Abstract

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 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. 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.

Helium isotopes are interesting platforms for testing the quantum properties of fluids. Here the authors demonstrate quantum one-dimensional behaviour of helium (4He) confined in nanopores by using neutron scattering.

Details

Title
Experimental realization of one dimensional helium
Author
Del Maestro, Adrian 1   VIAFID ORCID Logo  ; Nichols, Nathan S. 2 ; Prisk, Timothy R. 3 ; Warren, Garfield 4 ; Sokol, Paul E. 4   VIAFID ORCID Logo 

1  University of Tennessee, Department of Physics and Astronomy, Knoxville, USA (GRID:grid.411461.7) (ISNI:0000 0001 2315 1184); University of Tennessee, Min H. Kao Department of Electrical Engineering and Computer Science, Knoxville, USA (GRID:grid.411461.7) (ISNI:0000 0001 2315 1184); Institute for Advanced Materials and Manufacturing, University of Tennessee, Knoxville, USA (GRID:grid.411461.7) (ISNI:0000 0001 2315 1184) 
2  Data Science and Learning Division, Argonne National Laboratory, Argonne, USA (GRID:grid.187073.a) (ISNI:0000 0001 1939 4845) 
3  California Institute of Technology, Division of Chemistry and Chemical Engineering, Pasadena, USA (GRID:grid.20861.3d) (ISNI:0000000107068890) 
4  Indiana University, Department of Physics, Bloomington, USA (GRID:grid.411377.7) (ISNI:0000 0001 0790 959X) 
Publication year
2022
Publication date
2022
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1038/s41467-022-30752-3
ProQuest document ID
2673708432
Copyright
© The Author(s) 2022. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.