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Revealing the superfluid–Mott-insulator transition in an optical lattice
Numerical solution of single particle the density matrix ultracold atomic optical lattice parabola mott insulator
2014/12/22
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...
Superfluid-Insulator Transition in Commensurate Disordered Bosonic Systems: Large-Scale Worm Algorithm Simulations
Monte carlo simulation insulator dynamics
2014/12/20
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...
Superfluid-Insulator Transition in a Commensurate One-Dimensional Bosonic System with Off-Diagonal Disorder
Quantum phase transition d lattice boson system monte carlo simulation of the superfluid
2014/12/20
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 ...
Effects of finite temperature on the Mott-insulator state
Temperature ultracold bose atoms optical lattice atom
2014/12/20
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...
Superfluid-insulator and roughening transitions in domain walls
Quantum monte carlo simulation superfluid two-dimensional core
2014/12/20
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...
Absence of a Direct Superfluid to Mott Insulator Transition in Disordered Bose Systems
Quantum phase transition superfluid mott insulator bosonic system inclusions
2014/12/19
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 ...
Wave function multifractality and dephasing at metal-insulator and quantum Hall transitions
Anderson transitions Quantum Hall effect dephasing multifractality
2010/11/23
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...
Theory of quantum transport in Josephson junctions with a ferromagnetic insulator
Theory of quantum Josephson junctions ferromagnetic insulator
2010/10/27
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...
Observation of Magnetization dynamics and Interaction-induced Phases on Topological Insulator Surfaces
Magnetization dynamics Interaction-induced Phases Topological Insulator Surfaces
2010/10/27
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...
Superfluid-Mott-Insulator Phase Transition of Bosons
in an Optical Lattice
superfluid Mott insulator cold atom optical lattice
2007/8/15
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...
Influence of Doping on the Mott Metal-Insulator Transition
in Infinite Dimensions
Hubbard model metal-insulator transition doping Fermi liquid
2007/8/15
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...