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 |
|---|---|
| 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 |
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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)
Cite this
First-order phase transition and anomalous hysteresis of binary bose mixtures in an optical lattice. / Yamamoto, Daisuke; Ozaki, Takeshi; Sá De Melo, Carlos A R; Danshita, Ippei.
In: Journal of Low Temperature Physics, Vol. 175, No. 1-2, 2014, p. 258-264.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - First-order phase transition and anomalous hysteresis of binary bose mixtures in an optical lattice
AU - Yamamoto, Daisuke
AU - Ozaki, Takeshi
AU - Sá De Melo, Carlos A R
AU - Danshita, Ippei
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
KW - Anomalous hysteresis
KW - Bose-Hubbard model
KW - First-order phase transition
UR - http://www.scopus.com/inward/record.url?scp=84896392814&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84896392814&partnerID=8YFLogxK
U2 - 10.1007/s10909-013-0989-0
DO - 10.1007/s10909-013-0989-0
M3 - Article
AN - SCOPUS:84896392814
VL - 175
SP - 258
EP - 264
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
SN - 0022-2291
IS - 1-2
ER -