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2007 | 111 | 5 | 721-725
Article title

Influence of Electronic Structure on the Phase Diagram of Weakly Doped Superconducting Cuprates

Content
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Languages of publication
EN
Abstracts
EN
Motivated by the difference between the experimental phase diagram of cuprates and expectations of the t-J model, we analyze the influence of the electronic structure on superconducting state generation for small levels of doping. Following some theoretical studies of the Fermi surface for hole doped superconducting cuprates we base our calculations on the t-t'-t''-J model. We construct the spin polaron model, which is an effective model for the t-J model, and we expand it by adding the new terms related to the next neighbor hopping integrals t' and t''. In the framework of this model we study evolutions of superconducting correlation functions with doping. As a result of numerical calculations we find out that superconducting state vanishes for small levels of doping and finite values of t' and t''. This is in qualitative agreement with experimental results.
Keywords
EN
Publisher

Year
Volume
111
Issue
5
Pages
721-725
Physical description
Dates
published
2007-05
Contributors
author
  • Institute for Low Temperature and Structure Research, P.O. Box 1410, 50-950 Wrocław 2, Poland
author
  • Institute for Low Temperature and Structure Research, P.O. Box 1410, 50-950 Wrocław 2, Poland
References
  • 1. S. Sorella, G.B. Martins, F. Becca, C. Gazza, L. Capriotti, A. Parola, E. Dagotto, Phys. Rev. Lett., 88, 117002, 02
  • 2. P. Wróbel, R. Eder, R. Micnas, J. Phys., Condens. Matter, 15, 2775, 03
  • 3. A. Damascelli, Z.X. Shen, Z. Hussain, Rep. Math. Phys., 75, 473, 03
  • 4. T. Tohyama, S. Maekawa, Supercond. Sci. Techn., 13, R17, 00
  • 5. K.A. Chao, J. Spalek, A.M. Oleś, Phys. Rev. B, 18, 3453, 87
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv111n508kz
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