Dirac Fermions in Blue Phosphorene Monolayer

被引：26

作者：

Kaddar, Youness ^{[1
]}

Zhang, Wei ^{[2
]}

Enriquez, Hanna ^{[2
]}

Dappe, Yannick J. ^{[3
]}

Bendounan, Azzedine ^{[4
]}

Dujardin, Gerald ^{[2
]}

Mounkachi, Omar ^{[1
,5
]}

El Kenz, Abdallah ^{[1
]}

Benyoussef, Abdelilah ^{[1
,6
]}

Kara, Abdelkader ^{[7
,8
]}

Oughaddou, Hamid ^{[2
,9
]}

机构：

[1] Mohammed V Univ, Fac Sci, Lab Condensed Matter & Interdisciplinary Sci LaMCS, BP 1014, Rabat 10100, Morocco

[2] Univ Paris Saclay, Inst Sci Mol Orsay ISMO, CNRS, Bat 520, F-91405 Orsay, France

[3] Univ Paris Saclay, SPEC, CEA, CNRS, F-91191 Gif Sur Yvette, France

[4] Synchrotron SOLEIL, TEMPO Beamline, L Orme Merisiers St Aubin BP48, F-91192 Gif Sur Yvette, France

[5] Polytech Univ, Hay Moulay Rachid, Lot 660, Ben Guerir 43150, Morocco

[6] Acad Sci & Technol, Rabat 10100, Morocco

[7] Univ Cent Florida, Dept Phys, Orlando, FL 32816 USA

[8] Imam Abdulrahman Bin Faisal Univ, IRMC, Dammam 32210, Saudi Arabia

[9] CY Cergy Paris Univ, Dept Phys, F-95031 Cergy Pontoise, France

来源：

ADVANCED FUNCTIONAL MATERIALS | 2023年 / 33卷 / 21期

关键词：

2D materials; Dirac fermions; high resolution photoelectron spectroscopy; phosphorenes; scanning tunneling microscopy; EPITAXIAL-GROWTH; BLACK; LAYER; CONFINEMENT; SILICENE; FLAT;

D O I：

10.1002/adfm.202213664

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页数：7

共 50 条

[1] Optimized atomic-like orbitals for first-principles tight-binding molecular dynamics [J].