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| Título: | Exchange interaction and its tuning in magnetic binary chalcogenides |
Autor: | Vergniory, Maia G. CSIC ORCID; Otrokov, M. M. CSIC ORCID; Maznichenko, I. V.; Zubizarreta, X. CSIC; Henk, J.; Mertig, I.; Chulkov, Eugene V. CSIC ORCID; Ernst, Arthur | Fecha de publicación: | 2014 | Editor: | American Physical Society | Citación: | Physical Review B 89(16): 165202 (2014) | Resumen: | Using a first-principles Green's function approach we study magnetic properties of the magnetic binary tetradymite chalcogenides Bi2Se3, Bi2Te3, and Sb2Te3. The magnetic coupling between transition-metal impurities is long range, extends beyond a quintuple layer, and decreases with increasing number of d electrons per 3d atom. We find two main mechanisms for the magnetic interaction in these materials: the indirect exchange interaction mediated by free carriers and the indirect interaction between magnetic moments via chalcogen atoms. The calculated Curie temperatures of these systems are in good agreement with available experimental data. Our results provide deep insight into exchange interactions in magnetic binary tetradymite chalcogenides and open a way to design new materials for promising applications. | Descripción: | Under the terms of the Creative Commons Attribution License 3.0 (CC-BY).-- et al. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevB.89.165202 | URI: | http://hdl.handle.net/10261/136940 | DOI: | 10.1103/PhysRevB.89.165202 | ISSN: | 2469-9950 | E-ISSN: | 2469-9969 |
| Aparece en las colecciones: | (CFM) Artículos |
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| binary chalcogenides.pdf | 788,16 kB | Adobe PDF |  Visualizar/Abrir |
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