Voltage-driven multistability and chaos in magnetic films

Susana Contreras-Celada, Marcel G. Clerc, Saliya Coulibaly, René G. Rojas, Alejandro O. Leon

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The control of magnetization dynamics has allowed numerous technological applications. Magnetization dynamics can be excited by, e.g., alternating magnetic fields, charge and spin currents, and a voltage-induced control of interfacial properties. An example of the last mechanism is the voltage-controlled magnetic anisotropy effect, which can induce magnetization precessions and switchings with low-power consumption. Time-dependent voltage-controlled magnetic anisotropy can induce complex dynamic behaviors for magnetization. This work studies the magnetization dynamics of a single magnetic nano-oscillator forced with a time-dependent voltage-controlled magnetic anisotropy. Unexpectedly, the oscillator displays multistable regimes, i.e., distinct initial conditions evolve towards different oscillatory states. When voltage is changed the oscillatory state exhibits period-doubling route to chaos. The chaotic behavior is numerically demonstrated by the determination of the largest Lyapunov exponent.

Original languageEnglish
Article number169793
JournalJournal of Magnetism and Magnetic Materials
StatePublished - 15 Nov 2022


  • Chaos
  • Dynamical systems
  • Landau–lifshitz equation
  • Magnetization dynamics
  • Nano-oscillators
  • Voltage-controlled magnetic anisotropy


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