Reversal Time of Jump-Noise Dynamics for Large Nucleation

Arun Parthasarathy, Shaloo Rakheja

Research output: Contribution to journalArticle

Abstract

The jump-noise is a phenomenological stochastic process used to model the thermal fluctuation of magnetization in nanomagnets. In this paper, the large nucleation regime of jump-noise dynamics is studied, and its reversal time is characterized from Monte Carlo simulations and analysis. Results show that the reversal time of jump-noise dynamics for large nucleation is asymptotically equal to the time constant associated with a single jump-noise scattering event from the energy minimum in the energy landscape of the magnetization. The reversal time for large nucleation depends linearly on the height of the energy barrier for large barriers. The significance of the large nucleation regime of jump-noise dynamics to phenomenologically explain the magnetoelectric switching of antiferromagnetic order parameter is also prospected.

Original languageEnglish (US)
Article number4300103
JournalIEEE Transactions on Magnetics
Volume55
Issue number2
DOIs
StatePublished - Feb 2019

Keywords

  • Jump-noise
  • large nucleation
  • magnetization reversal

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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