在具有相同和非相同脉冲的铁电记忆器中进行重量更新
Suzanne Lancaster1, Maximilien Remillieux1,2, Moritz Engl1
1NaMLab gGmbH, Nöthnitzer Str. 64a, Dresden 01187, Germany.
ACS applied materials & interfaces
|September 12, 2024
概括
铁电道结 (FTJ) 通过限制开关电流,通过使用相同的脉冲实现精确的模拟操作. 这种方法提高了可扩展的memristor应用程序的线性和动态范围.
科学领域:
- 固态物理 固态物理
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 铁电道连接 (FTJ) 是低功耗,可扩展模拟计算的有前途的记忆器.
- 实现精确,相同的脉冲操作对于利用FTJ潜力至关重要.
研究的目的:
- 调查FTJ使用相同和非相同脉冲的重量更新方案.
- 展示一种非线性权重更新方法,在长时间延迟时使用相同的脉冲.
主要方法:
- 在FTJ中进行非线性权重更新的电流限制的实验证明.
- 在1T1C电池中使用在子值/和模式中的晶体管进行电流限制模拟.
- 设备工程来缩小开关峰值以改善线性.
主要成果:
- 在使用电流限制的30μC/cm2动态范围的重量更新中实现了86%的线性.
- 模拟显示,在规模化设备中,具有优化开关峰值的线性>93%.
- 具有可控延迟的相同脉冲可以实现非线性权重更新.
结论:
- 电流限制是一种有效的策略,可以在FTJ中实现精确的线性重量更新.
- 设备工程和晶体管集成可以进一步增强FTJ线性用于神经形态应用.
- 这项工作将基于FTJ的memristors推向可靠的模拟计算.
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