氧气间接的拉德尔斯登-波珀尼基酸盐:巨大的电阻切换和新兴的多电子相控
Yufei Yao1, Yanan Zhao1, Ping Li1
1State Key Laboratory for Manufacturing Systems Engineering, Collaborative Innovation Center of High-End Manufacturing Equipment, Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, China. zhaoyanan1984@xjtu.edu.cn.
Materials horizons
|December 23, 2025
概括
研究人员开发了一种新的方法来控制稀土尼基酸盐中的多个电子状态,使用氧气间歇. 这种技术显著提高了电阻调制,为先进的电子设备铺平了道路.
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
- 固态化学 固态化学
背景情况:
- 稀土酸盐具有可调节的多电子相,这使得它们对神经形态计算和传感器具有吸引力.
- 目前的调制方法产生单个电子状态,限制了金属绝缘器过渡和设备性能.
研究的目的:
- 探索一种用于诱导稀土尼基酸盐多个电子状态的新方法.
- 为了研究氧介质对 (NdNiO3) n:NdO样本电子性质的影响.
主要方法:
- 氧气火被用来将氧离子插入 (NdNiO3) n:NdO.O 的拉德尔斯登-波珀结构.
- 在250K进行电阻测量,以量化电子状态中的调制.
- 进行了理论分析,以了解观察到的电子转换的潜在机制.
主要成果:
- 氧干成功诱导了 (NdNiO3) n:NdO样本中的多个电子状态.
- 在250K时,在电阻中实现了7个数量级的调制.
- 观察到非费米液体的行为与2.75的权力定律指数,与矿NdNiO3.3不同.
- 理论分析证实,间隔氧离子驱动了从抗铁磁绝缘体到铁磁金属的过渡.
结论:
- 氧干是一种有效的策略,可以在Ruddlesden-Popper尼基酸盐中实现多电子状态.
- 这种方法显著增强了电阻调制,与传统方法相比,它提供了独特的电子特性.
- 这些发现为氧离子动态提供了洞察力,有助于开发用于先进电子的强相关氧化物.
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