{"title":"Nanoscale inhomogeneity and the evolution of correlation strength in FeSe\\(_{1-x}\\)S\\(_x\\)","authors":"Yu Liu, Aifeng Wang, Qianheng Du, Lijun Wu, Yimei Zhu, Cedomir Petrovic","doi":"10.1186/s40580-023-00405-2","DOIUrl":null,"url":null,"abstract":"<div><p>We report a comprehensive study of the nanoscale inhomogeneity and disorder on the thermoelectric properties of FeSe<span>\\(_{1-x}\\)</span>S<span>\\(_x\\)</span> (<span>\\(0 \\le x \\le 1\\)</span>) single crystals and the evolution of correlation strength with S substitution. A hump-like feature in temperature-dependent thermpower is enhanced for <i>x</i> = 0.12 and 0.14 in the nematic region with increasing in orbital-selective electronic correlations, which is strongly suppressed across the nematic critical point and for higher S content. Nanoscale Se/S atom disorder in the tetrahedral surroundings of Fe atoms is confirmed by scanning transmission electron microscopy measurements, providing an insight into the nanostructural details and the evolution of correlation strength in FeSe<span>\\(_{1-x}\\)</span>S<span>\\(_x\\)</span>.</p></div>","PeriodicalId":712,"journal":{"name":"Nano Convergence","volume":"10 1","pages":""},"PeriodicalIF":13.4000,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10746694/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Convergence","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1186/s40580-023-00405-2","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
We report a comprehensive study of the nanoscale inhomogeneity and disorder on the thermoelectric properties of FeSe\(_{1-x}\)S\(_x\) (\(0 \le x \le 1\)) single crystals and the evolution of correlation strength with S substitution. A hump-like feature in temperature-dependent thermpower is enhanced for x = 0.12 and 0.14 in the nematic region with increasing in orbital-selective electronic correlations, which is strongly suppressed across the nematic critical point and for higher S content. Nanoscale Se/S atom disorder in the tetrahedral surroundings of Fe atoms is confirmed by scanning transmission electron microscopy measurements, providing an insight into the nanostructural details and the evolution of correlation strength in FeSe\(_{1-x}\)S\(_x\).
我们报告了对 FeSe[式：见正文]S[式：见正文]（[式：见正文]）单晶热电性能的纳米级不均匀性和无序性以及相关强度随 S 取代的演变的全面研究。当 x = 0.12 和 0.14 时，在向列区，随着轨道选择性电子相关的增加，随温度变化的热功率中的驼峰状特征增强，而当跨越向列临界点和 S 含量较高时，该特征被强烈抑制。通过扫描透射电子显微镜测量证实了铁原子四面体周围的纳米级 Se/S 原子无序，从而深入了解了 FeSe[式：见正文]S[式：见正文]的纳米结构细节和相关强度的演变。
期刊介绍：
Nano Convergence is an internationally recognized, peer-reviewed, and interdisciplinary journal designed to foster effective communication among scientists spanning diverse research areas closely aligned with nanoscience and nanotechnology. Dedicated to encouraging the convergence of technologies across the nano- to microscopic scale, the journal aims to unveil novel scientific domains and cultivate fresh research prospects.
Operating on a single-blind peer-review system, Nano Convergence ensures transparency in the review process, with reviewers cognizant of authors' names and affiliations while maintaining anonymity in the feedback provided to authors.
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