期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Direct evidence of two-dimensional electron gas-like band structures in hafnene
1
作者 Shaozhu Xiao Meng Liu +3 位作者 Linfei Li Jiatao Sun Yeliang Wang Shaolong He 《Nano Research》 SCIE EI CSCD 2022年第4期3770-3774,共5页
Two-dimensional(2D)honeycomb-like materials have been widely studied due to their fascinating properties.In particular,2D honeycomb-like transition metal monolayers,which are good 2D ferromagnet candidates,have attrac... Two-dimensional(2D)honeycomb-like materials have been widely studied due to their fascinating properties.In particular,2D honeycomb-like transition metal monolayers,which are good 2D ferromagnet candidates,have attracted intense research interest.The honeycomb-like structure of hafnium,hafnene,has been successfully fabricated on the Ir(111)substrate.However,its electronic structure has not yet been directly elucidated.Here,we report the electronic structure of hafnene grown on the Ir(111)substrate using angle-resolved photoemission spectroscopy(ARPES).Our results indicate that the presence of spin-orbit coupling and Hubbard interaction suppresses the earlier predicted Dirac cones at the K points of the Brillouin zone.The observed band structure of hafnene near the Fermi level is very simple:an electron pocket centered at theΓpoint of the Brillouin zone.This electron pocket shows typical parabolic dispersion,and its estimated electron effective mass and electron density are approximately 1.8_(me)and 7×10^(14)cm^(-2),respectively.Our results demonstrate the existence of 2D electron gas in hafnene grown on the Ir(111)substrate and therefore provide key information for potential hafnene-based device applications. 展开更多
关键词 hafnene MONOLAYER electronic structure angle-resolved photoemission spectroscopy(ARPES) two-dimensional(2D)electron gas
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部