Thermal transport in composition graded silicene/germanene heterostructures

IF 1.5 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY Chinese Physics B Pub Date : 2023-12-13 DOI:10.1088/1674-1056/ad1500
Zengqiang Cao, Chaoyu Wang, Honggang Zhang, Bo You, Yuxiang Ni
{"title":"Thermal transport in composition graded silicene/germanene heterostructures","authors":"Zengqiang Cao, Chaoyu Wang, Honggang Zhang, Bo You, Yuxiang Ni","doi":"10.1088/1674-1056/ad1500","DOIUrl":null,"url":null,"abstract":"\n Through equilibrium and non-equilibrium molecular dynamics simulations, we have demonstrated the inhibitory effect of interface composition graded on thermal transport behavior in lateral heterostructures. Specifically, we investigated the influence of composition gradient length and heterogeneous particles at the silicene/germanene heterostructure interface on heat conduction. Our results indicate that composition graded at the interface diminishes the thermal conductivity of the heterostructure, with a further reduction observed as the length increases, while the effect of the heterogeneous particles can be considered negligible. To unveil the influence of composition graded at the interface on thermal transport, we conducted phonon analysis and identified the presence of phonon localization within the interface composition graded region. Through these analyses, we have determined that the decrease in thermal conductivity is correlated with phonon localization within the heterostructure, where a stronger degree of phonon localization signifies poorer thermal conductivity in the material. Our research findings not only contribute to understanding the impact of interface gradient-induced phonon localization on thermal transport but also offer insights into the modulation of thermal conductivity in heterostructures.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":"93 S86","pages":""},"PeriodicalIF":1.5000,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Physics B","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1088/1674-1056/ad1500","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

Abstract

Through equilibrium and non-equilibrium molecular dynamics simulations, we have demonstrated the inhibitory effect of interface composition graded on thermal transport behavior in lateral heterostructures. Specifically, we investigated the influence of composition gradient length and heterogeneous particles at the silicene/germanene heterostructure interface on heat conduction. Our results indicate that composition graded at the interface diminishes the thermal conductivity of the heterostructure, with a further reduction observed as the length increases, while the effect of the heterogeneous particles can be considered negligible. To unveil the influence of composition graded at the interface on thermal transport, we conducted phonon analysis and identified the presence of phonon localization within the interface composition graded region. Through these analyses, we have determined that the decrease in thermal conductivity is correlated with phonon localization within the heterostructure, where a stronger degree of phonon localization signifies poorer thermal conductivity in the material. Our research findings not only contribute to understanding the impact of interface gradient-induced phonon localization on thermal transport but also offer insights into the modulation of thermal conductivity in heterostructures.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
成分分级硅/锗异质结构中的热传输
通过平衡和非平衡分子动力学模拟,我们证明了界面成分梯度对横向异质结构热传输行为的抑制作用。具体来说,我们研究了硅/锗异质结构界面上的成分梯度长度和异质颗粒对热传导的影响。结果表明,界面上的成分梯度会降低异质结构的热导率,随着长度的增加,热导率会进一步降低,而异质颗粒的影响可以忽略不计。为了揭示界面成分分级对热传输的影响,我们进行了声子分析,确定了界面成分分级区域内存在声子定位。通过这些分析,我们确定热导率的降低与异质结构内的声子定位相关,声子定位程度越高,材料的热导率越差。我们的研究成果不仅有助于理解界面梯度诱导的声子局域化对热传输的影响,还为异质结构中热导率的调节提供了见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Chinese Physics B
Chinese Physics B 物理-物理:综合
CiteScore
2.80
自引率
23.50%
发文量
15667
审稿时长
2.4 months
期刊介绍: Chinese Physics B is an international journal covering the latest developments and achievements in all branches of physics worldwide (with the exception of nuclear physics and physics of elementary particles and fields, which is covered by Chinese Physics C). It publishes original research papers and rapid communications reflecting creative and innovative achievements across the field of physics, as well as review articles covering important accomplishments in the frontiers of physics. Subject coverage includes: Condensed matter physics and the physics of materials Atomic, molecular and optical physics Statistical, nonlinear and soft matter physics Plasma physics Interdisciplinary physics.
期刊最新文献
Coupling and characterization of a Si/SiGe triple quantum dot array with a microwave resonator Probing nickelate superconductors at atomic scale: A STEM review In-situ deposited anti-aging TiN capping layer for Nb superconducting quantum circuits Quantum confinement of carriers in the type-I quantum wells structure Preparation and magnetic hardening of low Ti content (Sm,Zr)(Fe,Co,Ti)12 magnets by rapid solidification non-equilibrium method
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1