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Effective spin injection into the organic semiconductor PTCDA evaluated by a normalization method

التفاصيل البيبلوغرافية
العنوان: Effective spin injection into the organic semiconductor PTCDA evaluated by a normalization method
المؤلفون: Sheng-Yueh Weng, M. Sanjoy Singh, Cheng-Feng Hong, Wen-Teng Lin, Po-Hsun Wu, Ssu-Yen Huang, Jauyn Grace Lin, Yu-Hsun Chu, Wen-Chung Chiang, Minn-Tsong Lin
المصدر: Applied Physics Letters. 121:232401
بيانات النشر: AIP Publishing, 2022.
سنة النشر: 2022
مصطلحات موضوعية: Physics and Astronomy (miscellaneous)
الوصف: Studies of spin current injection, transport, and interface control have drawn attention recently for efficient organic spintronic devices. In this study, we apply both spin pumping (SP) and the longitudinal spin Seebeck effect (LSSE) to inject spin currents into a π-conjugated organic semiconductor, perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA), and characterize injection and transport by measuring inverse spin Hall voltage [Formula: see text] in spin detectors. A normalization factor introduced to SP analysis eliminates a contribution provoked by deviation of spin sources and leads to a more accurate determination of the spin diffusion length in PTCDA. While SP with Permalloy as a spin source is effective in generating detectable [Formula: see text], the LSSE from yttrium iron garnet shows no convincing sign of spin injection. In addition, spin-flip scattering induced by hybrid states undermining electrical spin injection is negligible in SP. These results are attributed to interfaces between spin sources and PTCDA, indicative of the importance of injection methods and material choices.
تدمد: 1077-3118
0003-6951
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::c353cbf019e6b3e00a659c06800d2acb
https://doi.org/10.1063/5.0106446
رقم الأكسشن: edsair.doi...........c353cbf019e6b3e00a659c06800d2acb
قاعدة البيانات: OpenAIRE
الوصف
تدمد:10773118
00036951