Electronic Structure and X-Ray Magnetic Circular Dichroism in Sm-Doped Bi₂Se₃

• Authors: V. Antonov , L. Bekenov , S. Uba , A. Ernst
• Languages of publication: EN

Abstracts

EN

We studied the structural, electronic, and magnetic properties of Sm-doped Bi₂Se₃ using a GGA approximation in a frame of the fully relativistic spin-polarized Dirac linear muffin-tin orbital band-structure method. The X-ray absorption spectra (XAS) and X-ray magnetic circular dichroism at the Sm M_{4,5} edges were investigated theoretically from first principles. The calculated results are in good agreement with experimental data. The complex fine structure of the Sm M_{4,5} XAS in Sm-doped Bi₂Se₃ was found to be not compatible with a pure Sm³⁺ valency state. The interpretation demands mixed valent states.

Keywords

EN

75.50.Cc; 71.20.Lp; 71.15.Rf

Discipline

• 75.50.Cc: Other ferromagnetic metals and alloys
• 71.20.Lp: Intermetallic compounds
• 71.15.Rf: Relativistic effects[see also 31.30.J- Relativistic and quantum electrodynamic (QED) effects in atoms, molecules, and ions]

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2018
• Volume: 133
• Issue: 3
• Pages: 453-455

Dates

published

2018-03

Contributors

author

V. Antonov

• G.V. Kurdyumov Institute for Metal Physics of the N.A.S. of Ukraine, 36 Vernadsky Street, 03142 Kiev, Ukraine
• Faculty of Mathematics and Informatics, University of Bialystok, K. Ciolkowskiego 1M, PL-15-245 Bialystok, Poland

author

L. Bekenov

• G.V. Kurdyumov Institute for Metal Physics of the N.A.S. of Ukraine, 36 Vernadsky Street, 03142 Kiev, Ukraine

author

S. Uba

• Faculty of Mathematics and Informatics, University of Bialystok, K. Ciolkowskiego 1M, PL-15-245 Bialystok, Poland

author

A. Ernst

• Max-Planck Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle
• Institut für Theoretische Physik, Johannes Kepler Universität, A 4040 Linz, Austria

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Identifiers

DOI

10.12693/APhysPolA.133.453