Crystalline order in superfluid (3)He films.
Crystalline order in superfluid (3)He films.
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超流体中的晶序 (3)He 薄膜。
DOI：
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发表时间：
2006
影响因子：
8.6
通讯作者：
J. Sauls
中科院分区：
文献类型：
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作者：
A. Vorontsov;J. Sauls
我们预测了超流体(3)He薄膜的非均匀相，其中平移对称性在薄膜平面上自发地被打破。在一定的膜厚范围内，D(c2)(T) < D < D(c1)(T)，该相在能量上更有利，分离出明显的均质超流体相。临界膜厚处的不稳定性D（c2）约为9 xi (T)，是单模不稳定性，在膜中产生条纹相序。序参量和自由能的数值计算表明，在D（c1）约13 xi (T)处由畴壁隔开的简并类b相的周期晶格具有二阶不稳定性。
We predict an inhomogeneous phase of superfluid (3)He films in which translational symmetry is spontaneously broken in the plane of the film. This phase is energetically favored over a range of film thicknesses, D(c2)(T) < D < D(c1)(T), separating distinct homogeneous superfluid phases. The instability at the critical film thickness, D(c2) approximately 9 xi (T), is a single-mode instability generating striped phase order in the film. Numerical calculations of the order parameter and free energy indicate a second-order instability to a periodic lattice of degenerate B-like phases separated by domain walls at D(c1) approximately 13 xi (T).