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We study (by an exact numerical scheme) the single-particle density matrix of ~103 ultracold atoms in an optical lattice with a parabolic confining potential. Our simulation is directly relevant to th...
We report results of large-scale Monte Carlo simulations of superfluid-insulator transitions in disordered commensurate 2D bosonic systems. In the off-diagonal disorder case, we find that the transiti...
We study the nature of the superfluid-insulator quantum phase transition in a one-dimensional system of lattice bosons with off-diagonal disorder in the limit of a large integer filling factor. Monte ...
We investigate the effects of finite temperature on ultracold Bose atoms confined in an optical lattice plus a parabolic potential in the Mott-insulator state. In particular, we analyze the temperatur...
We have performed quantum Monte Carlo simulations to investigate the superfluid behavior of one- and two-dimensional interfaces separating checkerboard solid domains. The system is described by the ha...
We prove the absence of a direct quantum phase transition between a superfluid and a Mott insulator in a bosonic system with generic, bounded disorder. We also prove the compressibility of the system ...
We analyze the critical behavior of the dephasing rate induced by short-range electron-electron interaction near an Anderson transition of metal-insulator or quantum Hall type. The corresponding expon...
We investigate the Josephson transport through ferromagnetic insulators (FIs) by taking into account the band structure of FIs explicitly. Using the recursive Green’s function method, we found the fo...
Three dimensional topological insulators embody a newly discovered state of matter characterized by conducting spin-momentum locked surface states that span the bulk band gap [1–7]. This highly unusua...
2007Vol.47No.5pp.897-900DOI: Superfluid-Mott-Insulator Phase Transition of Bosons in an Optical Lattice ZHU Rui Department of Physics, Tsinghua University, Beijing 10008...
2002Vol.37No.5pp.615-618DOI: Influence of Doping on the Mott Metal-Insulator Transition in Infinite Dimensions TONG Ning-Hua State Key Laboratory of Magnetism, Institute...
期刊信息 篇名 Tunneling time of spin-polarized electrons in ferromagnetic insulator (semiconductor) double junctions under an applied electric field 语种 英文 撰写或编译 撰写 作者 Bin Wang,Yong Guo,Bing-Lin Gu 第一作者单位 清华...

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