Biomedical Engineering Reference
In-Depth Information
Fig. 7.15
Triple dot I-SET: polarized vs. unpolarized configuration. Panel A—Current vs. bias
and gate voltage for unpolarized leads. Panel D—Current vs. bias and gate voltage for polarized
leads (polarization
P
5 particle transition for
both configurations. The selective spin blocking is analogous to the one of the benzene I-SET
(Fig.
7.14
). From [
21
]
=
0
.
7). Panels B and C—Blow up of the 6
→
other states lift the blocking. However, as shown in Figs.
7.14
and
7.15
, the current
is completely blocked only at specific values of the bias voltage. The explanation of
this phenomenon relies on two observations:
(i) The blocking state (Fig.
7.16
) must be antisymmetric with respect to the plane
perpendicular to the system and passing through its center and the atom
