兴奋剂对PbPdO2薄膜中的电子和量子运输的影响
Liqiang Zeng1,2, Wenti Guo1,2, Hai Jia1,2
1Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials, College of Physics and Energy, Fujian Normal University Fuzhou 350117 China.
RSC advances
|January 30, 2024
概括
磁离子兴奋剂将氧化 (PbPdO2) 转化为无旋隙半导体,增强巨大电阻 (CER). 这项研究详细介绍了PbPdO2薄膜中的Mn兴奋剂,揭示了增加的CER和新的量子传输现象.
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
- 薄膜技术 薄膜技术
背景情况:
- PbPdO2是一种无间隙半导体,有可能具有独特的电子特性.
- 磁离子兴奋剂可以诱导无旋隙半导体结构.
- 了解兴奋剂效应对于开发新型电子材料至关重要.
研究的目的:
- 为了研究Mn-doped PbPdO2薄膜的结构性,电阻性和磁阻性.
- 阐明由Mn兴奋剂诱导的巨大电阻 (CER) 背后的机制.
- 探索量子传输行为,包括弱局部化和反局部化,在这些兴奋剂电影.
主要方法:
- 使用激光脉冲沉积 (PLD) 制备具有 (002) 首选方向的PbPd1-xMnxO2薄膜.
- 结构性,电电阻和磁电阻性质的系统性表征.
- 第一原则计算和现场X射线光电子光谱 (XPS) 了解兴奋剂机制和频段间隙变化.
主要成果:
- 用Mn的PbPdO2薄膜表现出电流诱导的正极电阻 (CER),随着Mn度的增加而增加.
- 这些CER值明显高于未使用PbPdO2膜的CER值.
- 因氧空缺而导致带间隙的变化,导致弱局部化 (WL) 和弱反局部化 (WAL) 量子传输现象,随着Mn度的增加,从WAL过渡到WL.
结论:
- 胺兴奋剂有效地增强了PbPdO2薄膜中的CER,与带隙修改和氧气空缺有关.
- 这项研究揭示了新的量子运输行为,包括由Mn兴奋剂驱动的WL/WAL效应的过渡.
- 氧化物拓绝缘体PbPdO2通过离子兴奋剂显示出新型量子现象的潜力.
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