Skip to main content
SpringerLink
Log in

Magnetic-field-induced valence transition in rare-earth systems

  • Strongly Correlated Electron Systems
  • Published:
Pramana Aims and scope Submit manuscript

Abstract

The magnetic-field-induced valence transition in rare-earth systems has been investigated using the periodic Anderson model supplemented by the Falicov-Kimball term. This model has been solved by first decoupling the Falicov-Kimball term as proposed by Khomskii and Koharjan and then taking the limit of infinite intra-site Coulomb repulsion. The valence transition both in the absence and in the presence of magnetic field as a function of temperature is studied. It has been found that the system makes transition from non-magnetic to magnetic state when the magnetic field increases beyond a critical value H c. The phase boundary defined in terms of reduced field H c(T)/H c(0) and reduced temperature T/T v (T v being the valence transition temperature in the absence of field) is almost independent of the position of the localized level. The results are in qualitative agreement with experimental observations in Yb- and Eu-compounds.

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. Kiyohiro Sugiyama et al, J. Phys. Soc. Japan 57, 3946 (1988)

    Article  ADS  Google Scholar 

  2. H Wada et al, J. Phys.: Condens. Matter 9, 7913 (1997)

    Article  ADS  Google Scholar 

  3. H A Katori, T Goto and Yoshimura, J. Magn. Magn. Mater. 140–144, 1245 (1995)

    Google Scholar 

  4. A Mitsuda et al, J. Magn. Magn. Mater. 196–197, 883 (1999)

    Article  Google Scholar 

  5. A Chattopadhaya and S K Ghatak, J. Magn. Magn. Mater. 208, 131 (2000)

    Article  ADS  Google Scholar 

  6. Tetsuro Saso and Masatoshi Itoh, Phys. Rev. B53, 6877 (1996)

    ADS  Google Scholar 

  7. D Meyer and W Nolting, to be published

  8. Goncalves da Silva and L M Falicov, Solid State Commun. 17, 1521 (1975)

    Article  Google Scholar 

  9. G Gangadhar Reddy and A Ramakanth, J. Phys. Chem. Solids 51, 515 (1990)

    Article  Google Scholar 

  10. D I Khomskii and A N Koharjan, Solid State Commun. 18, 985 (1976)

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Physics, Kakatiya University, 506 009, Warangal, India

    G Gangadhar Reddy & A Ramakanth

  2. Department of Physics, Indian Institute of Technology, 721 302, Kharagpur, India

    S K Ghatak

Authors
  1. G Gangadhar Reddy
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. A Ramakanth
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. S K Ghatak
    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

Reddy, G.G., Ramakanth, A. & Ghatak, S.K. Magnetic-field-induced valence transition in rare-earth systems. Pramana - J Phys 58, 773–776 (2002). https://doi.org/10.1007/s12043-002-0169-2

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12043-002-0169-2

Keywords

PACS No.

Search

Navigation