大面积插层二维 Pb/石墨烯异质结构作为产生自旋轨道力矩的平台
材料科学
2024-08-21 v4
摘要
可扩展合成超薄重金属或为下一代自旋电子学实现高效电荷-自旋转换提供平台。本文报道通过限域异质外延（CHet）在 SiC (0001) 上双层石墨烯下方合成空气稳定、外延对准的单层 Pb。衍射、谱学与显微表征揭示，基于 CHet 的 Pb 插层主要呈现斑驳六方超结构，源于有序的 Frenkel-Kontorova 类畴壁网络。该体系的空气稳定性支持非原位自旋力矩铁磁共振（ST-FMR）测量，证明石墨烯/Pb/铁磁体异质结构中的电荷-自旋转换，其有效场比相较对照样品提高 1.5 倍。
引用
@article{arxiv.2205.06859,
title = {Large-Area Intercalated 2D-Pb/Graphene Heterostructure as a Platform for Generating Spin-Orbit Torque},
author = {Alexander Vera and Boyang Zheng and Wilson Yanez and Kaijie Yang and Seong Yeoul Kim and Xinglu Wang and Jimmy C. Kotsakidis and Hesham El-Sherif and Gopi Krishnan and Roland J. Koch and T. Andrew Bowen and Chengye Dong and Yuanxi Wang and Maxwell Wetherington and Eli Rotenberg and Nabil Bassim and Adam L. Friedman and Robert M. Wallace and Chaoxing Liu and Nitin Samarth and Vincent H. Crespi and Joshua A. Robinson},
journal= {arXiv preprint arXiv:2205.06859},
year = {2024}
}
备注
27 pages, 5 figures. Supporting Information included (16 pages, 14 figures, 1 table)