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6 Result(s)

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  1. No Access

    Article

    Thermally activated diffusion of impurities along a semiconductor layer

    The dynamics of impurities that walk along a semiconductor layer assisted by thermal noise strength and quartic potential is explored analytically and numerically. Applying two cold spots in the vicinity of th...

    Yoseph Abebe, Tibebe Birhanu, Lemi Demeyu, Mesfin Taye… in The European Physical Journal B (2022)

  2. Article

    Erratum to: Stochastic resonance of charge carriers diffusing in a nonhomogeneous medium with nonhomogeneous temperature

    Berhanu Aragie, Yergou B. Tatek, Mulugeta Bekele in The European Physical Journal B (2014)

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  3. No Access

    Article

    Impurity diffusion in a harmonic potential and nonhomogeneous temperature

    We propose different ways of manipulating the dispersion of impurities along a semiconductor layer during heat treatment. The impurities undergo a random walk assisted by a nonlinear harmonic potential and non...

    Berhanu Aragie, Mesfin Asfaw, Lemi Demeyu… in The European Physical Journal B (2014)

  4. No Access

    Article

    Stochastic resonance of charge carriers diffusing in a nonhomogeneous medium with nonhomogeneous temperature

    We investigate the dynamics of charge carriers hop** from one trap to the other trap along an n-type semiconductor layer consisting of a spatially nonhomogeneous trap distribution of depth Φ assisted by thermal...

    Berhanu Aragie, Yergou B. Tatek, Mulugeta Bekele in The European Physical Journal B (2014)

  5. No Access

    Article

    Current, maximum power and optimized efficiency of a Brownian heat engine

    A microscopic heat engine is modeled as a Brownian particle in a sawtooth potential (with load) moving through a highly viscous medium driven by the thermal kick it gets from alternately placed hot and cold he...

    Mesfin Asfaw, Mulugeta Bekele in The European Physical Journal B - Condense… (2004)

  6. No Access

    Article

    Model-dependent nature of blowtorch effect on the escape and equilibration rates

    We analyze the relaxation behavior of a bistable system when the background temperature profile is inhomogeneous due to the presence of a localized hot region (blowtorch) on one side of the potential barrier. ...

    Solomon Fekade, Mulugeta Bekele in The European Physical Journal B - Condense… (2002)