Dispersion relation of Landau elementary excitations and thermodynamic properties of superfluid 4He

The dispersion relation ε(k) of the elementary excitations of superfluid 4He has been measured at very low temperatures, from saturated vapor pressure up to solidification, using a high-flux time-of-flight neutron-scattering spectrometer equipped with a high-spatial-resolution detector (105 "pi...

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Veröffentlicht in:	Physical review. B 2021-03, Vol.103 (10), p.1
Hauptverfasser:	Godfrin, H, Beauvois, K, Sultan, A, Krotscheck, E, Dawidowski, J, Fåk, B, Ollivier, J
Format:	Artikel
Sprache:	eng
Schlagworte:	Dispersion curve analysis Elementary excitations Excitation Fluids General Physics Low temperature Neutron flux Physics Power series Series expansion Solidification Superfluidity Temperature dependence Thermodynamic properties Vapor pressure
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