V. V. Zavjalov, S. Autti, V. B. Eltsov, P. J. Heikkinen, “Measurements of anisotropic mass of magnons, confined in a harmonic trap in superfluid <nobr>$^3$</nobr>He–B”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2015, Volume 101, Issue 12,Pages <nobr>902

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CONDENSED MATTER

Measurements of anisotropic mass of magnons, confined in a harmonic trap in superfluid $^3$He–B

V. V. Zavjalov, S. Autti, V. B. Eltsov, P. J. Heikkinen

Low Temperature Laboratory, Department of Applied Physics, Aalto University, PO Box 15100, FI-00076 AALTO, Finland

Abstract: We can pump magnons to a nearly harmonic magneto-textural trap in superfluid $^3$He–B. Using the NMR spectroscopy of levels in the trap we have measured the anisotropic magnon mass and related values of the spin-wave velocities. Based on our measurements we provide values of the Fermi-liquid parameter $F^a_1$.

Received: 06.05.2015

Language: English

DOI: 10.7868/S0370274X15120061