Skip to main content
SpringerLink
Log in

On structural instabilities in itinerant magnets and superconductors

I. Phase Diagrams

  • Published:
Zeitschrift für Physik B Condensed Matter

Abstract

The influence of a structural distortion on the itinerant antiferromagnetic (IAF) phase and on the superconducting (S) phase is investigated using a free electron band structure for the electron and hole pockets. For equal concentrations of electrons and holes a metastable phase is found in which the lattice distortion coexists with the IAF or S phase. For unequal concentrations of electrons and holes the critical temperature and the value of the order parameter for the IAF or S phase (in the coexistence region) will always be enhanced by the onset of the structural distortion. The theoretical predictions are compared in the IAF case with the occurrence of a spin flip transition in chromium accompanied by a tetragonal distortion, and in the S case with experimental results on A-15 compounds exhibiting a martensitic phase transition.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Mattis, D.C., Langer, W.D.: Phys. Rev. Lett.25, 376 (1970)

    Google Scholar 

  2. Rusinov, A.I., Do Chan Kat, Kopaev, Yu.V.: Sov. Phys. JETP38, 991 (1974)

    Google Scholar 

  3. Brankov, J.G., Tonchev, N.S.: Physica84 A, 534 (1976)

    Google Scholar 

  4. Egri, I.: Solid State Commun.17, 441 (1975)

    Google Scholar 

  5. Egri, I.: Solid State Commun.22, 281 (1977)

    Google Scholar 

  6. Fedders, P.A., Martin, P.C.: Phys. Rev.143, 245 (1966)

    Google Scholar 

  7. Rice, T.M.: Phys. Rev. B2, 3619 (1970)

    Google Scholar 

  8. Entel, P.: Verhandl. DPG (VI) 12, 216 (1977)

    Google Scholar 

  9. Entel, P.: to be published in Int. J. Magn. (1977)

  10. Moyer, C.A., Arajs, S., Hedman, L.: Phys. Rev.14, 1233 (1976)

    Google Scholar 

  11. Entel, P.: to be published in Z. Physik (1978)

  12. Weger, M., Goldberg, I.B. In: Solid State Phys.28, 2 (ed. Ehrenreich et al.) London: Acad. Press 1973

    Google Scholar 

  13. Zittartz, J.: Phys. Rev.164, 575 (1967)

    Google Scholar 

  14. Werner, S.A., Arrott, A., Kendrick, H.: Phys. Rev.155, 528 (1967)

    Google Scholar 

  15. Lee, E.W., Asgar, M.A.: Phys. Rev. Lett.22, 1436 (1969)

    Google Scholar 

  16. Mattheis, L.F.: Phys. Rev. B12, 2196 (1975)

    Google Scholar 

  17. Kim, D.J.: Physica91B, 281 (1977)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Institut für Theoretische Physik, Universität zu Köln, Zülpicher Straße 77, D-5000, Köln 41, Federal Republic of Germany

    P. Entel

Authors
  1. P. Entel
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Entel, P. On structural instabilities in itinerant magnets and superconductors. Z Physik B 28, 191–200 (1977). https://doi.org/10.1007/BF01313041

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01313041

Keywords

Search

Navigation