Quasi-2D Liquid He-3

Abstract

Quantum Monte Carlo simulations at zero temperature of an ensemble of He-3 atoms adsorbed on Mg and Alkali substrates yield strong evidence of a thermodynamically stable liquid He-3 monolayer on all Alkali substrates, with the possible exception of Li. The effective 2D density is close to 0.02$ inverse square Angstroms on Na, making it the lowest density liquid in Nature. Its existence is underlain by zero-point atomic motion perpendicular to the substrate, whose effect is softening the short-range repulsion of the helium interatomic potential. The monolayer films should turn superfluid at a temperature of order 1 mK. No liquid film is predicted to form on Mg, or on stronger substrates such as graphite.

Three figures in color

References in corpus (2)

• Population size bias in Diffusion Monte Carlo
• Observation of Self-binding in Monolayer ${}^3$He

Cited by in corpus (11)

• Ground-state pressure of quasi-2D Fermi and Bose gases
• Fermi-to-Bose crossover in a trapped quasi-2D gas of fermionic atoms
• Liquid and solid phases of 3He on graphite
• Effective theory for ultracold strongly interacting fermionic atoms in two dimensions
• Tuneable defect interactions and supersolidity in dipolar quantum gases on a lattice potential
• 3He on preplated graphite
• Dipolar bosons in one dimension: the case of longitudinal dipole alignment
• Role of the confinement-induced effective range on the thermodynamics of a strongly correlated Fermi gas in two dimensions
• Low-density phases of ${}^3$He monolayers adsorbed on graphite
• Superconducting Niobium Calorimeter for Studies of Adsorbed Helium Monolayers
• Thermodynamic Geometry of two-dimensional square-well fluids