Nonthermal broadening in the conductance of double quantum dot structures
Megjelenés dátuma: 2007
MTMT: 1205029
WoS ID: 000248540000071
Scopus ID: 34447576450
Absztrakt:
We study the transport properties of a double quantum dot (DQD)
molecule at zero and at finite temperature. The properties of
the
zero-temperature conductance depend on whether the level
attraction
between the symmetric and antisymmetric states of the DQD,
produced by
the coupling to the leads, exceeds or not the interdot
tunneling. For
finite temperature, we find a remarkable nonthermal broadening
effect
of the conductance resonance when the energy levels of the
individual
dots are detuned.
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