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Supertransport by Superclimbing Dislocations inHe4: When All Dimensions Matter
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-06-21 , DOI: 10.1103/physrevlett.128.255301 Anatoly B Kuklov 1 , Lode Pollet 2, 3, 4 , Nikolay V Prokof'ev 5 , Boris V Svistunov 4, 5
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-06-21 , DOI: 10.1103/physrevlett.128.255301 Anatoly B Kuklov 1 , Lode Pollet 2, 3, 4 , Nikolay V Prokof'ev 5 , Boris V Svistunov 4, 5
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The unique superflow-through-solid effect observed in solid 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.
中文翻译：
He4 中超爬位错的超传输：当所有维度都很重要时
在固体中观察到的独特的超流通固体效应并且归因于沿着位错核心的准一维超流体表现出两个非凡的特征：（i）通过适度增加压力对流动的指数强烈抑制和（ii）流量的不寻常的温度依赖性，没有类比任何已知的系统，并与标准 Luttinger 液体范式相矛盾。基于从头算和模型模拟，我们认为这两个特征密切相关： 超爬刃位错形状的热波动会导致作用在超流体核心上的大的、相关的和不对称的应力场。临界通量对强烈的罕见波动最敏感，因此在实验中观察到了强烈的温度依赖性。
更新日期：2022-06-21
中文翻译：
He4 中超爬位错的超传输：当所有维度都很重要时
在固体中观察到的独特的超流通固体效应并且归因于沿着位错核心的准一维超流体表现出两个非凡的特征：（i）通过适度增加压力对流动的指数强烈抑制和（ii）流量的不寻常的温度依赖性，没有类比任何已知的系统，并与标准 Luttinger 液体范式相矛盾。基于从头算和模型模拟，我们认为这两个特征密切相关： 超爬刃位错形状的热波动会导致作用在超流体核心上的大的、相关的和不对称的应力场。临界通量对强烈的罕见波动最敏感，因此在实验中观察到了强烈的温度依赖性。
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