منابع مشابه
Negative Magnetoresistance in Amorphous Indium Oxide Wires
We study magneto-transport properties of several amorphous Indium oxide nanowires of different widths. The wires show superconducting transition at zero magnetic field, but, there exist a finite resistance at the lowest temperature. The R(T) broadening was explained by available phase slip models. At low field, and far below the superconducting critical temperature, the wires with diameter equa...
متن کاملPerovskite oxide superlattices: Magnetotransport and magnetic properties.
We have fabricated perovskite superlattices consisting of two ferromagnetic metallic oxides: La0.67Ca0.33MnO3 ~LCMO! and SrRuO3 ~SRO!. We have investigated the magnetotransport and magnetic properties of a series of samples, in which the layer thickness of LCMO is fixed and that of SRO varied from 0 to 20 unit cells. The magnetoresistance ratio in a superlattice can be increased by a factor of ...
متن کاملTopological Oxide Insulator in Cubic Perovskite Structure
The emergence of topologically protected conducting states with the chiral spin texture is the most prominent feature at the surface of topological insulators. On the application side, large band gap and high resistivity to distinguish surface from bulk degrees of freedom should be guaranteed for the full usage of the surface states. Here, we suggest that the oxide cubic perovskite YBiO3, more ...
متن کاملInfluence of perovskite termination on oxide heteroepitaxy
We report a combined high-temperature scanning tunneling microscopy, ion scattering spectroscopy, and photoelectron spectroscopy study of bare lanthanum aluminate LaAlO3 LAO and of the initial stages of anatase TiO2 growth on LAO 001 . LAO 001 exhibits mixed La–O and Al–O2 surface terminations at 400 °C. Heteroepitaxial TiO2, grown by evaporating Ti metal in O2, nucleates near step edges, growi...
متن کاملVacancies Job in Oxide Perovskite Thin Films
Point defects can affect considerably the structural, magnetic, and transport properties of perovskite-structure materials with chemical formula ABO3. Oxygen vacancies (VO), for example, enable ionic conductivity in perovskite-based solid solutions to be used for electrochemical applications such as solid oxide fuel and electrolysis cells [1]. Likewise, VO can distort significantly the equilibr...
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ژورنال
عنوان ژورنال: Science
سال: 2002
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.295.5558.1195a