二维Cr3Te4/WS2/Fe3GeTe2/WTe2磁性存储器,具有无电场切换和低功耗的磁性存储器
Kun He1,2, Bailing Li2,3, Jianhang Nie1
1Hunan Provincial Key Laboratory of Two-Dimensional Materials, School of Physics and Electronics, College of Semiconductors (College of Integrated Circuits), Hunan University, Changsha, 410082, China.
本研究介绍了一种新的方法,用于创建低功率旋转轨道扭矩 (SOT) 磁性存储器,使用2D范德瓦尔斯异构结构. 开发的磁道连接 (MTJs) 提供高耐用性和降低能耗的无电场切换.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术 纳米技术
背景情况:
- 旋转轨道扭矩 (SOT) 磁性存储器为垂直磁性异构 (PMA) 的磁铁提供无磁场切换.
- 高功耗仍然是SOT存储器技术面临的重大挑战.
- 二维 (2D) 范德瓦尔斯 (vdW) 异构结构为先进的存储器提供了可调节的特性.
研究的目的:
- 开发一种低功耗的SOT磁性记忆技术.
- 使用2D vdW异构结构构建磁道连接点 (MTJ).
- 为了证明无现场切换,提高性能和降低能源消耗.
主要方法:
- 通过将2D Cr3Te4/WS2 vdW异构转移到2D Fe3GeTe2 (FGT) 磁铁上来制造MTJ.
- 描述MTJ属性,包括道行为和阻力面积积积分 (RA).
- 评估SOT内存性能,重点关注写入和读取能耗.
主要成果:
- 使用双层WS2实现了15.5kΩ·μm2的低RA产物,表明线性道.
- 显示了高达8kOe的显著反平行窗口.
- 报告SOT-内存设备的低写 (0.3mJ) 和读 (9.7nJ) 能耗.
结论:
- 建议使用2D vdW异构的MTJ构造使低功耗SOT内存成为可能.
- 开发的技术提供了PMA和高循环耐用性的无场切换.
- 这项研究为下一代节能磁性存储器设备铺平了道路.
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