Zhang Qi, Ren Lixia, Wang Yifei, Tian Yingyi, Wang Shuanhu, Jin Kexin, Zhai Peng, Zhang Lu, Ren Ren, Xin Jingjing, Yu Hua, Liu Shengzhong Frank
Key Laboratory for Applied Surface and Colloid Chemistry, National Ministry of Education; Shaanxi Engineering Lab for Advanced Energy Technology; School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China.
School of Physical Sciences, Great Bay University, Dongguan, 523000, Guangdong, China.
Nano Lett. 2024 Oct 23;24(42):13238-13246. doi: 10.1021/acs.nanolett.4c03420. Epub 2024 Oct 11.
Organic-inorganic halide perovskite (OIHP) spintronics has become a promising research field, as it provides a new precisely manipulable degree of freedom. Recently, by utilizing the spin Seebeck effect and inverse spin-Hall effect measurements, we have discovered substantial magnon injection and transport in Pt/OIHP/YFeO nonlocalized structure. In theory, hyperfine interaction (HFI) is considered to have an important role in the magnon transport of OIHP, but there is no clear experimental evidence reported so far. We report increased spin Seebeck coefficient and lengthened magnon diffusion length in deuterated- (D-) OIHP films that have weaker HFI strength compared with protonated- (H-) OIHP. Consequently, D-MAPbBr film, as a non-ferromagnetic spacer, achieves long magnon diffusion length at room temperature (close to 120.3 nm). Our finding provides valuable insights into understanding magnon transport in OIHP films and paves the way for the use of OIHPs in multifunctional applications.
