نتایج جستجو برای: xmnx

تعداد نتایج: 86  

2006
F. Kronast R. Ovsyannikov A. Vollmer H. A. Dürr W. Eberhardt D. Schmitz L. W. Molenkamp

We applied x-ray absorption spectroscopy and x-ray magnetic circular dichroism XMCD at the Mn 2p-3d resonances to study the Mn 3d electronic configuration and the coupling of Mn 3d magnetic moments in various Ga1−xMnxAs films. The homogeneity of the Mn depth profile throughout the Ga1−xMnxAs film was tested by additional structure-sensitive x-ray resonant reflectivity measurements. In all inves...

2016
J Sánchez-Barriga A Varykhalov G Springholz H Steiner R Kirchschlager G Bauer O Caha E Schierle E Weschke A A Ünal S Valencia M Dunst J Braun H Ebert J Minár E Golias L V Yashina A Ney V Holý O Rader

Magnetic doping is expected to open a band gap at the Dirac point of topological insulators by breaking time-reversal symmetry and to enable novel topological phases. Epitaxial (Bi(1-x)Mn(x))2Se3 is a prototypical magnetic topological insulator with a pronounced surface band gap of ∼100 meV. We show that this gap is neither due to ferromagnetic order in the bulk or at the surface nor to the loc...

2005
Y. K. Kuo K. M. Sivakumar C. R. Lin C. S. Lue S. T. Lin

This work presents measurements of the electrical resistivity srd, Seebeck coefficient, and thermal conductivity skd of icosahedral Al70Pd22.5sRe1−xMnxd7.5 quasicrystals from 10 to 300 K. A series of quasicrystals was prepared with x=0, 0.1, 0.2, 0.3, 0.5, 0.6, 0.8, and 1.0 to systematically study the effect of substitution. The electrical resistivity increases as the temperature decreases, sug...

2008
V. Holý R. T. Lechner S. Ahlers L. Horák T. H. Metzger A. Navarro-Quezada A. Trampert D. Bougeard G. Bauer

V. Holý,1 R. T. Lechner,2 S. Ahlers,3 L. Horák,1 T. H. Metzger,4 A. Navarro-Quezada,2 A. Trampert,5 D. Bougeard,3 and G. Bauer2 1Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Prague, Czech Republic 2Institut für Halbleiterund Festkörperphysik, Johannes Kepler Universität Linz, 4040 Linz, Austria 3Walter Schottky Institut, Technische Universität München, Am Coulomb...

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