https://doi.org/10.1140/epjb/s10051-022-00342-9
Regular Article - Statistical and Nonlinear Physics
Vibrational resonance of ammonia molecule with doubly singular position-dependent mass
1
Department of Physics, Olabisi Onabanjo University, P.M.B. 2002, Ago-Iwoye, Ogun State, Nigeria
2
Department of Physical Sciences, Redeemer’s University, P.M.B. 230, Ede, Osun State, Nigeria
3
Department of Physics, Lancaster University, LA1 4YB, Lancaster, UK
a
roy-layinde.taiwo@oouagoiwoye.edu.ng
Received:
21
February
2022
Accepted:
26
April
2022
Published online:
10
May
2022
We examine vibrational resonance (VR) in a position-dependent mass (PDM) oscillator with doubly singular mass distribution function describing the vibrational inversion mode of NH
molecule. The impacts of the PDM parameters 
on VR were studied by computing the response amplitudes as functions of the amplitude of high-frequency component of the dual-frequency driving forces and the PDM parameters. We show for the first time that, beside the significant roles played by the parameters of the variable mass in inducing and controlling resonances similar to the forcing parameters, the variable mass parameters impact on the resonance characteristics by leading the system from single resonance into double resonance.
Kehinde A. Omoteso, Babatunde A. Oyero, A. Laoye and Uchechuwu E. Vincent contributed equally to this work.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2022
