Title :

Semi-Dirac Transport and Anisotropic Localization in Polariton Honeycomb Lattices

Author(s) :

Real, B. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Jamadi, O. [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Milićević, M. [Auteur]
Centre de Nanosciences et de Nanotechnologies [C2N]
Pernet, N. [Auteur]
Centre de Nanosciences et de Nanotechnologies [C2N]
St-Jean, P. [Auteur]
Centre de Nanosciences et de Nanotechnologies [C2N]
Ozawa, T. [Auteur]
Montambaux, G. [Auteur]
Laboratoire de Physique des Solides [LPS]
Sagnes, I. [Auteur]
Centre de Nanosciences et de Nanotechnologies [C2N]
Lemaître, A. [Auteur]
Centre de Nanosciences et de Nanotechnologies [C2N]
Gratiet, L. Le [Auteur]
Centre de Nanosciences et de Nanotechnologies [C2N]
Harouri, A. [Auteur]
Centre de Nanosciences et de Nanotechnologies [C2N]
Ravets, S. [Auteur]
Centre de Nanosciences et de Nanotechnologies [C2N]
Bloch, J. [Auteur]
Centre de Nanosciences et de Nanotechnologies [C2N]
Amo, A. [Auteur]
Centre de Nanosciences et de Nanotechnologies [C2N]
Le Gratiet, L. [Auteur]
Centre de Nanosciences et de Nanotechnologies [C2N]

Journal title :

Physical Review Letters

Publisher :

American Physical Society

Publication date :

2020-10

ISSN :

0031-9007

HAL domain(s) :

Physique [physics]
Physique [physics]/Matière Condensée [cond-mat]/Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]

English abstract : [en]

Compression dramatically changes the transport and localization properties of graphene. This is intimately related to the change of symmetry of the Dirac cone when the particle hopping is different along different directions ...
Show more >Compression dramatically changes the transport and localization properties of graphene. This is intimately related to the change of symmetry of the Dirac cone when the particle hopping is different along different directions of the lattice. In particular, for a critical compression, a semi-Dirac cone is formed with massless and massive dispersions along perpendicular directions. Here we show direct evidence of the highly anisotropic transport of polaritons in a honeycomb lattice of coupled micropillars implementing a semi-Dirac cone. If we optically induce a vacancy-like defect in the lattice, we observe an anisotropically localized polariton distribution in a single sublattice, a consequence of the semi-Dirac dispersion. Our work opens up new horizons for the study of transport and localization in lattices with chiral symmetry and exotic Dirac dispersions.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Comment :

6 pages, 3 figures

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL