Emergence of nearly flat bands through a kagome lattice embedded in an epitaxial two-dimensional Ge layer with a bitriangular structure
學年 109
學期 1
出版（發表）日期 2020-11-04
作品名稱 Emergence of nearly flat bands through a kagome lattice embedded in an epitaxial two-dimensional Ge layer with a bitriangular structure
作品名稱（其他語言）
著者 A. Fleurence; C.-C. Lee; R. Friedlein; Y. Fukaya; S. Yoshimoto; K. Mukai; H. Yamane; N. Kosugi; J. Yoshinobu; T. Ozaki; Y. Yamada-Takamura
單位
出版者
著錄名稱、卷期、頁數 Phys. Rev. B 102(20), 201102(R)
摘要 Ge atoms segregating on zirconium diboride thin films grown on Ge(111) were found to crystallize into a two-dimensional bitriangular structure, which was recently predicted to be a flat band material through an embedded kagome lattice. Angle-resolved photoelectron emission experiments together with theoretical calculations pointed out the existence of a nearly flat band in spite of non-negligible in-plane long-range hopping and interactions with the substrate. This provides an experimental verification for the fact that a flat band can emerge from the electronic coupling between atoms and not from the geometry of the atomic structure.
關鍵字
語言 en_US
ISSN 2469-9969
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 是
國別 USA
公開徵稿
出版型式 ,電子版
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