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Bello, M. and Creffield, Charles E. and Platero, G. (2017) Sublattice dynamics and quantum state transfer of doublons in two-dimensional lattices. Physical review B, 95 (9). ISSN 2469-9950
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Official URL: http://dx.doi.org/10.1103/PhysRevB.95.094303
Abstract
We analyze the dynamics of two strongly interacting fermions moving in two-dimensional lattices under the action of a periodic electric field, both with and without a magnetic flux. Due to the interaction, these particles bind together forming a doublon. We derive an effective Hamiltonian that allows us to understand the interplay between the interaction and the driving, revealing surprising effects that constrain the movement of the doublons. We show that it is possible to confine doublons to just the edges of the lattice and to a particular sublattice if different sites in the unit cell have different coordination numbers. Contrary to what happens in one-dimensional systems, here we observe the coexistence of both topological and Shockley-like edge states when the system is in a nontrivial phase.
Item Type: | Article |
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Additional Information: | ©2017 American Physical Society. |
Uncontrolled Keywords: | Optical Lattices; Transport; Networks; Walks; Model |
Subjects: | Sciences > Physics > Materials Sciences > Physics > Solid state physics |
ID Code: | 42565 |
Deposited On: | 18 May 2017 18:34 |
Last Modified: | 19 May 2017 08:23 |
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