电压驱动的运动为新型有机螺旋式记忆器
Abir Nachawaty1, Tongxin Chen1, Fatima Ibrahim2
1Institut Jean Lamour, CNRS-Université de Lorraine, UMR 7198, Nancy, 54011, France.
Advanced materials (Deerfield Beach, Fla.)
|June 7, 2024
概括
这项研究表明,在一个新的La0.6Sr0.4MnO3/多乙烯化物) /Co memristor中,巨型道磁阻 (TMR) 为-266%. 在有机屏障中,电压驱动的运动会导致显著的电阻变化,从而使高性能多功能设备成为可能.
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:
- 将道磁电阻 (TMR) 集成到memristors中对于多功能设备,如多态存储器和可调节的突触可塑性至关重要.
- 现有的多铁道交叉点显示有限的TMR,通常低于100%.
研究的目的:
- 在一个La0.6Sr0.4MnO3 (LSMO) /多乙烯化物) /PVDF/Co memristor中显示显著增强的TMR效应.
- 研究观察到的TMR背后的机制,重点关注在有机屏障内的电压驱动的离子运动.
主要方法:
- 用薄的有机道屏障制造LSMO/PVDF/Co记忆装置.
- 用于测量在不同电压下TMR和电阻变化的电气表征.
- 分析 (F) 运动在PVDF层对TMR性能的影响.
主要成果:
- 在LSMO/PVDF/Co记忆器中实现了巨大的TMR -266%.
- 在PVDF中发现的电压驱动运动导致在纳米秒时间尺度上电阻变化高达106%.
- 证明从PVDF层中去除可以通过抑制双极场显著增强TMR.
- 通过极化电压显示TMR可调性,这是由于在LSMO/PVDF接口的化剂诱导的自旋极化修改.
结论:
- 有机memristor表现出创纪录的高TMR,超过了传统的多铁道交叉点.
- 这些发现突显了有机材料中电压驱动的离子运动对于高级记忆功能的潜力.
- 这项研究为开发用于数据存储和神经形态计算应用的高性能多功能设备铺平了道路.
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