Skip to main content
SpringerLink
Log in

Anomalous Change in the Size of a Spin Polaron in the Paramagnetic Temperature Range in La1.2Sr1.8Mn2O7

  • Published:
Physics of the Solid State Aims and scope Submit manuscript

Abstract

This study continues investigation of the magnetic and electrical properties of double perovskite La1.2Sr1.8Mn2O7, which has a colossal magnetoresistance (above 1200) near the Curie temperature. It is shown that the colossal magnetoresistance observed in La1.2Sr1.8Mn2O7 is adequately described based on the “orientational” and “spin-polaron” conduction mechanisms. It is found that, in the absence of a magnetic field, the linear size of a spin polaron decreases with an increase in temperature in the ferromagnetic region, whereas during the transition of manganite to the paramagnetic state the linear size begins to increase, with a maximum at 180 K. At temperatures above 180 K, the anomalous temperature change in the size of a spin polaron disappears. In the absence of a magnetic field, the detected peak in the temperature dependence of the spin-polaron size is maximum; the peak height decreases after applying a magnetic field. Mechanisms are proposed to explain this anomalous temperature behavior of the spin-polaron size.

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

Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.

Similar content being viewed by others

REFERENCES

  1. E. L. Nagaev, Phys. Usp. 39, 781 (1996).

    Article  ADS  Google Scholar 

  2. Y. Tokura and Y. Tomioko, J. Magn. Magn. Mater. 200, 1 (1999).

    Article  ADS  Google Scholar 

  3. Y. Coey, M. Viret, and S. von Molnor, Adv. Phys. 48, 167 (1999).

    Article  ADS  Google Scholar 

  4. E. Dagotto, Nanoscale Phase Separation and Colossal Magnetoresistance (Springer, Berlin, 2002), p. 452.

    Google Scholar 

  5. M. B. Salamon and M. Jaime, Rev. Mod. Phys. 73, 583 (2001).

    Article  ADS  Google Scholar 

  6. R. von Helmholtz, J. Wecker, B. Holzapfel, L. Schultz, and K. Samwer, Phys. Rev. Lett. 71, 2331 (1993).

    Article  ADS  Google Scholar 

  7. S. Jin, T. H. Tiefel, M. McCormack, R. A. Fastnacht, R. Ramesh, and L. M. Chen, Science (Washington, DC, U. S.) 264, 413 (1994).

    Article  ADS  Google Scholar 

  8. A. L. Rakhmanov, K. I. Kugel’, Ya. M. Blanter, and M. Yu. Kagan, Phys. Rev. B 63, 174424 (2001).

    Article  ADS  Google Scholar 

  9. K. I. Kugel’, A. L. Rakhmanov, A. O. Sboichakov, M. Yu. Kagan, I. V. Brodskii, and A. V. Klaptsov, J. Exp. Theor. Phys. 98, 572 (2004).

    Article  ADS  Google Scholar 

  10. M. I. Kurkin, E. A. Neifeld, A. V. Korolev, N. A. Ugryumova, S. A. Gudin, and N. N. Gapontseva, J. Exp. Theor. Phys. 128, 823 (2013).

    Article  ADS  Google Scholar 

  11. S. A. Gudin, N. I. Solin, and N. N. Gapontseva, Phys. Solid State 60, 1078 (2018).

    Article  ADS  Google Scholar 

  12. M. Zabel, J. Phys.: Condens Matter. 11, 9303 (1999).

    ADS  Google Scholar 

  13. D. T. Pierce, J. Unguris, R. J. Celotta, and M. D. Stiles, J. Magn. Magn. Mater. 200, 290 (1999).

    Article  ADS  Google Scholar 

  14. M. I. Kurkin, E. A. Neifel’d, A. V. Korolev, N. A. Ugryumova, S. A. Gudin, and N. N. Gapontseva, J. Exp. Theor. Phys. 116, 823 (2013).

    Article  ADS  Google Scholar 

  15. S. A. Gudin, M. I. Kurkin, E. A. Neifel’d, A. V. Korolev, N. A. Ugryumova, and N. N. Gapontseva, J. Exp. Theor. Phys. 121, 878 (2015).

    Article  ADS  Google Scholar 

  16. M. Yu. Kagan and K. I. Kugel’, Phys. Usp. 44, 553 (2001).

    Article  ADS  Google Scholar 

  17. S. A. Gudin, N. N. Gapontseva, E. A. Neifel’d, A. V. Korolev, and N. A. Ugryumova, Bull. Russ. Acad. Sci.: Phys. 78, 900 (2014).

    Article  Google Scholar 

  18. S. A. Gudin and N. I. Solin, J. Exp. Theor. Phys. 130, 543 (2020).

    Article  ADS  Google Scholar 

  19. S. A. Gudin and N. I. Solin, Phys. Solid State 62, 756 (2020).

    Article  ADS  Google Scholar 

Download references

ACKNOWLEDGMENTS

I am grateful to K.I. Kugel’ and N.I. Solin for helpful discussions of the results and valuable remarks.

Funding

This study was performed within the state contract “Kvant” with the Ministry of Science and Higher Education of the Russian Federation (no. AAAA-A18-118020190095) and supported in part by the Russian Foundation for Basic Research (project no. 19-02-01000).

Author information

Authors and Affiliations

  1. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620219, Yekaterinburg, Russia

    S. A. Gudin

Authors
  1. S. A. Gudin
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to S. A. Gudin.

Additional information

Translated by A. Sin’kov

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Gudin, S.A. Anomalous Change in the Size of a Spin Polaron in the Paramagnetic Temperature Range in La1.2Sr1.8Mn2O7. Phys. Solid State 64, 6–10 (2022). https://doi.org/10.1134/S1063783422010085

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S1063783422010085

Keywords:

Search

Navigation