1,721,007 research outputs found
Different manganite systems studied by x-ray absorption and emission techniques at the Mn absorption edge
No full textInfluence of spin-fluctuations on the normal state properties of superconducting Sr1-xLaxCuO2±δ thin films grown by layer-by-layer shuttered molecular-beam epitaxy
No full text(LaMnO3)2n(SrMnO3)n superlattices studied by polarized x-ray absorption at Mn L and O K edges
No full textGrowth and characterization of charge carrier spatially confined SrMnO3/La0.7Sr0.3MnO3/SrMnO3 trilayers
No full text(SrMnO3)x/(La0.7Sr0.3MnO3)y/(SrMnO3)z (x,y,z=number of unit cells) trilayers have been grown using a Reflection High Energy Electron Diffraction calibrated layer-by-layer molecular beam epitaxy technique. X-Ray Reflectivity and X-Ray Diffraction measurements confirm the structural quality and the abruptness of the interfaces. Electrical transport property analysis as a function of temperature show effects related to the spatial confinement of the charge carriers induced by the layering. These results are important in view of future developments of oxide based heterostructures for innovative quantum devices
Charge and magnetic excitations in hole- and electron-doped infinite layer cuprate superconductors
No full textSynthesis and properties of highly metallic orbital-ordered A-site manganites
No full textIn perovskite oxide materials, because of
the insertion of multiple valence states ions (e.g., Mn
in manganites) at atomic A-site (i.e., at the center of
perovskite cubic cell), an enhancement of the ferromagnetic
metallic state together with a strong orbital
order of Mn-ions is established. Such a feature goes
beyond the conventional theoretical framework for
which the kinetic energy of the free charge carriers
prevents the occurrence of a long-range orbital order.
We do provide a complete physical characterization of
these so-called A-site manganites by comparing
transport and structural properties of La0.7Sr0.3MnO3
and LaMnO3 thin films with different excess Mn
content and different oxygen content. A viable route to
successfully grow such class of materials as a function
of temperature and oxygen environment is provided.
The observed multi-order phase coexistence opens
unexplored perspectives toward the synthesis of new
intrinsic multi-functional materials
Enhanced transport properties in LaxMnO3−delta thin films epitaxially grown on SrTiO3 substrates: The profound impact of the oxygen content
No full text
- …
