Phys.org July 6, 2022
As the spatial dimension is lowered, locally stabilizing interactions are reduced, leading to the emergence of strongly fluctuating phases of matter without classical analogues. A team of researchers in the US (University of Tennessee, Argonne National Laboratory, Caltech, University of Indiana) describes the experimental observation of a one-dimensional quantum liquid of 4He using nanoengineering by confining it within a porous material preplated with a noble gas to enhance dimensional reduction. The resulting excitations of the confined 4He 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. Next, they plan to use this new model system to study helium at high densities and low densities — comparable to electrons in a thin wire, and one-dimensional arrays of atoms used in quantum information science…read more. Open Access TECHNICAL ARTICLEÂ
Adsorption and structure inside nanopores. Credit: Nature Communications volume 13, Article number: 3168 (2022)Â