نتایج جستجو برای: la2cuo4
تعداد نتایج: 181 فیلتر نتایج به سال:
M. Reehuis,1,2 C. Ulrich,1 K. Prokeš,2 A. Gozar,3,4 G. Blumberg,4 Seiki Komiya,5 Yoichi Ando,5 P. Pattison,6,7 and B. Keimer1 1Max-Planck-Institut für Festkörperforschung, Heisenbergstr. 1, D-70569 Stuttgart, Germany 2Hahn-Meitner-Institut, Glienicker Str. 100, D-14109 Berlin, Germany 3Brookhaven National Laboratory, Upton, New York 11973, USA 4Bell Laboratories Lucent Technologies, Murray Hill...
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The nature of the much debated valence state of an interstitial oxygen atom in oxygen-doped La2CuO4 is the subject of this paper. In model cluster calculations, we studied the position, charge, and spin state of the interstitial oxygen atoms in this superconductor. The models considered allow the interstitial oxygen to move off a symmetrical position, to have varying spin and charge, and to be ...
A method to analyze powder-diffraction line broadening is proposed and applied to some novel high-Tc superconductors. Assuming that both size-broadened and strain-broadened profiles of the pure-specimen profile are described with a Voigt function, it is shown that the analysis of Fourier coefficients leads to the Warren-Averbach method of separation of size and strain contributions. The analysi...
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