Period-doubling bifurcation cascade observed in a ferromagnetic nanoparticle under the action of a spin-polarized current

Horley, Paul; Kushnir, Mykola; Morales-Meza, Mishel; Sukhov, Alexander; Rusyn, Volodymyr

doi:10.1016/j.physb.2015.12.010

Cited by 10 publications

(2 citation statements)

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“…63 This behavior is part of a class of scaling phenomena known as period-doubling cascades that have been observed in nature in a wide range of physical systems and are mathematically investigated by means of bifurcation theory. [64][65][66][67] Despite such phenomena are well-known for dynamical systems and a link with spatially modulated phases of matter has been made 1 , they have not yet been observed experimentally. We believe that our observation of domain periodicity halving is not exclusively characteristic of the system under investigation, but represents a more general mechanism of transformation in materials with periodic structures.…”

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confidence: 99%

Periodicity-Doubling Cascades: Direct Observation in Ferroelastic Materials

et al. 2019

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Very sensitive responses to external forces are found near phase transitions. However, phase transition dynamics and pre-equilibrium phenomena are difficult to detect and control. We have directly observed that the equilibrium domain structure following a phase transition in BaTiO3, a ferroelectric and ferroelastic material, is attained by halving of the domain periodicity, sequentially and multiple times. The process is reversible, displaying periodicity doubling as temperature is increased. This observation is backed theoretically and can explain the fingerprints of domain period multiplicity observed in other systems, strongly suggesting this as a general model for pattern formation during phase transitions in ferroelastic materials. TEXT (INTRODUCTION)The current interest in adaptable electronics calls for new paradigms of material systems with multiple metastable states. Functional materials with modulated phases 1 bring interesting possibilities in this direction, as long as we are able to tune the stability of these available states.Ferroic materials are good prospective candidates because the modulation can be controlled by external magnetic, electric or stress fields. In magnetic materials, the presence of competing interaction between spins can lead to commensurate or incommensurate modulated structures,

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Section: (Conclusion)mentioning

confidence: 99%

Periodicity-Doubling Cascades: Direct Observation in Ferroelastic Materials

et al. 2019

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“…In the area of engineering, chaos has great potential in many technological disciplines, such as in information and computer sciences, power systems protection, liquid mixing, flow dynamics, economics, magnetism, biomedical systems analysis etc. [5][6][7][8].…”

Section: Formulation Of the Problemmentioning

confidence: 99%