| Issue |
EPL
Volume 89, Number 1, January 2010
|
|
|---|---|---|
| Article Number | 10010 | |
| Number of page(s) | 6 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/89/10010 | |
| Published online | 21 January 2010 | |
Frustrated quantum antiferromagnetism with ultracold bosons in a triangular lattice
1
ICFO-Institut de Ciències Fotòniques - Av. Canal Olímpic s/n, E-08860 Castelldefels (Barcelona), Spain, EU
2
Universität Hamburg - Luruper Chaussee 149, D-22761 Hamburg, Germany, EU
3
ICREA-Institucio Catalana de Recerca i Estudis Avançats - Lluis Companys 23, E-08010 Barcelona, Spain, EU
Corresponding author: andre.eckardt@icfo.es
Received:
24
September
2009
Accepted:
13
December
2009
We propose to realize the anisotropic triangular-lattice Bose-Hubbard model with positive tunneling matrix elements by using ultracold atoms in an optical lattice dressed by a fast lattice oscillation. This model exhibits frustrated antiferromagnetism at experimentally feasible temperatures; it interpolates between a classical rotor model for weak interaction, and a quantum spin-(1/2) XY-model in the limit of hard-core bosons. This allows to explore experimentally gapped spin-liquid phases predicted recently (Schmied R.et al., New J. Phys., 10 (2008) 045017).
PACS: 03.75.Lm – Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations / 75.10.Jm – Quantized spin models / 75.50.Ee – Antiferromagnetics
© EPLA, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.