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Condensed Matter > Mesoscale and Nanoscale Physics

arXiv:cond-mat/9908423 (cond-mat)
[Submitted on 28 Aug 1999]

Title:Domain Wall Motion in the Presence of Nuclear Spins

Authors:M. Dube, P. C. E. Stamp
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Abstract: We investigate the motion of a domain wall in the presence of a dynamical hyperfine field. At temperature T high compared to the hyperfine coupling, the nuclear spins create a spatially random potential landscape, with dynamics dictated by the nuclear relaxation time $T_2$. The distribution of the domain wall relaxation times (both in the thermal and quantum regimes) can show a long tail, characteristic of stochastic processes where rare events are important. Here, these are due to occasional strong fluctuations in the nuclear spin polarisation.
Comments: 6 pages, Latex
Subjects: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Cite as: arXiv:cond-mat/9908423 [cond-mat.mes-hall]
  (or arXiv:cond-mat/9908423v1 [cond-mat.mes-hall] for this version)
  https://doi.org/10.48550/arXiv.cond-mat/9908423
Journal reference: J. Low T. Phys. 113, 1085 (1998)

Submission history

From: Martin Dube [view email]
[v1] Sat, 28 Aug 1999 12:44:35 UTC (12 KB)
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