高温超伝導体のGL理論と磁束量子の構造

抄録

The phenomenological Ginzburg-Landau theory is developed for the high-T_c superconductors assuming the spin and charge degrees of freedom are separated. The superconductivity is realized when both the fermion pairing and the bose condensation occurs. We propose the free energy functional including these two order parameters, which are coupled with the gauge field. The global phase diagram as well as the vortex structure is discussed.