The role of external single-well potential, spatially varying temperature, spatially varying trap potential and time varying force on the impurity dynamics

Tibebe Birhanu (), Yigermal Bassie and Yoseph Abebe
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Tibebe Birhanu: University of Gondar
Yigermal Bassie: Wolkite University
Yoseph Abebe: Debre Markos University

The European Physical Journal B: Condensed Matter and Complex Systems, 2023, vol. 96, issue 1, 1-7

Abstract: Abstract In this paper, we study the role of external parabolic potential, spatially varying temperature, spatially varying trap potential, and time-varying weak signal on the impurities walking from one lattice site to another lattice site. Both temperature and trap potential effects force the system to undergo a phase transition from single well potential to triple well effective potential. In addition, the role of time-varying signal rocks the triple well effective potential and helps the impurities easily surmount the potential barrier. As a result, we study the characterization of stochastic resonance both analytically and numerically. Graphical abstract

Date: 2023
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DOI: 10.1140/epjb/s10051-023-00478-2

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