Selective population of edge states in a 2D topological band system
File(s)S1KM_09.pdf (740.66 KB)
Accepted version
Author(s)
Barnett, RL
Lee, DKK
Galilo, B
Type
Journal Article
Abstract
We consider a system of interacting spin-one atoms in a hexagonal lattice under the presence of a synthetic gauge field. Quenching the quadratic Zeeman field is shown to lead to a dynamical instability of the edge modes. This, in turn, leads to a spin current along the boundary of the system which grows exponentially fast in time following the quench. Tuning the magnitude of the quench can be used to selectively populate edge modes of different momenta. Implications of the intrinsic symmetries of the Hamiltonian on the dynamics are discussed. The results hold for atoms with both antiferromagnetic and ferromagnetic interactions.
Date Issued
2015-12-11
Online Publication Date
2015-12-11
Date Acceptance
2015-11-17
ISSN
1079-7114
Publisher
American Physical Society
Journal / Book Title
Physical Review Letters
Volume
115
Copyright Statement
© 2015 The American Physical Society
Source Database
manual-entry
Sponsor
Commission of the European Communities
Grant Number
PCIG14-GA-2013-631002
Subjects
Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
INSULATORS
SUPERCONDUCTORS
CONDENSATION
REALIZATION
GASES
MODEL
cond-mat.quant-gas
cond-mat.quant-gas
01 Mathematical Sciences
02 Physical Sciences
09 Engineering
General Physics
Publication Status
Published
Article Number
245302
Date Publish Online
2015-12-11