Static Structure Factor of Two-Dimensional Liquid 3He Adsorbed on Graphite

Liquid 3 He is a model system for strongly correlated Fermi liquids. For this reason, many X-ray and neutron scattering experiments have been performed to understand the structure and dynamics of this quantum fluid. We have recently shown that two-dimensional liquid 3 He sustains long-lived zero-sou...

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Bibliographic Details
Published in:Journal of low temperature physics 2012, Vol.169 (5-6), p.367-376
Main Authors: Sultan, A., Meschke, M., Lauter, H.-J., Godfrin, H.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Condensed Matter
Condensed Matter Physics
Magnetic Materials
Magnetism
Physics
Physics and Astronomy
Strongly Correlated Electrons
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Summary:Liquid 3 He is a model system for strongly correlated Fermi liquids. For this reason, many X-ray and neutron scattering experiments have been performed to understand the structure and dynamics of this quantum fluid. We have recently shown that two-dimensional liquid 3 He sustains long-lived zero-sound excitations at large wave-vectors (Godfrin et al., Nature, 483:576, 2012 ). Here we show that its static structure factor can be obtained with reasonable accuracy by integrating the experimental S ( Q , ω ) over a suitable energy range. A good agreement is found between the static structure factor deduced from the experiment and theoretical models: Quantum Monte Carlo simulations and Dynamical Many Body Theory (DMBT). At high wave-vectors, the experimental values are underestimated because of the limited accessible phase space; nevertheless, even at atomic wave-vectors a semi-quantitative agreement is observed with the theoretical predictions.
ISSN:0022-2291
1573-7357
DOI:10.1007/s10909-012-0649-9