Transport in the Low Conductance Regime

Part of the NanoScience and Technology book series (NANO)

5.7 Summary

In this chapter we have presented an overview over the most common methods used in tunneling problems, which are, in increasing order of complexity: the Tersoff-Hamann model, the Bardeen model, the Landauer-Büttiker model, and the Keldysh model. The treatment of the tunneling junction in these models is described by one of the following: restricted to the surface only (Tersoff-Hamann); includes both sides of the junction, without considering interference effects (Bardeen); is based on elastic tunneling conditions (Landauer-Büuttiker); includes the full nonequilibrium formulation of the problem (Keldysh). Readers interested in a general formulation of transport theory are referred to the previous chapter, where the whole framework is treated in some detail.


Tunneling Junction Tunneling Current Magnetic Tunneling Junction Separation Surface Unoccupied State 
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