Santanu K. Maiti, Arunava Chakrabarti
Magneto-transport of interacting electrons in a Sierpinski gasket fractal is
studied within a mean field approach. We work out the three-terminal transport
and study the interplay of the magnetic flux threading the planar gasket and
the dephasing effect introduced by the third lead. For completeness we also
provide results of the two-terminal transport in presence of electron-electron
interaction. It is observed that dephasing definitely reduces the transport,
while the magnetic field generates a continuum in the transmission spectrum
signaling a band of extended eigenstates in this non-translationally invariant
fractal structure. The Hubbard interaction and the dephasing introduced by the
third lead play their parts in reducing the average transmission, and opens up
gaps in the spectrum, but can not destroy the continuum in the spectrum.
View original:
http://arxiv.org/abs/1106.0215
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