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). © 2010 Europhysics Letters Association.

Frustrated quantum antiferromagnetism with ultracold bosons in a triangular lattice / Eckardt, A.; Hauke, P.; Soltan-Panahi, P.; Becker, C.; Sengstock, K.; Lewenstein, M.. - In: EUROPHYSICS LETTERS. - ISSN 0295-5075. - ELETTRONICO. - 89:1(2010), pp. 10010.1-10010.6. [10.1209/0295-5075/89/10010]

Frustrated quantum antiferromagnetism with ultracold bosons in a triangular lattice

Hauke P.;
2010-01-01

Abstract

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). © 2010 Europhysics Letters Association.
2010
1
Eckardt, A.; Hauke, P.; Soltan-Panahi, P.; Becker, C.; Sengstock, K.; Lewenstein, M.
Frustrated quantum antiferromagnetism with ultracold bosons in a triangular lattice / Eckardt, A.; Hauke, P.; Soltan-Panahi, P.; Becker, C.; Sengstock, K.; Lewenstein, M.. - In: EUROPHYSICS LETTERS. - ISSN 0295-5075. - ELETTRONICO. - 89:1(2010), pp. 10010.1-10010.6. [10.1209/0295-5075/89/10010]
File in questo prodotto:
File Dimensione Formato  
Eckardt_2010_EPL_89_10010.pdf

Solo gestori archivio

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 399.37 kB
Formato Adobe PDF
399.37 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/252190
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 126
  • ???jsp.display-item.citation.isi??? 131
social impact