Large-Area Intercalated 2D-Pb/Graphene Heterostructure as a Platform for Generating Spin-Orbit Torque
| Autor: | Vera, Alexander, Zheng, Boyang, Yanez, Wilson, Yang, Kaijie, Kim, Seong Yeoul, Wang, Xinglu, Kotsakidis, Jimmy C., El-Sherif, Hesham, Krishnan, Gopi, Koch, Roland J., Bowen, T. Andrew, Dong, Chengye, Wang, Yuanxi, Wetherington, Maxwell, Rotenberg, Eli, Bassim, Nabil, Friedman, Adam L., Wallace, Robert M., Liu, Chaoxing, Samarth, Nitin, Crespi, Vincent H., Robinson, Joshua A. |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | ACS Nano 2024, 18, 33, 21985-21997 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1021/acsnano.4c04075 |
| Popis: | A scalable platform to synthesize ultrathin heavy metals may enable high efficiency charge-to-spin conversion for next-generation spintronics. Here we report the synthesis of air-stable, epitaxially registered monolayer Pb underneath bilayer graphene on SiC (0001) by confinement heteroepitaxy (CHet). Diffraction, spectroscopy, and microscopy reveal CHet-based Pb intercalation predominantly exhibits a mottled hexagonal superstructure due to an ordered network of Frenkel-Kontorova-like domain walls. The system's air stability enables ex-situ spin torque ferromagnetic resonance (ST-FMR) measurements that demonstrate charge-to-spin conversion in graphene/Pb/ferromagnet heterostructures with a 1.5x increase in the effective field ratio compared to control samples. Comment: 27 pages, 5 figures. Supporting Information included (16 pages, 14 figures, 1 table) |
| Databáze: | arXiv |
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