文献类型：期刊文献

英文题名：Tuning two-dimensional band structure of Cu(111) surface-state electrons that interplay with artificial supramolecular architectures

作者：Wang, Shiyong[1];Wang, Weihua[1];Tan, Liang Z.[2,3];Li, Xing Guang[4,5];Shi, Zilang[1];Kuang, Guowen[1];Liu, Pei Nian[4,5];Louie, Steven G.[2,3,6];Lin, Nian[1]

机构：[1]Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China;[2]Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA;[3]Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA;[4]E China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China;[5]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[6]Hong Kong Univ Sci & Technol, Inst Adv Study, Hong Kong, Hong Kong, Peoples R China

年份：2013

卷号：88

期号：24

外文期刊名：PHYSICAL REVIEW B

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000328687700002)】；

基金：This work is supported in part by the Hong Kong RGC (D-HK008/11T) and the U.S. National Science Foundation Grant No. DMR1-1006184. S. G. L. acknowledges support of a Simons Foundation Fellowship in Theoretical Physics. We acknowledge the assistance of the XSEDE computational cluster resource provided by NICS (kraken), supported by the National Science Foundation

语种：英文

摘要：We report on the modulation of two-dimensional (2D) bands of Cu(111) surface-state electrons by three isostructural supramolecular honeycomb architectures with different periodicity or constituent molecules. Using Fourier-transformed scanning tunneling spectroscopy and model calculations, we resolved the 2D band structures and found that the intrinsic surface-state band is split into discrete bands. The band characteristics including band gap, band bottom, and bandwidth are controlled by the network unit cell size and the nature of the molecule-surface interaction. In particular, Dirac cones emerge where the second and third bands meet at the K points of the Brillouin zone of the supramolecular lattice.