Negative differential conductance in metallic double quantum dot structures
We show that negative differential conductance (NDC) can be observed in metallic quantum
dot structures. For a simple model at zero temperature we have derived an analytical
expression for the current–voltage characteristics and a condition for observing NDC. For
devices with gates at finite temperatures, using the Monte Carlo method we have suggested
diagrams describing a correlation between the gate capacitance or temperature and the
inter-dot coupling in producing (or removing) NDC.
dot structures. For a simple model at zero temperature we have derived an analytical
expression for the current–voltage characteristics and a condition for observing NDC. For
devices with gates at finite temperatures, using the Monte Carlo method we have suggested
diagrams describing a correlation between the gate capacitance or temperature and the
inter-dot coupling in producing (or removing) NDC.
Abstract
We show that negative differential conductance (NDC) can be observed in metallic quantum dot structures. For a simple model at zero temperature we have derived an analytical expression for the current–voltage characteristics and a condition for observing NDC. For devices with gates at finite temperatures, using the Monte Carlo method we have suggested diagrams describing a correlation between the gate capacitance or temperature and the inter-dot coupling in producing (or removing) NDC.
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