Dirac Fermions in Blue Phosphorene Monolayer

Youness Kaddar; Wei Zhang; Hanna EnriquezYannick J. DappeAzzedine BendounanGerald DujardinOmar MounkachiAbdallah El kenzAbdelilah BenyoussefAbdelkader KaraHamid Oughaddou

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Dirac Fermions in Blue Phosphorene Monolayer

机译：Dirac Fermions in Blue Phosphorene Monolayer

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2D materials beyond graphene and in particular 2D semiconductors have raised interest due to their unprecedented electronic properties, such as high carrier mobility or tunable bandgap. Blue phosphorene is an allotrope of black phosphorene that resembles graphene as it presents a honeycomb structure. However, it is known to have semiconductor character and the crucial point is to determine whether this hexagonal phase of phosphorene presents Dirac fermions as in graphene. Here, the first compelling experimental evidence of Dirac fermions in blue phosphorene layer grown on Cu(111) surface is presented. The results highlight the formation of a highly ordered blue phosphorene sheet with a clear Dirac cone at the high symmetry points of the Brillouin Zone. The charge carriers behave as massless relativistic particles. Therefore, all the expectations held for graphene, such as high-speed electronic devices based on ballistic transport at room temperature, may also be applied to blue phosphorene.

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《Advanced functional materials》 |2023年第21期|2213664.1-2213664.7|共7页
作者
Youness Kaddar; Wei Zhang; Hanna EnriquezYannick J. DappeAzzedine BendounanGerald DujardinOmar MounkachiAbdallah El kenzAbdelilah BenyoussefAbdelkader KaraHamid Oughaddou;
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CNRS Institut des Sciences Moleculaires d’Orsay (ISMO) Universite Paris-Saclay Bat. 520, 91405 Orsay, France,Departement de physique CY Cergy Paris Universite F-95031 Cergy-Pontoise Cedex, France;

Laboratory of Condensed Matter and Interdisciplinary Sciences (LaMCScI) B.P. 1014 Faculty of Science Mohammed V University Rabat 10100, Morocco;

CNRS Institut des Sciences Moleculaires d’Orsay (ISMO) Universite Paris-Saclay Bat. 520, 91405 Orsay, FranceSPEC, CEA, CNRS Universite Paris-Saclay 91191 Gif-sur-Yvette, FranceTEMPO Beamline, Synchrotron SOLEIL L’Orme des Merisiers Saint-Aubin B.P.48, F-91192 Gif-sur-Yvette, FranceLaboratory of Condensed Matter and Interdisciplinary Sciences (LaMCScI) B.P. 1014 Faculty of Science Mohammed V University Rabat 10100, Morocco,MSDA Mohammed Ⅵ Polytechnic University Lot 660, Hay Moulay Rachid Ben Guerir 43150, MoroccoLaboratory of Condensed Matter and Interdisciplinary Sciences (LaMCScI) B.P. 1014 Faculty of Science Mohammed V University Rabat 10100, Morocco,Academy of Science and Technology Rabat 10100, MoroccoDepartment of Physics University of Central Florida Orlando, FL 32816, USA,IRMC Imam Abdulrahman Bin Faisal University Dammam 32210, Saudi Arabia;

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正文语种英语
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2D materials; Dirac fermions; high resolution photoelectron spectroscopy; phosphorenes; scanning tunneling microscopy;

Dirac Fermions in Blue Phosphorene Monolayer

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