Band gaps and electronic structure of alkaline-earth and post-transition-metal oxides
نویسندگان
چکیده
منابع مشابه
Spectroscopic studies of metal high-k dielectrics: transition metal oxides and silicates, and complex rare earth/transition metal oxides
G. Lucovsky 1, 2, , J. G. Hong, C. C. Fulton, Y. Zou, R. J. Nemanich, H. Ade, D. G. Scholm, and J. L. Freeouf 5 1 Department of Physics, North Carolina State University, USA 2 Department of Materials Science & Engineering, North Carolina State University, USA 3 Department of Electrical & Computer Engineering, North Carolina State University, USA 4 Department of Materials Science & Engineering, ...
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Density functional plus dynamical mean field calculations are used to show that in transition metal oxides, rotational and tilting (GdFeO(3)-type) distortions of the ideal cubic perovskite structure produce a multiplicity of low-energy optical transitions which affect the conductivity down to frequencies of the order of 1 or 2 mV (terahertz regime), mimicking non-Fermi-liquid effects even in sy...
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Jason Graetz,1 Channing C. Ahn,1 Hao Ouyang,2 Peter Rez,3 and Brent Fultz1 1Division of Engineering and Applied Science M/C 138-78, California Institute of Technology, Pasadena, California 91125, USA 2National Chung Hsing University, Department of Materials Engineering, Taichung, Taiwan 402, Republic of China 3Department of Physics and Astronomy and CSSS, Arizona State University, Tempe, Arizon...
متن کاملElectronic structure and transport measurements of amorphous transition-metal oxides: observation of Fermi glass behavior
We characterized the conduction mechanisms in thin sputtered films of three representative binary Me–O (Me = Ta, W, and Nb) systems as a function of oxygen content, by combining in situ chemical state and electronic band structure studies from X-ray photoemission with temperature-dependent transport measurements. Despite certain differences, these amorphous films all displayed Fermi glass behav...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2010
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.81.245123