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Quantum pumping with adiabatically modulated barriers in graphene
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View: Figures


Image of FIG. 1.
FIG. 1.

The tunneling scenario of an adiabatic quantum pump. The two shadowed blocks represent the left and right electron reservoirs, respectively. The two barriers oscillate adiabatically in time. The middle bar indicates the single-particle state between the two barriers. The Fermi levels of the two reservoirs are the same and are leveled to the single-particle state within the conductor. indicate the transmission amplitudes between one of the two reservoirs and the middle single-particle state.

Image of FIG. 2.
FIG. 2.

Angular dependence of the PC for different quasiparticle energy.

Image of FIG. 3.
FIG. 3.

Energy dependence of the angle-averaged PC.

Image of FIG. 4.
FIG. 4.

Angular dependence of the static transmission probability of tunneling from the left reservoir to the right without gate potential oscillation for different heights of the right barrier. The height of the left barrier is fixed to be 100 meV. The Fermi energy of the reservoir is 72 meV.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Quantum pumping with adiabatically modulated barriers in graphene