Title:
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Fréedericksz transition in a periodic magnetic field
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Author:
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Torrent, M. C. (Maria Carme); Sagués i Mestre, Francesc; Arias, F.; San Miguel Ruibal, Maximino
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Other authors:
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Universitat de Barcelona |
Abstract:
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We study the Fréedericksz transition in a twist geometry under the effect of a periodic modulation of the magnitude of the applied magnetic field. We find a shift of the effective instability point and a time-periodic state with anomalously large orientational fluctuations. This time-periodic state occurs below threshold and it is accompanied by a dynamically stabilized spatial pattern. Beyond the instability the emergence of a transient pattern can be significantly delayed by a fast modulation, allowing the observation of pattern selection by slowing down the reorientational dynamics. |
Subject(s):
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-Cristalls líquids -Transformacions de fase -Liquid crystals -Phase transformations (Statistical physics) |
Rights:
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(c) The American Physical Society, 1988
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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