Transport Properties of Films of Prussian Blue Analogues and Manganites

The CoFe Prussian blue analogue (PBA) is a coordination polymer, A$_j$Co$_k$[Fe(CN)$_6$] (A = K, Rb, Cs), that exhibits a photoinduced charge transfer.\footnote{O. Sato \emph{et al}., Science \textbf{272} (1996) 704.} The resulting changes in the magnetization and in the lattice parameter have been used to successfully apply stress on other pressure-sensitive materials, achieving photocontrol of the magnetic response.\footnote{ D.M. Pajerowski \emph{et al}., J. Am. Chem. Soc. \textbf{132} (2010) 4058.} The metal-to-insulator transition (MIT) is a prominent feature of the manganites, whose transition temperature can be tuned by applying various stimuli such as pressure or magnetic field.\footnote{H. J. Jeen and A. Biswas, Phys. Rev. B \textbf{83} (2011) 064408.} By coupling a layer of PBA over a thin film of manganite, the temperature for the MIT can be altered by the light-induced changes in the CoFe PBA.