title: Direct Evidence of Dirac Signature in Bilayer Germanene Islands on Cu(111).
abstract: Bernal-stacked bilayer germanene with a stable buckled honeycomb structure has been successfully synthesized on Cu(111). Structural and electronic characterizations as well as theoretical calculations unequivocally demonstrate for the first time the presence of a nearly linear energy dispersion in the vicinity of the Fermi energy, as expected of the Dirac signature for theoretical freestanding germanene.
authors.affiliation: State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.
authors.forename: Zhihui
authors.initials: Z
authors.lastname: Qin
authors.affiliation: Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors.forename: Jinbo
authors.initials: J
authors.lastname: Pan
authors.affiliation: State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.
authors.forename: Shuangzan
authors.initials: S
authors.lastname: Lu
authors.affiliation: Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Shao
authors.affiliation: Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors.forename: Yeliang
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors.forename: Shixuan
authors.initials: S
authors.lastname: Du
authors.affiliation: Institute of Physics and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors.forename: Hong-Jun
authors.initials: HJ
authors.lastname: Gao
authors.affiliation: State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.
authors.forename: Gengyu
authors.initials: G
authors.lastname: Cao
keywords: Bernal stacking; bilayer; epitaxial growth; germanene; scanning tunneling microscopy