摘要 : Textures, textural transformation, and formation and annihilation of a single vortex were investigated in narrow cylinders with 100 μm radius in A-phase under rotation up to 6.28 rad/sec. Three textures were found, depending on th... 展开 Textures, textural transformation, and formation and annihilation of a single vortex were investigated in narrow cylinders with 100 μm radius in A-phase under rotation up to 6.28 rad/sec. Three textures were found, depending on the cooling conditions of the sample through the superfluid transition temperature T_c. We found the gyromagnetic effect of textures; that is, two textures (A or B) could be selected either by applying a magnetic field in parallel or anti-parallel to the rotation axis. The critical angular speed of a single vortex formation Ω_f and that of annihilation Ω_a for each texture were measured. The textural transformation in type A texture was induced by rotation. Both type A and B textures held macroscopic angular momentum along the rotation axis. We identified the texture for type A, B, and C as Mermin-Ho, radial disgyration, and a soliton type of defect along the axis, respectively. 收起