Fast Josephson vortex ratchet made of intrinsic Josephson junctions in Bi2Sr2CaCu2O8
文献类型：期刊论文
| 作者 | Wang, HB ; Zhu, BY ; Gurlich, C ; Ruoff, M ; Kim, S ; Hatano, T ; Zhao, BR ; Zhao, ZX ; Goldobin, E ; Koelle, D ; Kleiner, R |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2009 |
| 卷号 | 80期号:22 |
| 关键词 | MAGNETIC-FLUX QUANTA BROWNIAN MOTORS SINGLE-CRYSTALS SUPERCONDUCTORS TRANSPORT MOTION |
| ISSN号 | 1098-0121 |
| 通讯作者 | Wang, HB: Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan. |
| 中文摘要 | The mixture of the scalar bosonic and the spinless or polarized fermionic cold atoms in the one-dimensional optical lattice is studied. The system is modeled by the Bose-Fermi-Hubbard Hamiltonian, which shows different behavior from that of the Bose-Hubbard or the Fermi-Hubbard models. Because the SU(1 vertical bar 1)-supersymmetric Bethe ansatz solution gives an excellent approximation to this kind of mixed cold atomic systems, the ground-state properties of the system such as the densities of state in the momentum space are obtained based on the Bethe ansatz. If the number of bosons is equal to that of fermions and the filling factor is 1, it is found that there exists a critical on-site interaction U-c. If U < U-c, the ground state of the system is in the superfluid phase, while if U>U-c, the ground state is in the insulating phase. The superfluid-insulator transition occurs at U-c. From the analysis of the superfluid density, the value of the critical point is determined as U-c=2.79256, which is larger than the U-c=0 for the Fermi-Hubbard model and smaller than the U-c=3.28 for the Bose-Hubbard model. The elementary excitations and effective Hamiltonian in the strong-coupling limit are also discussed. |
| 收录类别 | SCI |
| 资助信息 | JST; DFG; MOST 973; National Natural Science Foundation of China |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/38012]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Wang, HB,Zhu, BY,Gurlich, C,et al. Fast Josephson vortex ratchet made of intrinsic Josephson junctions in Bi2Sr2CaCu2O8[J]. PHYSICAL REVIEW B,2009,80(22). |
| APA | Wang, HB.,Zhu, BY.,Gurlich, C.,Ruoff, M.,Kim, S.,...&Kleiner, R.(2009).Fast Josephson vortex ratchet made of intrinsic Josephson junctions in Bi2Sr2CaCu2O8.PHYSICAL REVIEW B,80(22). |
| MLA | Wang, HB,et al."Fast Josephson vortex ratchet made of intrinsic Josephson junctions in Bi2Sr2CaCu2O8".PHYSICAL REVIEW B 80.22(2009). |
入库方式： OAI收割
来源：物理研究所
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