@misc{oai:tsukuba.repo.nii.ac.jp:00016925,
 author = {初貝, 安弘 and HATSUGAI, Yasuhiro and Ryu, Shinsei},
 month = {May},
 note = {Concept of the topological order is useful to characterize anisotropic superconductivities. The spin Hall conductance distinguishes superconductivities with the same symmetry. The Chern number for the spin Hall conductance is given by the covering degree of a closed surface around the Dirac monopole. It gives a clear illustration for the on-critical condition for the dx2−y2 superconductivitiy with non-zero chemical potential. Non-trivial topological orders on the triangular lattice are also presented and demonstrated by the topological objects.},
 title = {Dirac monopole and spin Hall conductance for anisotropic superconductivities},
 year = {2003},
 yomi = {ハツガイ, ヤスヒロ}
}