Fast Josephson vortex ratchet made of intrinsic Josephson junctions in Bi2Sr2CaCu2O8

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Fast Josephson vortex ratchet made of intrinsic Josephson junctions in Bi2Sr2CaCu2O8
	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
	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
内容类型	期刊论文
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).