Pseudospin and nonlinear conical diffraction in Lieb lattices | Zendy

Daniel Leykam | Zendy; Omri Bahat-Treidel | Zendy; Anton S. Desyatnikov | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Pseudospin and nonlinear conical diffraction in Lieb lattices

Author(s) -

Daniel Leykam,

Omri Bahat-Treidel,

Anton S. Desyatnikov

Publication year - 2012

Publication title -

physical review a

Language(s) - English

Resource type - Journals

eISSN - 1094-1622

pISSN - 1050-2947

DOI - 10.1103/physreva.86.031805

Subject(s) - physics , conical surface , diffraction , nonlinear system , wave packet , dirac equation , lattice (music) , quantum mechanics , operator (biology) , condensed matter physics , mathematical physics , classical mechanics , geometry , mathematics , biochemistry , chemistry , repressor , acoustics , transcription factor , gene

We study linear and nonlinear wave dynamics in the Lieb lattice, in the vicinity of an intersection point between two conical bands and a flat band. We define a pseudospin operator and derive a nonlinear equation for spin-1 waves, analogous to the spin-1/2 nonlinear Dirac equation. We then study the dynamics of wave packets that are associated with different pseudospin states, and find that they are distinguished by their linear and nonlinear conical diffraction patterns.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research