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Discovery of 2D Anisotropic Dirac Cones
Author(s) -
Feng Baojie,
Zhang Jin,
Ito Suguru,
Arita Masashi,
Cheng Cai,
Chen Lan,
Wu Kehui,
Komori Fumio,
Sugino Osamu,
Miyamoto Koji,
Okuda Taichi,
Meng Sheng,
Matsuda Iwao
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201704025
Subject(s) - borophene , monolayer , dirac (video compression format) , dirac fermion , anisotropy , boron , photoemission spectroscopy , condensed matter physics , massless particle , materials science , physics , nanotechnology , graphene , quantum mechanics , x ray photoelectron spectroscopy , nuclear magnetic resonance , nuclear physics , neutrino
2D anisotropic Dirac cones are observed in χ 3 borophene, a monolayer boron sheet, using high‐resolution angle‐resolved photoemission spectroscopy. The Dirac cones are centered at the X and X′ points. The data also reveal that the hybridization between borophene and Ag(111) is very weak, which explains the preservation of the Dirac cones. As χ 3 borophene has been predicated to be a superconductor, the results may stimulate further research interest in the novel physics of borophene, such as the interplay between Cooper pairs and the massless Dirac fermions.