Skip to main content
SpringerLink
Log in

Unified model of pseudogap features of conductivity in HTSCs

  • Condensed Matter
  • Published:
Journal of Experimental and Theoretical Physics Letters Aims and scope Submit manuscript

Abstract

The pseudogap phenomenon in underdoped and optimally oxygen-doped high-temperature superconductors (HTSCs) of the Y1Ba2Cu3Ox system is explained from a unified point of view within the model of negative U centers. It is shown that the pseudogap features of conductivity are not related directly to the superconductivity but arise due to the existence of statistical interaction of negative U centers with valence-band holes. Specifically due to this interaction, the hole density in the valence band does not remain constant. It differently changes with temperature for different mutual positions of the Fermi level and the valence band top. These differences lead to different temperature dependences of conductivity for underdoped and optimally doped samples.

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. M. V. Sadovskii, Usp. Fiz. Nauk 171, 539 (2001) [Phys. Usp. 44, 515 (2001)].

    Google Scholar 

  2. L. G. Aslamazov and A. I. Larkin, Phys. Lett. A 26A, 238 (1978).

    ADS  Google Scholar 

  3. I. O. Kulik and A. G. Pedan, Zh. Éksp. Teor. Fiz. 79, 1469 (1980) [Sov. Phys. JETP 52, 742 (1980)].

    ADS  Google Scholar 

  4. K. D. Tséndin and B. P. Popov, Pis’ma Zh. Tekh. Fiz. 24(7), 45 (1998) [Tech. Phys. Lett. 24, 265 (1998)].

    Google Scholar 

  5. K. D. Tsendin and B. P. Popov, Supercond. Sci. Technol. 12, 255 (1999).

    Article  ADS  Google Scholar 

  6. N. F. Mott and E. A. Davis, Electron Processes in Non-Crystalline Materials (Clarendon Press, Oxford, 1974; Mir, Moscow, 1979).

    Google Scholar 

  7. D. D. Prokof’ev, M. P. Volkov, and Yu. A. Boikov, Fiz. Tverd. Tela (St. Petersburg) 45, 1168 (2003) [Phys. Solid State 45, 1223 (2003)].

    Google Scholar 

  8. D. Adler and E. F. Yoffa, Phys. Rev. Lett. 36, 1197 (1976).

    Article  ADS  Google Scholar 

  9. P. W. Anderson, Phys. Rev. 109, 1492 (1975).

    ADS  Google Scholar 

  10. K. D. Tsendin and D. V. Denisov, Supercond. Sci. Technol. 16, 80 (2003).

    Article  ADS  Google Scholar 

  11. S. Tanaka, S. Uchida, H. Takagi, et al., Int. J. Mod. Phys. B 1, 755 (1987).

    ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021, Russia

    K. D. Tséndin & D. V. Denisov

  2. St. Petersburg State Technical University, Politekhnicheskaya ul. 29, St. Petersburg, 195251, Russia

    B. P. Popov

Authors
  1. K. D. Tséndin
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. D. V. Denisov
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. B. P. Popov
    View author publications

    You can also search for this author in PubMed Google Scholar

Additional information

__________

Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 80, No. 4, 2004, pp. 277–283.

Original Russian Text Copyright © 2004 by Tséndin, Denisov, Popov.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Tséndin, K.D., Denisov, D.V. & Popov, B.P. Unified model of pseudogap features of conductivity in HTSCs. Jetp Lett. 80, 246–252 (2004). https://doi.org/10.1134/1.1813680

Download citation

  • Received:

  • Accepted:

  • Issue Date:

  • DOI: https://doi.org/10.1134/1.1813680

PACS numbers

Search

Navigation