典型文献
Dehydrogenation Induced Formation of Chiral Core-Shell Arrays of Melamine on Ag(111)
文献摘要：
The structural evolution of supramolecular phases of melamine on Ag(111)surface as a function of annealing temperature is investigated by employing low-temperature scanning tunneling microscopy/spectroscopy(LT-STM/STS).It is found that partial deprotonation of the melamine molecules leads to formation of distinct types of ordered supramolecular arrangements.Apart from two previously reported phases(α and β),a new phase comprising arrays of close-packed hexagonal core-shell-type clusters is identified for the first time.Based on high-resolution STM images as well as structural modeling,we show that the new phase presents a two-level hierarchical order and chirality is expressed at both levels.Using STS characterization,we further reveal that the chiral arrangement of the clusters confines surface electrons into a honeycomb pathway with handedness,which could give rise to novel interfacial electronic properties such as Dirac fermions as well as flat band.
文献关键词：
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作者姓名：
Hexu Zhang;Yuanhao Lyu;Wenqi Hu;Lan Chen;Yi-Qi Zhang;Kehui Wu
作者机构：
Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Materials Laboratory,Dongguan 523808,China
文献出处：
引用格式：
[1]Hexu Zhang;Yuanhao Lyu;Wenqi Hu;Lan Chen;Yi-Qi Zhang;Kehui Wu-.Dehydrogenation Induced Formation of Chiral Core-Shell Arrays of Melamine on Ag(111))[J].中国物理快报（英文版）,2022(11):56-71
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Dehydrogenation,Induced,Formation,Chiral,Core,Shell,Arrays,Melamine,Ag,structural,evolution,supramolecular,phases,melamine,surface,function,annealing,temperature,investigated,by,employing,low,scanning,tunneling,microscopy,spectroscopy,LT,STM,STS,It,found,that,partial,deprotonation,molecules,leads,formation,distinct,types,ordered,arrangements,Apart,from,two,previously,reported,new,comprising,arrays,close,packed,hexagonal,core,shell,clusters,identified,first,Based,high,resolution,images,well,modeling,show,presents,hierarchical,chirality,expressed,both,levels,Using,characterization,further,reveal,confines,electrons,into,honeycomb,pathway,handedness,which,could,give,rise,novel,interfacial,electronic,properties,such,Dirac,fermions,flat,band
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0.703625
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