Effects of a magnetic field on vortex states in superfluid He3?B
Effects of a magnetic field on vortex states in superfluid He3?B
复制标题
磁场对超流体 He3?B 中涡旋态的影响
DOI：
10.1103/physrevb.99.104513
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发表时间：
2019
影响因子：
3.7
通讯作者：
Nakahara Mikio
中科院分区：
文献类型：
--
作者：
Kasamatsu Kenichi;Mizuno Ryota;Ohmi Tetsuo;Nakahara Mikio
超流体具有三种局部稳定的涡，即正常核涡、相核涡和双核涡。在这项工作中，我们研究了平行于或垂直于涡旋轴的磁场T）对这些结构的影响，通过求解两组不同的强耦合校正的二维Ginzburg-Landau方程。涡旋的能量对磁场有非平凡的依赖性.随着平行磁场的增加，即使在高压下，涡旋也是能量不稳定的，并且涡旋在所有可能的压力下都变得能量最稳定。在垂直磁场中，涡旋的能量低于高压区涡旋的能量。此外，在低压下，双芯涡旋倾向于平行于磁场方向，而垂直于磁场方向的双芯涡旋则随着压力的增加而不断变形为涡旋。
Superfluidpossesses three locally stable vortices known as a normal-core vortexvortex), an-phase-core vortexvortex), and a double-core vortexvortex). In this work, we study the effects of a magnetic fieldT) parallel or perpendicular to the vortex axis on these structures by solving the two-dimensional Ginzburg-Landau equation for two different sets of strong coupling correction. The energies of theandvortices have nontrivial dependence on the magnetic field. As the parallel magnetic field increases, thevortex is energetically unstable even at high pressures and thevortex becomes energetically most stable at all possible pressures. In perpendicular magnetic field, the energy of thevortex is lower than that of thevortex in the high pressure regime. In addition, the orientation of the double cores in thevortex prefers to be parallel to the magnetic field at low pressures, while thevortex with the double cores perpendicular to the magnetic field is allowed to continuously deform into thevortex with increasing pressure.