rising-Star Program (Grant No. 21QA1406100);the Technology Innovation Action Plan of the Science and Technology Commission of Shanghai Municipality (Grant No. 20JC1416000);support by the Air Force Office of Scientific Research (AFOSR) (Grant No. FA9550-20-10139);the Texas A&M Engineering Experimental Station (TEES)

摘　　要：With the integration of ultrafast reflectivity and polarimetry probes,we observed carrier relaxation and spin dynamics induced by ultrafast laser excitation of Ni(111)single crystals.The carrier relaxation time within the linear excitation range reveals that electron-phonon coupling and dissipation of photon energy into the bulk of the crystal take tens of picoseconds.On the other hand,the observed spin dynamics indicate a longer time of about 120 ps.To further understand how the lattice degree of freedom is coupled with these dynamics may require the integration of an ultrafast diffraction probe.

关 键 词：ultrafast spin dynamics non-equilibrium dynamics multi-probe 

分 类 号：O43[机械工程—光学工程]