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

Based on an effective Hamiltonian specified in the triangular lattice with possible $p_x\pm ip_y$- or $d_{x^2-y^2}\pm id_{xy}$-wave pairing, which has close relevance to the newly discovered Na$_{0.35}$CoO$_2$$\cdot y$H$_2$O, the electronic structure of the vortex state is studied by solving the Bogoliubov-de Gennes equations. It is found that $p_x\pm ip_y$-wave is favored for the electron doping as the hopping integral $t<0$. The lowest-lying vortex bound states are found to have respectively zero and positive energies for $p_x\pm ip_y$- and $d_{x^2-y^2}\pm id_{xy}$-wave superconductors, whose vortex structures exhibit the intriguing six-fold symmetry. In the presence of strong on-site repulsion, the antiferromagnetic and ferromagnetic orders are induced around the vortex cores for the former and the latter, respectively, both of which cause the splitting of the LDOS peaks due to the lifting of spin degeneracy. STM and NMR measurements are able to probe the new features of vortex states uncovered in this work.Comment: 4 pages, 4 figures, The slightly shorter version was submitted to PR

IMAS: An Integrated Manufacturing Application Server for BPR

AbstractInformation management systems should be reconfigured rapidly to respond to the change of requirements in Business Process Re-engineering domain. Inspired by the trend mentioned above, we proposed the notion of IMAS (An Integrated Manufacturing Application Server for BPR) and researched the connotation of it. Firstly, as the instruction system definition of IMAS, a special BPR language DTBP (Data Translate of Business Process) was described in detail. Secondly, we gave the hierarchical architecture of IMAS which consists of communication layer, platform layer and application layer, and all of the three layers were illustrated in detail. In the end, we make conclusion of this paper and point the future works