  We study heat and particle current circulation (CC) in quadratic fermionic
systems analysed using local Lindblad master equation. It was observed in an
earlier study \cite{Our_circulation} that CC occurs near the additional energy
degeneracy point (AEDP) in fermionic systems which have some form of asymmetry.
We find general analytical expression to support this observation for quadratic
fermionic networks. We then apply these ideas to the Su-Schrieffer-Heeger (SSH)
model with periodic boundary conditions and a tight binding model with unequal
hopping strengths in the upper and lower branches. In both these cases, we find
the specific conditions required for observing CC and study the behavior of
these currents with various system parameters. We find that having an unequal
number of fermionic sites in the upper and lower branches is enough for
generating CC in the SSH model. However, this asymmetry is not adequate for the
tight-binding model and we require unequal hopping strengths in the upper and
lower branches to induce CC in this model. Finally, we observe that for certain
system parameters, the onset point of particle and heat CC are not the same.
Based on all these observations, we describe how carefully examining the energy
spectrum of the system gives a great deal of information about the possibility
and behavior of CC in fermionic systems with asymmetries.
