|Publisher DOI:||10.1103/PhysRevB.86.184418||Title:||Search for stable ferromagnets among AIV/Fe digital alloys (AIV= Si, Ge) using first-principles calculations||Language:||English (United States)||Authors:||Otrokov, M. M.
Chulkov, E. V.
|Issue Date:||15-Nov-2012||Publisher:||American Physical Society||Journal or Series Name:||Physical Review B - Condensed Matter and Materials Physics||Volume:||86||Issue:||18||Abstract:||
Using first-principles electronic structure calculations we investigate the existence of stable ferromagnets among the AIV/Fe digital alloys (AIV=Si,Ge), modeled as periodic sequence of Fe monolayers in the AIV host. Total-energy calculations and the magnetic force theorem are exploited for accurate determination of the magnetic ordering. To estimate the critical temperatures, Monte Carlo simulations are employed, while the renormalization-group analytical expressions are applied to assess the impact of the interlayer exchange on the critical temperature values. According to our results, among the systems under consideration only the Ge-based alloys feature a stable ferromagnetic ordering at nonzero temperature. The critical temperatures of these systems were found to be strongly dependent on the underlying crystal structure. © 2012 American Physical Society.
|URI:||https://reposit.haw-hamburg.de/handle/20.500.12738/10865||ISSN:||1538-4489||Institute:||Fakultät Technik und Informatik
Department Informations- und Elektrotechnik
|Appears in Collections:||Publications without full text|
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