论文标题
超级启动位错中的超级转移$^4 $ HE：当所有维度很重要时
Supertransport by Superclimbing Dislocations in $^4$He: When All Dimensions Matter
论文作者
论文摘要
在固体氦4中观察到的独特的超级流动 - 固定效应，并归因于沿脱位核的准中二维超流体效应表现出了两个非凡特征：（i）在压力中适度地升高，（ii）与任何相似的系统相关的流动速率不寻常的流量，并且与任何类比的流动速率相反。基于从头算和模型模拟，我们认为这两个特征是密切相关的：超聚边缘位错的形状的热波动会诱导作用于超流体核心的大型，相关和不对称的应力场。临界通量对强烈的罕见波动最敏感，从而获得实验中观察到的急剧温度依赖性。
The unique superflow-through-solid effect observed in solid Helium-4 and attributed to the quasi-one-dimensional superfluidity along the dislocation cores exhibits two extraordinary features: (i) an exponentially strong suppression of the flow by a moderate increase in pressure, and (ii) an unusual temperature dependence of the flow rate with no analogy to any known system and in contradiction with the standard Luttinger liquid paradigm. Based on ab initio and model simulations, we argue that the two features are closely related: Thermal fluctuations of the shape of a superclimbing edge dislocation induce large, correlated, and asymmetric stress fields acting on the superfluid core. The critical flux is most sensitive to strong rare fluctuations and hereby acquires a sharp temperature dependence observed in experiments.
