Advertisement

Effective Magnetic Hamiltonians

  • V. Drchal
  • J. Kudrnovský
  • I. Turek
Original Paper

Abstract

Based on the first-principles electronic-structure calculations, we construct the effective magnetic Hamiltonians that can be used to search for the ground state of solids and nanostructures. Moreover, using the methods of statistical mechanics, one can study the magnetic properties at T>0 such as the magnetic structure as a function of temperature, magnon spectra, the Curie/Néel temperature, etc. The present approach is highly flexible and it makes possible to study magnetic structure of complex systems with the accuracy of ab initio methods. As an illustration, we show how the magnetic structure of a magnetic monolayer (Fe) on a non-magnetic substrate (Ir(001)) can be determined.

Keywords

Magnetic structure Ab initio Effective Hamiltonian 

Notes

Acknowledgements

The authors thank Czech Science Foundation (Project 202/09/0775) for financial support.

References

  1. 1.
    Liechtenstein, A.I., Katsnelson, M.I., Antropov, V.P., Gubanov, V.A.: Local density functional approach to the theory of exchange interactions in ferromagnetic metals and alloys. J. Magn. Magn. Mater. 67, 65 (1987) ADSCrossRefGoogle Scholar
  2. 2.
    Turek, I., Kudrnovský, J., Drchal, V., Bruno, P.: Exchange interactions, spin waves, and transition temperatures in itinerant magnets. Philos. Mag. 86, 1713 (2006) ADSCrossRefGoogle Scholar
  3. 3.
    Schwarz, K., Mohn, P.: Itinerant metamagnetism in YCo2. J. Phys. F, Met. Phys. 14, L129 (1984) ADSCrossRefGoogle Scholar
  4. 4.
    Dederichs, P.H., Blügel, S., Zeller, R., Akai, H.: Ground states of constrained systems: application to cerium impurities. Phys. Rev. Lett. 53, 2512 (1984) ADSCrossRefGoogle Scholar
  5. 5.
    Udvárdi, L., Szunyogh, L., Palotás, K., Weinberger, P.: First-principles relativistic study of spin waves in thin magnetic films. Phys. Rev. B 68, 104436 (2003) ADSCrossRefGoogle Scholar
  6. 6.
    Martin, V., Meyer, W., Giovanardi, C., Hammer, L., Heinz, K., Tian, Z., Sander, D., Kirschner, J.: Pseudomorphic growth of Fe monolayers on Ir(001)-(1×1): from a fct precursor to a bct film. Phys. Rev. B 76, 205418 (2007) ADSCrossRefGoogle Scholar
  7. 7.
    Kudrnovský, J., Máca, F., Turek, I., Redinger, J.: Substrate-induced antiferromagnetism of a Fe monolayer on the Ir(001) surface. Phys. Rev. B 80, 064405 (2009) ADSCrossRefGoogle Scholar
  8. 8.
    Deák, L., Szunyogh, L., Ujfalussy, B.: Thickness-dependent magnetic structure of ultrathin Fe/Ir(001) films: from spin-spiral states toward ferromagnetic order. Phys. Rev. B 84, 224413 (2011) ADSCrossRefGoogle Scholar
  9. 9.
    Al-Zubi, A., Bihlmayer, G., Blügel, S.: Modeling magnetism of hexagonal Fe monolayers on 4d substrates. Phys. Status Solidi B 248, 2242 (2011) ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  1. 1.Institute of Physics AS CRPraha 8Czech Republic
  2. 2.Dept. of Condensed Matter PhysicsCharles UniversityPraha 2Czech Republic

Personalised recommendations