TY - GEN
T1 - Temperature-dependent spin dynamics in WSe2/Pt/CoFe trilayers
AU - Li, Ziyang
AU - Zhang, Yu
AU - Zhang, Jingying
AU - Song, Yiwen
AU - Zhang, Siwei
AU - Jin, Qingyuan
AU - Zhang, Zongzhi
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - In this work, magnetic anisotropy and magnetic damping factor (αs) were studied at different temperatures (T) for the tungsten diselenide (WSe2)/Pt/CoFe heterostructure samples with various WSe2 monolayer numbers (nML). We observed that the WSe2 underlayer could weaken the perpendicular magnetic anisotropy due to the increased interfacial roughness and decreased orbital hybridization effect. In particular, the insertion of WSe2 leads to a rather high αs, which mainly arises from the contributions of interfacial two-magnon scattering (TMS) and spin pumping by the WSe2 layer. When T is gradually reduced below 200 K, the magnetic damping factor of WSe2/Pt/CoFe exhibits a much strong temperature dependence, as compared with the single CoFe films or Pt/CoFe bilayer. We consider the significant drop in damping at T<200 K is due to the decreased TMS scattering since the interfacial random spins become ordered. Our work elucidates the significant implications of two-dimensional materials on the magnetic properties, which will be valuable for the development of transition-metal dichalcogenides based spintronics devices.
AB - In this work, magnetic anisotropy and magnetic damping factor (αs) were studied at different temperatures (T) for the tungsten diselenide (WSe2)/Pt/CoFe heterostructure samples with various WSe2 monolayer numbers (nML). We observed that the WSe2 underlayer could weaken the perpendicular magnetic anisotropy due to the increased interfacial roughness and decreased orbital hybridization effect. In particular, the insertion of WSe2 leads to a rather high αs, which mainly arises from the contributions of interfacial two-magnon scattering (TMS) and spin pumping by the WSe2 layer. When T is gradually reduced below 200 K, the magnetic damping factor of WSe2/Pt/CoFe exhibits a much strong temperature dependence, as compared with the single CoFe films or Pt/CoFe bilayer. We consider the significant drop in damping at T<200 K is due to the decreased TMS scattering since the interfacial random spins become ordered. Our work elucidates the significant implications of two-dimensional materials on the magnetic properties, which will be valuable for the development of transition-metal dichalcogenides based spintronics devices.
KW - magnetic anisotropy
KW - magnetic damping
KW - transition-metal dichalcogenides
KW - two-magnon scattering
UR - https://www.scopus.com/pages/publications/85172736713
U2 - 10.1109/INTERMAGShortPapers58606.2023.10228781
DO - 10.1109/INTERMAGShortPapers58606.2023.10228781
M3 - 会议稿件
AN - SCOPUS:85172736713
T3 - 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings
BT - 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE International Magnetic Conference - Short Papers, INTERMAG Short Papers 2023
Y2 - 15 May 2023 through 19 May 2023
ER -