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Structure and Properties of Low Dimensional FeTe Nano Materials under High Pressure
Integrated Ferroelectrics ( IF 0.7 ) Pub Date : 2021-06-30 , DOI: 10.1080/10584587.2021.1911268
Ningning Su 1 , Xiaoqian Wu 1 , Meng Sun 1 , Fang Chen 2 , Jingjing Jin 1
Affiliation  

Abstract

Materials are very important to human society. As a new type of nano materials, new alloy nano materials show unique mechanical, optical, magnetic and other properties, and have great application potential. It has broad application prospects in the next generation of electronic devices, energy storage devices and spin electronics devices. Based on the above background, the purpose of this paper is to study the structure and properties of low dimensional FeTe nanomaterials under high pressure. In this paper, the density functional theory (DFT) calculation is used to study the geometric structure, electronic properties, optical properties and room temperature Pang oxygen ion conductivity of FeTe nanomaterials. In this paper, high quality heterojunctions have been grown on SrTiO3 substrate by molecular beam epitaxy, and the physical properties that may affect the formation of superconductors, such as growth process, electronic structure and charge transfer, have been systematically characterized. The experimental results show that the arrangement of atomic structure and the ratio of chemical elements in the structure are studied by means of reflection high-energy electron diffractometer and transmission electron microscope. In addition, the superconductivity of the sample is tested by transport experiment. It is found that there is a superconductivity phenomenon with a critical temperature of about 12 K in the sample.



中文翻译:

高压下低维FeTe纳米材料的结构与性能

摘要

材料对人类社会非常重要。作为一种新型纳米材料,新型合金纳米材料显示出独特的力学、光学、磁性等性能,具有巨大的应用潜力。在下一代电子器件、储能器件和自旋电子器件方面具有广阔的应用前景。基于上述背景,本文旨在研究高压下低维FeTe纳米材料的结构和性能。本文采用密度泛函理论(DFT)计算研究FeTe纳米材料的几何结构、电子性质、光学性质和室温庞氧离子电导率。在本文中,通过分子束外延在 SrTiO3 衬底上生长了高质量的异质结,并系统地表征了可能影响超导体形成的物理性质,如生长过程、电子结构和电荷转移。实验结果表明,利用反射型高能电子衍射仪和透射电子显微镜研究了原子结构的排列和结构中化学元素的比例。此外,还通过输运实验测试了样品的超导性。发现样品中存在临界温度约为12 K的超导现象。实验结果表明,利用反射型高能电子衍射仪和透射电子显微镜研究了原子结构的排列和结构中化学元素的比例。此外,还通过输运实验测试了样品的超导性。发现样品中存在临界温度约为12 K的超导现象。实验结果表明,利用反射型高能电子衍射仪和透射电子显微镜研究了原子结构的排列和结构中化学元素的比例。此外,还通过输运实验测试了样品的超导性。发现样品中存在临界温度约为12 K的超导现象。

更新日期:2021-06-30
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