Zobrazeno 1 - 10 of 105 pro vyhledávání: '"P. H. Dederichs"'
1
Local environment effects on exchange interactions in dilute magnetic semiconductors
Autor: Hiroshi Katayama-Yoshida, P. H. Dederichs, Kazunori Sato
Publikováno v: physica status solidi c. 3:4143-4146
We calculate effective exchange interactions in dilute magnetic semiconductors by taking local environment effects into account. The effects of local impurity configurations are considered by embedding a large cluster into the effective medium calcul
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::514ad26804fb0bdb8d3cbbbdba318d27
https://doi.org/10.1002/pssc.200672808
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2
Is High TC Possible in (Ga,Mn)N?: Monte Carlo Simulation vs. Mean Field Approximation
Autor: P. H. Dederichs, Kazunori Sato, H. Katayama-Yoshida
Publikováno v: Journal of Superconductivity. 18:33-36
The magnetic properties of diluted magnetic semiconductors (DMSs) are calculated from first-principles by mapping the ab initio results on a classical Heisenberg model. By using the Korringa–Kohn–Rostoker coherent potential approximation method w
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0b1d573669d16e7158fcf299df0a121a
https://doi.org/10.1007/s10948-005-2146-8
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3
First-principles study of magnetic interactions in $3d$ transition metal-doped phase-change materials
Autor: Hiroshi Katayama-Yoshida, Tetsuya Fukushima, Hitoshi Fujii, P. H. Dederichs, Wei Zhang, Elias Rabel, Riccardo Mazzarello, Rudolf Zeller, Kazunori Sato
Publikováno v: Physical review / B 90(14), 144417 (2014). doi:10.1103/PhysRevB.90.144417
Recently, magnetic phase-change materials have been synthesized experimentally by doping with 3d transition metal impurities. Here, we investigate the electronic structure and the magnetic properties of the prototypical phase-change material Ge2Sb2Te
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d6a98ba456a788fc30f306a20d624e0
https://hdl.handle.net/2128/8114
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4
Ab initiocalculations of residual resistivities for dilute Ni alloys
Autor: Ingrid Mertig, Rudolf Zeller, P. H. Dederichs
Publikováno v: Physical Review B. 47:16178-16185
We report residual resistivity calculations for dilute Ni alloys which are based on density-functional theory and the Korringa-Kohn-Rostoker Green's-function method. The transport is described quasiclassically by means of the Boltzmann equation using
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24746b40e337c9fcd713bd0d30002db6
https://doi.org/10.1103/physrevb.47.16178
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6
LDA + U calculations for 4d impurities in Rb
Autor: P. H. Dederichs, V. I. Anisimov
Publikováno v: Solid State Communications. 84:241-244
We present improved density functional calculations for the electronic structure of 4d transition metal impurities in Rb. Exchange and correlation are described by superimposing exchange and correlation corrections of the Anderson model in the mean f
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::74939ef18212cf8e12e813195f986bc2
https://doi.org/10.1016/0038-1098(92)90332-4
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9
Ab initio investigation of quasi-one-dimensional nano-structures in dilute magnetic semiconductors
Autor: P. H. Dederichs, H. Katayama-Yoshida, K. Sato, Tetsuya Fukushima
Publikováno v: AIP Conference Proceedings.
A new control method of quasi‐one‐dimensional nano‐structures in dilute magnetic semiconductors (DMS) is demonstrated by using ab initio calculations and Monte Carlo simulation of spinodal decomposition under layer‐by‐layer crystal growth c
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d9977c7943006b946da2238764eb0749
https://doi.org/10.1063/1.2730352
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