Del Maestro Adrian, Nichols Nathan S, Prisk Timothy R, Warren Garfield, Sokol Paul E
Department of Physics and Astronomy, University of Tennessee, Knoxville, TN, 37996, USA.
Min H. Kao Department of Electrical Engineering and Computer Science, University of Tennessee, Knoxville, TN, 37996, USA.
Nat Commun. 2022 Jun 7;13(1):3168. doi: 10.1038/s41467-022-30752-3.
As the spatial dimension is lowered, locally stabilizing interactions are reduced, leading to the emergence of strongly fluctuating phases of matter without classical analogues. Here we report on the experimental observation of a one dimensional quantum liquid of He using nanoengineering by confining it within a porous material preplated with a noble gas to enhance dimensional reduction. The resulting excitations of the confined He are qualitatively different than bulk superfluid helium, and can be analyzed in terms of a mobile impurity allowing for the characterization of the emergent quantum liquid beyond the Luttinger liquid paradigm. The low dimensional helium system offers the possibility of tuning via pressure-from weakly interacting, all the way to the super Tonks-Girardeau gas of strongly interacting hard-core particles.
随着空间维度降低，局部稳定相互作用减少，导致出现没有经典对应物的物质强波动相。在此，我们报告通过纳米工程在预先镀有稀有气体的多孔材料内限制氦气，对一维氦量子液体进行实验观测，以增强维度降低。受限氦气产生的激发与体超流氦在性质上不同，并且可以根据移动杂质进行分析，从而在卢廷格液体范式之外对涌现的量子液体进行表征。低维氦系统提供了通过压力进行调节的可能性——从弱相互作用一直到强相互作用硬核粒子的超汤克斯 - 吉拉尔多大气体。
