Pregled bibliografske jedinice broj: 474543
Breakdown of Dirac dynamics in honeycomb lattices due to nonlinear interactions
Breakdown of Dirac dynamics in honeycomb lattices due to nonlinear interactions // Physical Review A - Atomic, Molecular, and Optical Physics, 82 (2010), 013830-1 doi:10.1103/PhysRevA.82.013830 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 474543 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Breakdown of Dirac dynamics in honeycomb lattices due to nonlinear interactions
Autori
Bahat-Treidel, Omri ; Peleg, Or ; Buljan, Hrvoje ; Segev, Mordechai
Izvornik
Physical Review A - Atomic, Molecular, and Optical Physics (1050-2947) 82
(2010);
013830-1
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Dirac equation; honeycomb lattice; nonlinear interactions
Sažetak
We study the dynamics of coherent waves in nonlinear honeycomb lattices and show that nonlinearity breaks down the Dirac dynamics. As an example, we demonstrate that even a weak nonlinearity has major qualitative effects on one of the hallmarks of honeycomb lattices: conical diffraction. Under linear conditions, a circular input wave-packet associated with the Dirac point evolves into a ring, but even a weak nonlinearity alters the evolution such that the emerging beam possesses triangular symmetry, and populates Bloch modes outside of the Dirac cone region. Our results are presented in the context of optics, but we propose a scheme to observe equivalent phenomena in Bose-Einstein condensates.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
119-0000000-1015 - Nelinearne pojave i valna dinamika u fotoničkim sustavima (Buljan, Hrvoje, MZOS ) ( CroRIS)
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb
Profili:
Hrvoje Buljan
(autor)
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
