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

doi:10.1088/1674-1056/ad1983

中国物理B ›› 2024, Vol. 33 ›› Issue (3): 37802-037802.doi: 10.1088/1674-1056/ad1983

所属专题： SPECIAL TOPIC — States and new effects in nonequilibrium

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

Hao Kuang(匡皓)^1,2, Junxiao Yu(余军潇)³, Jie Chen(陈洁)³, H. E. Elsayed-Ali⁴, Runze Li(李润泽)^1,2,†, and Peter M. Rentzepis^5,‡

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

收稿日期:2023-11-28 修回日期:2023-12-27 接受日期:2023-12-29 出版日期:2024-02-22 发布日期:2024-03-06
通讯作者: Runze Li, Peter M. Rentzepis E-mail:lirz@shanghaitech.edu.cn;prentzepis@tamu.edu
基金资助:
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), and the Technology Innovation Action Plan of the Science and Technology Commission of Shanghai Municipality (Grant No. 20JC1416000). Dr Rentzepis acknowledges support by the Air Force Office of Scientific Research (AFOSR) (Grant No. FA9550-20-1- 0139) and the Texas A&M Engineering Experimental Station (TEES). Dr Li thanks the Shanghai Soft X-ray Free Electron Laser Project for providing the Ti:sapphire laser time to perform this study.

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

Hao Kuang(匡皓)^1,2, Junxiao Yu(余军潇)³, Jie Chen(陈洁)³, H. E. Elsayed-Ali⁴, Runze Li(李润泽)^1,2,†, and Peter M. Rentzepis^5,‡

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

Received:2023-11-28 Revised:2023-12-27 Accepted:2023-12-29 Online:2024-02-22 Published:2024-03-06
Contact: Runze Li, Peter M. Rentzepis E-mail:lirz@shanghaitech.edu.cn;prentzepis@tamu.edu
Supported by:
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), and the Technology Innovation Action Plan of the Science and Technology Commission of Shanghai Municipality (Grant No. 20JC1416000). Dr Rentzepis acknowledges support by the Air Force Office of Scientific Research (AFOSR) (Grant No. FA9550-20-1- 0139) and the Texas A&M Engineering Experimental Station (TEES). Dr Li thanks the Shanghai Soft X-ray Free Electron Laser Project for providing the Ti:sapphire laser time to perform this study.

摘要/Abstract

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

Abstract: 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.

Key words: ultrafast spin dynamics, non-equilibrium dynamics, multi-probe

中图分类号: (Ultrafast spectroscopy (<1 psec))

78.47.J-

42.65.Re (Ultrafast processes; optical pulse generation and pulse compression) 75.78.Jp (Ultrafast magnetization dynamics and switching)

Hao Kuang(匡皓), Junxiao Yu(余军潇), Jie Chen(陈洁), H. E. Elsayed-Ali, Runze Li(李润泽), and Peter M. Rentzepis. Ultrafast magneto-optical dynamics in nickel (111) single crystal studied by the integration of ultrafast reflectivity and polarimetry probes[J]. 中国物理B, 2024, 33(3): 37802-037802.

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

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

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