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101 papers · 1 filter
Epitaxial-strain effect on charge/orbital order in Pr0.5Ca0.5MnO3 films
D. Okuyama, M. Nakamura, Y. Wakabayashi +7
Effect of growth orientation on charge- and orbital-ordering (CO-OO) phenomena has been studied for Pr0.5Ca0.5MnO3 epitaxial thin films fabricated on (LaAlO3)0.3-(SrAl0.5Ta0.5O3)0.…
Bipolaron in the t-J model coupled to longitudinal and transverse quantum lattice vibrations
Lev Vidmar, Janez Bonca, Sadamichi Maekawa +1
We explore the influence of two different polarizations of quantum oxygen vibrations on the spacial symmetry of the bound magnetic bipolaron in the context of the t-J model by usin…
Optical Properties of Correlated Materials -- or Why Intelligent Windows may look Dirty
Jan M. Tomczak, Silke Biermann
Materials with strong electronic Coulomb correlations play an increasing role in modern materials applications. "Thermochromic" systems, which exhibit thermally induced changes in…
Lattice-form dependent orbital shape and charge disproportionation in charge- and orbital-ordered manganites
D. Okuyama, Y. Tokunaga, R. Kumai +3
The orbital shapes and charge disproportionations at nominal Mn and Mn sites for the charge- and orbital-ordered phases have been studied on half-doped manganites Pr(…
Effective Coulomb interactions in solids under pressure
Jan M. Tomczak, T. Miyake, R. Sakuma +1
Correlated materials are extremely sensitive to external stimuli, such as temperature or pressure. Describing the electronic properties of such systems often requires applying many…
Interface reconstruction in V-oxide heterostructures determined by x-ray absorption spectroscopy
H. Wadati, D. G. Hawthorn, J. Geck +7
We present an x-ray absorption study of the dependence of the V oxidation state on the thickness of LaVO (LVO) and capping LaAlO (LAO) layers in the multilayer structure of…