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Rules For Superconductivity Mirrored In ‘Excitonic Insulator’（图）
Superconductivity Mirrored Excitonic Insulator
2017/12/19
Rice University physicists dedicated to creating the working components of a fault-tolerant quantum computer have succeeded in creating a previously unseen state of matter.The “topological excitonic i...
The growing field of spin electronics – spintronics – tells us that electrons spin like a top, carry angular momentum, and can be controlled as units of power, free of conventional electric current. N...
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 ...
Topological Insulator Magnetic Tunnel Junctions: Quantum Hall Effect and Fractional Charge via Folding
Topological Insulator Magnetic Tunnel Junctions Quantum Hall Effect Fractional Charge Folding
2012/2/27
We provide a characterization of tunneling between coupled topological insulators in 2D and 3D under the influence of a ferromagnetic layer. We explore conditions for such systems to exhibit integer q...
Spin connection and boundary states in a topological insulator
Spin connection boundary states topological insulator
2010/12/24
We study the surface resistivity of a three-dimensional topological insulator when the boundaries exhibit a non trivial curvature. We obtain an analytical solution for a spherical topological insulato...
P-Wave Holographic Insulator/Superconductor Phase Transition
P-Wave Holographic Insulator/Superconductor Phase Transition
2010/12/24
Using a five dimensional AdS soliton in an Einstein-Yang-Mills theory with SU(2) gauge group we study p-wave holographic insulator/superconductor phase transition. To explore the phase structure of th...
The strong correlation effects on topological insulator are studied in a two-sublattice system with an onsite single-particle energy difference between two sublattices. At = 0, increasing the onsi...
Large bulk resistivity and surface quantum oscillations in the topological insulator Bi2Te2Se
Large bulk resistivity surface quantum oscillations
2010/11/22
Topological insulators are predicted to present novel surface transport phenomena, but their
experimental studies have been hindered by a metallic bulk conduction that overwhelms the surface transpor...
New Hydrocarbon Superconductor on the Verge of Metal-Insulator Transition: Electronic Structures and Magnetic Properties of K3picene
New Hydrocarbon Superconductor Verge of Metal-Insulator Transition: Electronic Structures Magnetic Properties of K3picene
2010/11/22
We have investigated the electronic structures and magnetic properties of of K3picene, which
is a first hydrocarbon superconductor with high transition temperature Tc=18K. We have shown
that the met...
Orbital Order, Metal Insulator Transition, and Magnetoresistance-Effect in the two-orbital Hubbard model
Orbital Order Metal Insulator Transition Magnetoresistance-Effect
2010/11/19
We study the effects of temperature and magnetic field on a two-orbital Hubbard model within
dynamical mean field theory. We focus on the quarter filled system, which is a special point in the phase ...