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Volumn 79, Issue 3, 2009, Pages

Hopping dynamics of interacting polarons

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EID: 60349091034     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.79.035113     Document Type: Article
Times cited : (16)

References (50)
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    • 2 monotonically decreases with the distance z to the interface.
    • 2 monotonically decreases with the distance z to the interface.
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    • The condition for adiabatic transport is fulfilled in such devices, as the ratio between the left-hand side and the right-hand side of Eq. 37 is ∼0.3 at room temperature. Actually such value places these devices close to the adiabatic/nonadiabatic crossover, where the polaronic activation energy changes from ΔP = (g2 /4k) -t to the nonadiabatic value ΔP = (g2 /4k). This can be at the origin of the missing correction -t in the activation energy reported in Refs..
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    • Interaction 1 was derived from the macroscopic laws of electrostatics that are valid at distances >a. In real interfaces, the discrete nature of the polarizable medium should lead to an additional short-range cutoff at lengths on the order of the interionic spacing. To a first approximation, this effect can be incorporated by treating z as an effective phenomenological quantity which includes both the channel-interface distance and the lattice cutoff.
    • Interaction 1 was derived from the macroscopic laws of electrostatics that are valid at distances >a. In real interfaces, the discrete nature of the polarizable medium should lead to an additional short-range cutoff at lengths on the order of the interionic spacing. To a first approximation, this effect can be incorporated by treating z as an effective phenomenological quantity which includes both the channel-interface distance and the lattice cutoff.


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