低压驱动的高速和低能量的记忆操作由新的TiTe2/Sc0.3Sb2Te3相变异构造
Mingjian Zhong1, Yonghui Zheng2, Yongyong Che1
1College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518071, China.
Small (Weinheim an der Bergstrasse, Germany)
|September 25, 2025
概括
这项研究引入了一种新的TiTe2/Sc0.3Sb2Te3异构结构用于相位变换内存 (PCM),显著提高了设置速度并减少了重置能量. 这一突破解决了先进半导体芯片开发中的关键性能限制.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 纳米技术纳米技术
背景情况:
- 阶段变换内存 (PCM) 面临着诸如缓慢的设置速度,高的重置能量和多层电阻漂移等挑战.
- 这些缺点阻碍了高容量存储和高并行计算芯片的开发,特别是对于16-40nm以下的节点,需要低的驱动偏差.
研究的目的:
- 设计和研究一种创新的TiTe2/Sc0.3Sb2Te3异构结构,以克服PCM性能限制.
- 在低压条件下实现同时提高设置速度,重置能量和多层电阻稳定性.
主要方法:
- 制造基于异构的TiTe2/Sc0.3Sb2Te3PCM细胞.
- 在现场以电脉冲驱动的微观观察相位过渡机制.
- 电气性能特征,包括设置速度,重置能量和多层电阻漂移.
主要成果:
- 异构结构显示了最低的重置能量 (≈6.40 pJ bit-1).
- 在低压模式 (< ≈2.5 V) 中实现了最快的设置速度 (≈4 ns),在更高偏差下具有子ns能力 (≈0.6 ns).
- 显示了最小的多层电阻漂移 (≈10−4-3 × 10−3),表现优于现有的细胞.
结论:
- TiTe2 / Sc0.3Sb2Te3异构结构为卓越的PCM性能提供了一个可行的解决方案.
- 了解可逆的二维相变机制是增强电气性能的关键.
- 这项工作为设计用于先进记忆应用的新石素异构结构提供了指导.
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