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功能化MXene MXT(M = Ti、Zr、Sc;X = C;T = O、F)纳米带/条纹状硼烯纳米带异质结的电子特性

The electronic properties of functionalized MXene MXT (M = Ti, Zr, Sc; X = C; T = O, F) nanoribbon/striped borophene nanoribbon heterojunctions.

作者信息

Shirazinia Mahdi, Faizabadi Edris

机构信息

School of Physics, Iran University of Science and Technology Tehran Iran

出版信息

Nanoscale Adv. 2025 May 2;7(11):3546-3557. doi: 10.1039/d4na00629a. eCollection 2025 May 27.

Abstract

The van der Waals heterojunctions and heterostructures developed from diverse materials demonstrate unparalleled potential by combining the favorable properties of their structural layers. In this investigation, we initially showcase the findings and evaluations derived from Density Functional Theory (DFT) of selected functionalized MXene nanoribbons (TiCO, ZrCO, and ScCF), along with four types of striped borophene nanoribbons. Nanoribbons come in two forms (armchair and zigzag) and have a variety of widths. Except for 9-, 12-, and 15-MZNRs, there are no band gaps on MXene nanoribbons arranged in a zigzag pattern. Contrastingly, band gaps emerge in MXene nanoribbons with armchair-shaped edges. It is also discovered that every selected SBNR is metallic in nature. Lastly, we carried out a computational analysis of the electronic characteristics of the MNR/SBNR heterojunctions. The significant thermodynamic stability of MNR/SBNR heterojunctions is suggested by the small lattice mismatch in the periodic direction and the negative formation energies. Our research demonstrates that all heterojunction samples exhibit metallic behavior. Additionally, we observed significant changes in total magnetization when applying electric fields of different directions and amplitudes to the heterojunction samples. These findings present promising avenues for enhancing and controlling multiferroics or electrically controllable antiferromagnets, as well as advancing spintronic devices. Moreover, they hold potential for memory devices and sensors.

摘要

由多种材料制成的范德华异质结和异质结构,通过结合其结构层的优良特性展现出了无与伦比的潜力。在本研究中,我们首先展示了从选定的功能化MXene纳米带(TiCO、ZrCO和ScCF)以及四种条纹状硼烯纳米带的密度泛函理论(DFT)得出的研究结果和评估。纳米带有两种形式(扶手椅型和锯齿型)且具有多种宽度。除了9-MZNR、12-MZNR和15-MZNR外,呈锯齿形排列的MXene纳米带没有带隙。相反,具有扶手椅形边缘的MXene纳米带会出现带隙。还发现每个选定的SBNR本质上都是金属性的。最后,我们对MNR/SBNR异质结的电子特性进行了计算分析。周期性方向上的小晶格失配和负形成能表明了MNR/SBNR异质结具有显著的热力学稳定性。我们的研究表明,所有异质结样品都表现出金属行为。此外,当对异质结样品施加不同方向和幅度的电场时,我们观察到总磁化强度有显著变化。这些发现为增强和控制多铁性材料或电可控反铁磁体以及推进自旋电子器件提供了有前景的途径。此外,它们在存储器件和传感器方面也具有潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d56b/12108783/c05657883f60/d4na00629a-f1.jpg

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