Singular Vortex in Narrow Cylinders of Superfluid 3He-A Phase

Singular Vortex in Narrow Cylinders of Superfluid 3He-A Phase
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超流 3He-A 相窄圆柱体内的奇异涡旋

DOI:
10.1143/jpsj.78.114606
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发表时间:
2009
影响因子:
1.7
通讯作者:
K. Machida
K. Machida
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Y. Tsutsumi;K. Machida

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受东京大学ISSP正在进行的旋转低温恒温器实验的启发,我们研究了半径为R =50µm和115µm的超流体3 He-A相的结构和涡。计算基于Ginzburg-Landau (GL)框架,该框架充分考虑了手性p波对超流体的轨道(l -矢量)和自旋(d -矢量)自由度。在P =3.2 MPa和H =21.6 mT条件下,利用最适合实际实验情况的已知GL参数,对GL自由能函数进行了数值求解。我们确定了基态l向量构型为极核处于静止和低旋转状态的径向消散(RD)织构,以及在高磁场下两种窄圆柱体体系的相关d向量织构。在临界转速以上,具有中心奇点的纹理转变为Mermin-Ho纹理。这是精确确定的。结果与实验结果进行了比较。
Motivated by the on-going rotating cryostat experiments in ISSP, University of Tokyo, we explore the textures and vortices in superfluid 3 He-A phase confined in narrow cylinders, whose radii are R =50 µm and 115 µm. The calculations are based on the Ginzburg–Landau (GL) framework, which fully takes into account the orbital ( l -vector) and spin ( d -vector) degrees of freedom for chiral p -wave pairing superfluid. The GL free energy functional is solved numerically by using best known GL parameters appropriate for the actual experimental situations at P =3.2 MPa and H =21.6 mT. We identify the ground state l -vector configuration as radial disgyration (RD) texture with the polar core both at rest and low rotations and associated d -vector textures for both narrow cylinder systems under high magnetic fields. The RD which has a singularity at center changes into Mermin–Ho texture above the critical rotation speed. This is determined precisely. The consequences are compared with experimental results.
限制在旋转窄圆柱体中的超流体 ^3He-A 相的结构和核磁共振谱
DOI: --
发表时间: 2005
期刊: J.Phys.Chem.Solids (in press)
影响因子: --
作者:
Kamide;Y. 他;H.Beidenkopf;勝又紘一;T.Takagi
通讯作者: T.Takagi
铁磁旋量碱-爱因斯坦凝聚态中的 Mermin-Ho 涡旋
DOI: --
发表时间: 2002
期刊: Phys.Rev.Let 89
影响因子: --
作者:
T.Mizushima;K.Machida;T.Kita
通讯作者: T.Kita
快速旋转超流体中的非常规涡流和相变^3He
DOI: --
发表时间: 2002
期刊: Physical Review B 66
影响因子: --
作者:
T.Kita;T.Mizushima;K.Machida;T.Kita
通讯作者: T.Kita