Supernarrow spectral peaks near a kinetic phase transition in a driven, nonlinear micromechanical oscillator

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dc.creatorStambaugh, C.
dc.creatorChan, H. B.
dc.date2005-09-26
dc.date.accessioned2026-07-07T06:31:38Z
dc.date.available2026-07-07T06:31:38Z
dc.descriptionWe measure the spectral densities of fluctuations of an underdamped nonlinear micromechanical oscillator. By applying a sufficiently large periodic excitation, two stable dynamical states are obtained within a particular range of driving frequency. White noise is injected into the excitation, allowing the system to overcome the activation barrier and switch between the two states. While the oscillator predominately resides in one of the two states for most excitation frequencies, a narrow range of frequencies exist where the occupations of the two states are approximately equal. At these frequencies, the oscillator undergoes a kinetic phase transition that resembles the phase transition of thermal equilibrium systems. We observe a supernarrow peak in the power spectral densities of fluctuations of the oscillator. This peak is centered at the excitation frequency and arises as a result of noise-induced transitions between the two dynamical states.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0509667
dc.identifierhttp://arxiv.org/abs/cond-mat/0509667
dc.identifierPhys. Rev. Lett. 97, 110602 (2006)
dc.identifierdoi:10.1103/PhysRevLett.97.110602
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/98665
dc.subjectMesoscale and Nanoscale Physics
dc.titleSupernarrow spectral peaks near a kinetic phase transition in a driven, nonlinear micromechanical oscillator
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