Modeling of the Doping Dependent Superconducting Transition Temperatures for Cuprates: Role of Antiferromagnetic Fluctuations

Authors

  • Saleh Hasan Naqib Department of Physics, Rajshahi University

DOI:

https://doi.org/10.3329/jsr.v1i1.1181

Keywords:

Cuprate superconductors, Superconducting Tc, Spin fluctuations, Pseudogap

Abstract

We have calculated the superconducting transition temperature, Tc, of high-Tc cuprates within the strong-coupling Bardeen-Cooper-Schrieffer (BCS) formalism. The hole pairing was attributed to the antiferromagnetic spin fluctuations. Such fluctuations are believed to exist over the whole superconducting hole concentrations, p, extending from the underdoped to the overdoped regimes. A complete consideration of the p-dependences of the antiferromagnetic spin excitation spectral weight, spin fluctuation frequency, Ïsf, and the effect of the pseudogap on the electronic density of states seems to reproduce the experimental Tc(p) satisfactorily over the entire doping range. The possible implications of this finding are discussed in detail.       

Keywords: Cuprate superconductors; Superconducting Tc;  Spin fluctuations; Pseudogap.

 

© 2009 JSR Publications. ISSN: 2070-0237(Print); 2070-0245 (Online). All rights

reserved.

 

DOI: 10.3329/jsr.v1i1.1181

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Author Biography

Saleh Hasan Naqib, Department of Physics, Rajshahi University

Associate Professor

Department of Physics

Rajshahi University

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Published

2008-12-12

How to Cite

Naqib, S. H. (2008). Modeling of the Doping Dependent Superconducting Transition Temperatures for Cuprates: Role of Antiferromagnetic Fluctuations. Journal of Scientific Research, 1(1), 14–21. https://doi.org/10.3329/jsr.v1i1.1181

Issue

Section

Section A: Physical and Mathematical Sciences