Surface spin waves in 3He-A, a probe for vortex phenomena in narrow gaps

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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en

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4

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Physical Review Letters, Volume 58, issue 7, pp. 678-681

Abstract

We report measurements on a new collective spin-wave mode trapped by the textural boundary layers of 3He-A within a stack of thin Mylar plates. The surface mode was seen as a new peak in the cw NMR spectrum measured at H0=284 Oe. Rotation of the sample, with orthogonal to the gaps, increased the spectral weight of the surface mode, indicating an increase in the textural boundary layers caused by a counterflow-induced transition. This phenomenon was used to study vortex creation and persistent currents.

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Hakonen, P J, Nummila, K K, Simola, J T, Skrbek, L & Mamniashvili, G 1987, 'Surface spin waves in 3He-A, a probe for vortex phenomena in narrow gaps', Physical Review Letters, vol. 58, no. 7, pp. 678-681. https://doi.org/10.1103/PhysRevLett.58.678