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1992•Physical Review LettersRequires access

Resonant observation of the Landau field in superfluid B3 by NMR

Yu. M. Bunkov, S. N. Fisher, A. M. Guénault, C. J. Kennedy, G. R. Pickett

Open publisher page 23 citations

Abstract

We report the first experimental observation of the internal precession of the normal and superfluid magnetizations around the molecular Landau field in $^{3}\mathit{B}$. This mode is excited by cross relaxation with the conventional NMR precession of the total magnetization around an external field when the two fields have similar values. From NMR measurements down to 0.12${\mathit{T}}_{\mathit{c}}$ we conclude that the catastrophic relaxation phenomenon can be explained as a capture of the internal-precession mode by the Larmor precession.

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What this paper is about

We report the first experimental observation of the internal precession of the normal and superfluid magnetizations around the molecular Landau field in $^{3}\mathit{B}$. This mode is excited by cross relaxation with the conventional NMR precession of the total magnetization around an external field when the two fields have similar values. From NMR measurements down to 0.12${\mathit{T}}_{\mathit{c}}$ we conclude that the catastrophic relaxation phenomenon can be explained as a capture of the internal-precession mode by the Larmor precession.

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Available abstract

We report the first experimental observation of the internal precession of the normal and superfluid magnetizations around the molecular Landau field in $^{3}\mathit{B}$. This mode is excited by cross relaxation with the conventional NMR precession of the total magnetization around an external field when the two fields have similar values. From NMR measurements down to 0.12${\mathit{T}}_{\mathit{c}}$ we conclude that the catastrophic relaxation phenomenon can be explained as a capture of the internal-precession mode by the Larmor precession.

Key concepts: Larmor precession, Precession, Physics, Relaxation (psychology), Condensed matter physics, Magnetization, Field (mathematics), Superfluidity

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