We have investigated a new type of electronic charge-polarized state in
bilayer manganite, Pr(Sr$_{0.1}$Ca$_{0.9}$)$_{2}$Mn$_{2}$O$_{7}$ (PSCMO).
The PSCMO compound has two charge-orbital ordering (CO-OO) states with
respect to the direction of the or...
We have investigated a new type of electronic charge-polarized state in
bilayer manganite, Pr(Sr$_{0.1}$Ca$_{0.9}$)$_{2}$Mn$_{2}$O$_{7}$ (PSCMO).
The PSCMO compound has two charge-orbital ordering (CO-OO) states with
respect to the direction of the orbital stripe, which is clearly identified
by addressing the optical anisotropy. Notably, a charge-polarized state is
formed in the lower-temperature CO-OO state where the $c$-axis stacking
patterns of the lattice and the charge modulations along the $b$-axis match
with each other. We detail the correlation among the transport, the optical
and the structural properties in the charge and orbital-ordering-induced
charge-polarized states in bilayer manganite.