纳米尺度约束下仲氢的增强超流响应
Enhanced superfluid response of parahydrogen in nanoscale confinement
摘要：
禁闭一般具有压制凝聚态有序的作用。事实上，相变，如冻结，或超流体的转变，在液氦，发生在较低的温度下，在限制比他们做的散装。我们在这里提供一个物理环境的例子，在这个物理环境中，相反的情况发生了。具体而言，增强的超流响应的仲氢局限于纳米尺寸的空腔证明通过第一原理计算机模拟。展望稳定和观察长期寻求，但尚未难以捉摸的大块超流相仲氢在有目的地设计的多孔介质进行了讨论。
英文摘要：
Confinement has generally the effect of suppressing order in condensed matter. Indeed, phase transitions such as freezing, or the superfluid transition in liquid helium, occur at lower temperatures in confinement than they do in the bulk. We provide here an illustration of a physical setting in which the opposite takes place. Specifically, the enhancement of the superfluid response of parahydrogen confined to nanoscale size cavities is demonstrated by means of first principle computer simulations. Prospects to stabilize and observe the long sought but yet elusive bulk superfluid phase of parahydrogen in purposefully designed porous media are discussed.
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