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9 papers · 1 filter
Scaling in directed dynamical small-world networks with random responses
Chen-Ping Zhu, Shi-Jie Xiong, Ying-Jie Tian +2
A dynamical model of small-world network, with directed links which describe various correlations in social and natural phenomena, is presented. Random responses of every site to t…
Local enhancement of spin and orbital antiferromagnetism around a single vortex in high-Tc superconductors
Jin An, Chang-De Gong
In a simple model we investigate three competing orders: d-wave superconductivity, spin and orbital antiferromagnetism (AF) in the vicinity of a single vortex in a cuprate supercon…
Quantum Ginzburg-Landau theory of doped Mott insulators
Qiang-Hua Wang
We improve a previous theory of doped Mott insulators with duality between pairing and magnetism by a further duality transform. As the result we obtained a quantum Ginzburg-Landau…
Theory of doped Mott insulators: duality between pairing and magnetism
Qiang-Hua Wang
By bosonizing the electronic t-J model exactly on any two-dimensional (2D) lattices, and integrating out the gauge fluctuations combined to slave particles beyond mean fields, we g…
Vortex State in Na_xCoO_2.yH_2O: p_x\pm ip_y-wave versus d_{x^2-y^2}\pm id_{xy}-wave Pairing
Qiang Han, Z. D. Wang, Q. -H. Wang +1
Based on an effective Hamiltonian specified in the triangular lattice with possible - or -wave pairing, which has close relevance to the newly…
Shot noise of spin current
Baigeng Wang, Jian Wang, Hong Guo
We report an exact solution for the noise spectrum of spin-current without charge-current in a spin field effect transistor (SFET). For the SFET with two leads, it is found that bo…