Dispersionless wave packets in Dirac materials
Abstract
We show that a wide class of quantum systems with translational invariance can host dispersionless, soliton-like, wave packets. We focus on the setting where the effective, two-dimensional Hamiltonian acquires the form of the Dirac operator. The proposed framework for construction of the dispersionless wave packets is illustrated on silicene-like systems with topologically nontrivial effective mass. Our analytical predictions are accompanied by a numerical analysis and possible experimental realizations are discussed.
- Publication:
-
Annals of Physics
- Pub Date:
- March 2017
- DOI:
- 10.1016/j.aop.2017.01.016
- arXiv:
- arXiv:1604.00157
- Bibcode:
- 2017AnPhy.378..171J
- Keywords:
-
- Quantum systems;
- Wave packets;
- Dispersion;
- Dirac materials;
- Condensed Matter - Mesoscale and Nanoscale Physics;
- High Energy Physics - Theory;
- Mathematical Physics;
- Quantum Physics
- E-Print:
- 15 pages, accepted in the Annals of Physics