Quantum Monte Carlo study of thin parahydrogen films on graphite

Jieru Hu, Massimo Boninsegni
{"title":"Quantum Monte Carlo study of thin parahydrogen films on graphite","authors":"Jieru Hu, Massimo Boninsegni","doi":"arxiv-2403.12637","DOIUrl":null,"url":null,"abstract":"The low-temperature properties of one and two layers of parahydrogen adsorbed\non graphite are investigated theoretically through Quantum Monte Carlo\nsimulations. We adopt a microscopic model that explicitly includes the\ncorrugation of the substrate. We study the phase diagram of a monolayer up to\nsecond layer promotion, and the possible occurrence of superfluidity in the\nsecond layer. We obtain results down to a temperature as low as 8 mK. We find\nsecond-layer promotion to occur at a considerably greater coverage than\nobtained in previous calculations and estimated experimentally; moreover, we\nfind no evidence of a possible finite superfluid response in the second layer,\ndisproving recent theoretical predictions.","PeriodicalId":501211,"journal":{"name":"arXiv - PHYS - Other Condensed Matter","volume":"54 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Other Condensed Matter","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2403.12637","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

The low-temperature properties of one and two layers of parahydrogen adsorbed on graphite are investigated theoretically through Quantum Monte Carlo simulations. We adopt a microscopic model that explicitly includes the corrugation of the substrate. We study the phase diagram of a monolayer up to second layer promotion, and the possible occurrence of superfluidity in the second layer. We obtain results down to a temperature as low as 8 mK. We find second-layer promotion to occur at a considerably greater coverage than obtained in previous calculations and estimated experimentally; moreover, we find no evidence of a possible finite superfluid response in the second layer, disproving recent theoretical predictions.
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
石墨上对氢薄膜的量子蒙特卡罗研究
我们通过量子蒙特卡洛模拟从理论上研究了吸附在石墨上的一层和两层对氢的低温特性。我们采用的微观模型明确包含了基底的波纹。我们研究了单层到第二层的相图,以及在这些第二层中可能出现的超流体。我们得到了温度低至 8 mK 的结果。我们发现第二层促进发生的覆盖率比以前计算和实验估计的要大得多;此外,我们没有发现第二层可能存在有限超流体响应的证据,这推翻了最近的理论预测。
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
自引率
0.00%
发文量
0
期刊最新文献
Neuromorphic Spintronics Corotation of two quantized vortices coupled with collective modes in self-gravitating Bose-Einstein condensates Tuned ionic mobility by Ultrafast-laser pulses in Black Silicon CAVERNAUTE: a design and manufacturing pipeline of a rigid but foldable indoor airship aerial system for cave exploration Switchable Crystalline Islands in Super Lubricant Arrays
×
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