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Magnetic properties of commensurate Bose-Bose mixtures in one-dimensional optical lattices

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Abstract

We investigate magnetic properties of strongly interacting bosonic mixtures confined in one dimensional geometries, focusing on recently realized 87Rb-41K gases with tunable interspecies interactions. By combining analytical perturbation theory results with density-matrix-renormalization group calculations, we provide quantitative estimates of the ground state phase diagram as a function of the relevant microscopic quantities, identifying the more favorable experimental regimes in order to access the various magnetic phases. Finally, we qualitatively discuss the observability of such phases in realistic setups when finite temperature effects have to be considered.

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Authors and Affiliations

  1. Dipartimento di Fisica dell’Università di Bologna and INFN, via Irnerio 46, 40126, Bologna, Italy

    M. Dalmonte, E. Ercolessi, M. Mattioli, F. Ortolani & D. Vodola

  2. Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020, Innsbruck, Austria

    M. Dalmonte

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  1. M. Dalmonte
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  2. E. Ercolessi
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  3. M. Mattioli
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  4. F. Ortolani
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  5. D. Vodola
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Dalmonte, M., Ercolessi, E., Mattioli, M. et al. Magnetic properties of commensurate Bose-Bose mixtures in one-dimensional optical lattices. Eur. Phys. J. Spec. Top. 217, 13–27 (2013). https://doi.org/10.1140/epjst/e2013-01750-2

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  • DOI: https://doi.org/10.1140/epjst/e2013-01750-2

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