3He-A中单量子涡旋的结构

IF 1.4 3区物理与天体物理 Q4 PHYSICS, APPLIED

Journal of Low Temperature Physics Pub Date : 2025-03-18 DOI:10.1007/s10909-025-03279-2

Riku Rantanen, Erkki Thuneberg, Vladimir Eltsov

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引用次数: 0

摘要

我们对超流体\(^3\) He-A中的单量子涡旋结构进行了数值计算。在Ginzburg-Landau模型下进行了gpu加速的大规模数值模拟，并对涡旋的相干长度大小的硬核和偶极长度大小的软核的长度尺度进行了解析。计算结果支持了先前提出的涡旋的定性结构，最近被命名为偏心分数涡，并提供了涡旋能量、硬核和软核的大小和位置以及涡旋高度不对称流动剖面的数值。

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Structure of a Single-Quantum Vortex in 3He-A

We have performed numerical calculations of the structure of the single-quantum vortex in superfluid \(^3\)He-A. The GPU-accelerated large-scale numerical simulation is performed in the Ginzburg-Landau model and resolves length scales of both coherence-length-sized hard core and dipolar-length-sized soft core of the vortex. The calculations support previously suggested qualitative structure of the vortex, recently named as eccentric fractional skyrmion, and provide numerical values for the vortex energy, sizes and locations of the hard and soft cores and highly-asymmetric flow profile of the vortex.

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来源期刊

Journal of Low Temperature Physics 物理-物理：凝聚态物理

CiteScore

3.30

自引率

25.00%

发文量

245

审稿时长

1 months

期刊介绍： The Journal of Low Temperature Physics publishes original papers and review articles on all areas of low temperature physics and cryogenics, including theoretical and experimental contributions. Subject areas include: Quantum solids, liquids and gases; Superfluidity; Superconductivity; Condensed matter physics; Experimental techniques; The Journal encourages the submission of Rapid Communications and Special Issues.