  In this brief report, we propose a network model named crossed double cycles,
which are completely symmetrical and can be considered as the extensions of
nearest-neighboring lattices. The synchronizability, measured by eigenratio
$R$, can be sharply enhanced by adjusting the only parameter, crossed length
$m$. The eigenratio $R$ is shown very sensitive to the average distance $L$,
and the smaller average distance will lead to better synchronizability.
Furthermore, we find that, in a wide interval, the eigenratio $R$ approximately
obeys a power-law form as $R\sim L^{1.5}$.

Statistical Mechanics