Electronic structure of single-crystalline graphene grown on Cu/Ni (111) alloy film

doi:10.1088/1674-1056/28/8/086103

Abstract

Graphene with a Dirac cone-like electronic structure has been extensively studied because of its novel transport properties and potential application for future electronic devices. For epitaxially grown graphene, the process conditions and the microstructures are strongly dependent on various substrate materials with different lattice constants and interface energies. Utilizing angle-resolved photoemission spectroscopy, here we report an investigation of the electronic structure of single-crystalline graphene grown on Cu/Ni (111) alloy film by chemical vapor deposition. With a relatively low growth temperature, graphene on Cu/Ni (111) exhibits a Dirac cone-like dispersion comparable to that of graphene grown on Cu (111). The linear dispersions forming Dirac cone are as wide as 2 eV, with the Fermi velocity of approximately 1.1×10⁶ m/s. Dirac cone opens a gap of approximately 152 meV at the binding energy of approximately 304 meV. Our findings would promote the study of engineering of graphene on different substrate materials.

Keywords: single-crystal graphene electronic structure Cu/Ni (111)

Received: 15 April 2019
Revised: 14 May 2019
Accepted manuscript online:

PACS:	61.48.Gh	(Structure of graphene)
	68.65.Pq	(Graphene films)
	71.28.+d	(Narrow-band systems; intermediate-valence solids)
	81.05.ue	(Graphene)

Fund:

Project supported by the National Natural Science Foundation of China (Grant Nos. 51772317, 11604356, and 11704394).

Corresponding Authors: Zhong-Hao Liu, Da-Wei Shen
E-mail: lzh17@mail.sim.ac.cn;dwshen@mail.sim.ac.cn

Cite this article:

Xue-Fu Zhang(张学富), Zhong-Hao Liu(刘中灏), Wan-Ling Liu(刘万领), Xiang-Le Lu(卢祥乐), Zhuo-Jun Li(李卓君), Qing-Kai Yu(于庆凯), Da-Wei Shen(沈大伟), Xiao-Ming Xie(谢晓明) Electronic structure of single-crystalline graphene grown on Cu/Ni (111) alloy film 2019 Chin. Phys. B 28 086103

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Electronic structure of single-crystalline graphene grown on Cu/Ni (111) alloy film

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