在受约束的相变异构体中观察到的双极切换和突触行为
Jin Suk Oh1, Ho Jin Lee1, Jun Young Choi2
1School of Electrical Engineering, Korea University, Seongbuk-gu, Seoul, Republic of Korea.
Small (Weinheim an der Bergstrasse, Germany)
|February 6, 2026
概括
这项研究引入了一种新的双极相变随机访问存储器 (PCRAM) 结构,使用介层. 这一创新通过模仿突触行为和简化电路设计,实现了高效的神经形态计算.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 计算机科学 计算机科学
背景情况:
- 阶段变换随机访问存储器 (PCRAM) 为下一代存储器提供了高性能.
- 单极PCRAM操作由于复杂的电路需求,限制了其在神经形态应用中的使用.
- 现有的PCRAM技术难以复制复杂的突触行为.
研究的目的:
- 为增强神经形态应用开发一种新的双极PCRAM结构.
- 为了克服单极PCRAM在模仿突触功能方面的局限性.
- 为了简化神经形态设备的外围电路要求.
主要方法:
- 将中间层纳入基于SbTe的PCRAM设备.
- 操作电压,耐力和突触行为模拟的表征.
- 使用实验设备数据进行神经网络模拟.
主要成果:
- 在约 ±0.6 V 的稳定工作电压.
- 增加了超过8 × 104周期的设备耐用性.
- 可靠的模仿突触行为,包括潜能,抑郁和尖端时间依赖的可塑性.
- 通过神经网络模拟,在修改的国家标准与技术研究所数据集上实现了88%的分类准确性.
结论:
- 新的双极PCRAM结构简化了用于神经形态应用的电路设计.
- 这种可扩展的方法证明了高效的神经形态计算的可行性.
- 该设备有效地模仿了人工智能所需的基本突触功能.
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