Exchange interaction and its tuning in magnetic binary chalcogenides

M.G. Vergniory; M.M. Otrokov; Danny Thonig; Martin Hoffmann; I.V. Maznichenko; R. Matthias Geilhufe; X. Zubizarreta; S. Ostanin; Alberto Marmodoro; J. Henk; Wolfram Hergert; I. Mertig; Evgueni V. Chulkov; Arthur Ernst

doi:10.1103/PhysRevB.89.165202

Exchange interaction and its tuning in magnetic binary chalcogenides

M.G. Vergniory, M.M. Otrokov, Danny Thonig, Martin Hoffmann, I.V. Maznichenko, R. Matthias Geilhufe, X. Zubizarreta, S. Ostanin, Alberto Marmodoro, J. Henk, Wolfram Hergert, I. Mertig, Evgueni V. Chulkov, Arthur Ernst

Department of Many Particle Systems

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Article number	165202
Pages (from-to)	165202
Number of pages	7
Journal	Physical Review B: Condensed Matter and Materials Physics
Volume	89
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.89.165202
Publication status	Published - Apr 2014

Fields of science

103 Physics, Astronomy

JKU Focus areas

Digital Transformation

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10.1103/PhysRevB.89.165202

Cite this

Vergniory, M. G., Otrokov, M. M., Thonig, D., Hoffmann, M., Maznichenko, I. V., Geilhufe, R. M., Zubizarreta, X., Ostanin, S., Marmodoro, A., Henk, J., Hergert, W., Mertig, I., Chulkov, E. V., & Ernst, A. (2014). Exchange interaction and its tuning in magnetic binary chalcogenides. Physical Review B: Condensed Matter and Materials Physics, 89(16), 165202. Article 165202. https://doi.org/10.1103/PhysRevB.89.165202

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title = "Exchange interaction and its tuning in magnetic binary chalcogenides",

abstract = "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.",

author = "M.G. Vergniory and M.M. Otrokov and Danny Thonig and Martin Hoffmann and I.V. Maznichenko and Geilhufe, {R. Matthias} and X. Zubizarreta and S. Ostanin and Alberto Marmodoro and J. Henk and Wolfram Hergert and I. Mertig and Chulkov, {Evgueni V.} and Arthur Ernst",

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Vergniory, MG, Otrokov, MM, Thonig, D, Hoffmann, M, Maznichenko, IV, Geilhufe, RM, Zubizarreta, X, Ostanin, S, Marmodoro, A, Henk, J, Hergert, W, Mertig, I, Chulkov, EV & Ernst, A 2014, 'Exchange interaction and its tuning in magnetic binary chalcogenides', Physical Review B: Condensed Matter and Materials Physics, vol. 89, no. 16, 165202, pp. 165202. https://doi.org/10.1103/PhysRevB.89.165202

TY - JOUR

T1 - Exchange interaction and its tuning in magnetic binary chalcogenides

AU - Vergniory, M.G.

AU - Otrokov, M.M.

AU - Thonig, Danny

AU - Hoffmann, Martin

AU - Maznichenko, I.V.

AU - Geilhufe, R. Matthias

AU - Zubizarreta, X.

AU - Ostanin, S.

AU - Marmodoro, Alberto

AU - Henk, J.

AU - Hergert, Wolfram

AU - Mertig, I.

AU - Chulkov, Evgueni V.

AU - Ernst, Arthur

PY - 2014/4

Y1 - 2014/4

N2 - 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.

AB - 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.

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DO - 10.1103/PhysRevB.89.165202

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