Environmental Engineering Reference
In-Depth Information
Figure 4.5
Transmission coe
cient of (a) mode 0 and (b) mode 1 vs
W
C
for asymmetric y-branch three-terminal junction. The incident frequency
is 1.1
π
v
T
/
W
I
. Solid and dotted curves correspond to the transmission in
regions A and B, respectively [89].
phonons is independent of the temperature. However, the three-
terminal systems may offer a proper option for ballistic thermal
rectificationbyintroducingincoherencetothephonontransmission
from the third terminal, which is confirmed by Zhang
et al.
[91].
They found that ballistic thermal rectification exists in asymmetric
three-terminal atomic nanojunctions, even in symmetric three-
terminalstructureswithspin-phononinteraction.Morerecently,the
