A generic signature of a fluctuating magnetic field: An additional turnover prior to the Kramers’ one

Mondal, Shrabani; Baura, Alendu; Das, Sudip Kumar; Bag, Bidhan Chandra

doi:10.1016/j.physa.2018.02.110

Cited by 10 publications

(20 citation statements)

References 80 publications

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“…The particle may be bounded harmonically along the other directions. This model system has been studied using recently proposed Langevin equation of motion in the presence of the FMF [12]. Our investigation shows versatile non-monotonic behavior in the variation of the rate constant as a function of strength of the time independent magnetic field.…”

Section: Introductionmentioning

confidence: 91%

“…The field is applied along z-direction i.e., B app = (0, 0, B(t)). The relevant Langevin equations of motion for this system can be written as follows [11,12];…”

Section: The Modelmentioning

confidence: 99%

“…In the above equations coordinate dependent conservative forces are derived from the following functional form for the potential energy, Another deterministic force in the Langevin equations of motion is due to the environment induced dissipative force which depends on the velocity of the particle and the damping strength, γ 0 . It considers the flow of the mechanical energy from the system to the surroundings as a signature of the unavoidable coupling [12] between these two.…”

Section: The Modelmentioning

confidence: 99%

“…The coupling strength [12] certainly depends on the nature of the interaction between the system and the constituents in the surroundings. Thus γ 0 also may depend on the composition of the electrolyte.…”

Section: The Modelmentioning

confidence: 99%

“…In the very recent Refs. [3][4][5][6][7][8][9][10][11][12], it has been shown that the conductivity of an electrolytic material can be tuned by an applied magnetic field. The objective of the present study is related to this issue.…”

Section: Introductionmentioning

confidence: 99%

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Mechanism of barrier crossing dynamics in the presence of both time dependent and independent magnetic fields

Mondal,

Biswas,

Bag

2021

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In this paper we have presented the mechanism of the barrier crossing dynamics of a Brownian particle which is coupled to a thermal bath in the presence of both time independent and fluctuating magnetic fields. Here the following three aspects are important in addition to the role of the thermal bath on the barrier crossing dynamics. Magnetic field induced coupling may introduce a resonance like effect. Another role of the field is that enhancement of its strength reduces the frequency factor of the barrier crossing rate constant. Finally, the fluctuating magnetic field introduces an induced electric field which activates the Brownian particle to cross the energy barrier. As a result of interplay among these aspects versatile non-monotonic behavior may appear in the variation of the rate constant as a function of the strength of the time independent magnetic field.

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Section: Introductionmentioning

confidence: 91%

“…The field is applied along z-direction i.e., B app = (0, 0, B(t)). The relevant Langevin equations of motion for this system can be written as follows [11,12];…”

Section: The Modelmentioning

confidence: 99%

Section: The Modelmentioning

confidence: 99%

Section: The Modelmentioning

confidence: 99%