Direct imaging of lattice strain-induced stripe phases in an   optimally-doped manganite
  In a manganite film without quenched disorder, we show texturing in the form of insulating and metallic stripes above and below Curie temperature (Tc), respectively, by high resolution scanning tunneling microscopy/spectroscopy (STM/STS). The formation of these stripes involves competing orbital and charge orders, and are an outcome of overlapping electron wave-functions mediated by long-range lattice strain. Contrary to popular perception, electronically homogeneous stripe phase underlines the efficacy of the lattice strain in bringing about charge density modulation and in impeding the cross-talk between the order parameters, which otherwise evolves inhomogeneously in the form of orbitally-ordered insulating and orbitally disordered metallic phases. 
L. Sudheendra, V. Moshnyaga, B. Damaschke and K. Samwer   (1.Physikalisches Institut, Friedrich-Hund-Platz 1, Universitaet G...