Hailing Jiang, Tao Wang, Zhenyu Zhang, Ruochen Shi, Xifan Xu, Bowen Sheng, Fang Liu, Weikun Ge, Ping Wang, Bo Shen, Peng Gao, Lucas R Lindsay, Xinqiang Wang
{"title":"Single-atom-resolved vibrational spectroscopy of a dislocation","authors":"Hailing Jiang, Tao Wang, Zhenyu Zhang, Ruochen Shi, Xifan Xu, Bowen Sheng, Fang Liu, Weikun Ge, Ping Wang, Bo Shen, Peng Gao, Lucas R Lindsay, Xinqiang Wang","doi":"arxiv-2409.10628","DOIUrl":null,"url":null,"abstract":"Phonon resistance from dislocation scattering is often divided into\nshort-range core interactions and long-range strain field interactions. Using\nelectron energy-loss spectroscopy on a GaN dislocation, we report observations\nof vibrational modes localized at specific core atoms (short-range) and\nstrain-driven phonon energy shifts around the dislocation (long-range). Ab\ninitio calculations support these findings and draw out additional details.\nThis study reveals atomically resolved vibrational spectra of dislocations,\nthus offering insights for engineering improved material functionalities.","PeriodicalId":501234,"journal":{"name":"arXiv - PHYS - Materials Science","volume":"33 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Materials Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.10628","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
Phonon resistance from dislocation scattering is often divided into
short-range core interactions and long-range strain field interactions. Using
electron energy-loss spectroscopy on a GaN dislocation, we report observations
of vibrational modes localized at specific core atoms (short-range) and
strain-driven phonon energy shifts around the dislocation (long-range). Ab
initio calculations support these findings and draw out additional details.
This study reveals atomically resolved vibrational spectra of dislocations,
thus offering insights for engineering improved material functionalities.