Abstract
We study a first-order phase transition between superfluid and Mott insulator phases in binary Bose mixtures loaded into a hypercubic optical lattice. The system is described by a two-component Bose-Hubbard model. Considering the difference between the two kinds of bosons in the intra-component interaction strength, we discuss the metastability of the system and the hysteresis associated with the first-order superfluid-Mott insulator transition. It is found that the sweeping of hopping amplitude induces a conventional hysteresis-loop behavior. We also find an anomalous hysteresis behavior when the chemical potential is varied. In the anomalous hysteresis, the phase transition occurs in a unidirectional way and a hysteresis loop does not form.
Original language | English |
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Pages (from-to) | 258-264 |
Number of pages | 7 |
Journal | Journal of Low Temperature Physics |
Volume | 175 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2014 |
Externally published | Yes |
Keywords
- Anomalous hysteresis
- Bose-Hubbard model
- First-order phase transition
ASJC Scopus subject areas
- Condensed Matter Physics
- Atomic and Molecular Physics, and Optics
- Materials Science(all)