90周年专栏 | 选区外延生长的PbTe-超导杂化纳米线：一个可能实 …
2024年2月25日 · 近年来，一个新的马约拉纳纳米线候选体系——IV-VI族半导体PbTe-超导杂化纳米线吸引了很大关注并获得了快速的研究进展。 PbTe的介电常数巨大，且具有晶格匹配的衬底，这些优势使其有潜力突破纳米线样品质量提升的瓶颈，成为马约拉纳零能模的研究和拓扑量子计算实现的理想平台。 本文将简单介绍最近几年在PbTe纳米线和PbTe-超导杂化纳米线器件的选区 分子束外延 生长、输运性质研究方面取得的重要进展，并对这种新的马约拉纳纳米线候选体 …
PbTe|CdTe Core|Shell Particles by Cation Exchange, a HR-TEM study
2009年2月17日 · We use high-resolution transmission electron microscopy to assess the formation of PbTe|CdTe and PbSe|CdSe core|shell nanoparticles by cationic exchange. We find that core and shell have the same c...
Two-dimensional electron gas at the metastable twisted interfaces of ...
2013年6月21日 · Our density-functional theory modeling reveals that the epitaxially grown CdTe/PbTe (111) heterostructures form metastable twisted interfaces that exhibit unusual structural and electronic properties: (1) The PbTe epilayer on CdTe (111) substrates is structurally highly distorted from the rocksalt structure within the first \ensuremath {\sim}4. ...
High-Performance Room-Temperature Terahertz Photodetection …
5 天之前 · The spontaneously formed 2-dimensional electron gas (2DEG) at the CdTe/PbTe interface provides a superior transport channel characterized by high carrier concentration, low scattering, and high mobility.
Self-organization process in crystalline PbTe/CdTe multilayer ...
2018年5月30日 · In the present paper we show that the alternating deposition of ultra-thin layers (a few atomic monolayers) of PbTe and CdTe reveals distinct differences in the morphology of the samples compared to the morphology of the multilayer structures grown with thicker layers.
Crystal and electronic structure of PbTe/CdTe nanostructures
2011年2月10日 · In this article, a systematic theoretical study of PbTe-CdTe pseudo-binary systems is presented. Using ab initio and tight-binding methods, three kinds of inclusions are studied: the PbTe NWs in CdTe matrix; the CdTe A-QDs; and anti-wires (A-NWs) in PbTe matrix.
Molecular beam epitaxy and characterizations of PbTe grown …
2015年6月15日 · In this paper, heteroepitaxy of high-quality PbTe crystal on GaAs (211) using CdTe/ZnTe buffers by molecular beam epitaxy is presented for the first time. Optimal growth parameters have been obtained by both in-situ and ex-situ characterizations.
PbTe/CdTe材料的外延生长及物理特性的研究 - 百度学术
CdTe/PbTe异质结构是研究PbTe光电及热电性质的一个重要材料体系,这源于二者具有共同的阴离子 (Te)、相近的晶格常数、迥异的晶格结构 (PbTe:NaCl结构;CdTe:闪锌矿结构)及较大的禁带宽度差异等独特的物理性质。
The lattice-structure-mismatched CdTe/PbTe heterostructures are emerging materials with unique properties and promising applications in midinfrared optoelectronics and spintronics. High-density two-dimensional electron gas at the metastable twisted interfaces of CdTe/PbTe (111) is investigated experimentally and theoretically.
PbTe/CdTe材料的外延生长及物理特性的研究-学位-万方数据知识 …
CdTe/PbTe异质结构是研究PbTe光电及热电性质的一个重要材料体系，这源于二者具有共同的阴离子 (Te）、相近的晶格常数、迥异的晶格结构 (PbTe:NaCl结构;CdTe:闪锌矿结构)及较大的禁带宽度差异等独特的物理性质。