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TMF, 2003, Volume 136, Number 1, Pages 148–157 (Mi tmf207)  

This article is cited in 2 scientific papers (total in 2 papers)

Dynamical Spin Susceptibility in the $t$$J$ Model in the Superconducting Phase

R. Chaudhury

S. N. Bose National Centre for Basic Sciences

Abstract: Dynamical spin susceptibility is calculated for the $t$$J$ model in the superconducting phase using the memory function method in terms of the Hubbard operators. The self-consistent system of equations for the memory function is obtained within the mode-coupling approximation. Both itinerant hole excitations and localized spin fluctuations contribute to the memory function. Moreover, the itinerant contribution itself consists of two parts, i.e., the contribution of Bogoliubov quasiparticles and that of Cooper pairs. The spin dynamics is diffusive in the hydrodynamic limit, but the itinerant part does not contribute to the spin diffusion. In the high frequency region, spin-wave-like excitations continue to exist. We discuss our analytic results in the light of neutron scattering experiments performed on the cuprate superconductors.

Keywords: spin susceptibility, strong electron correlations, $t$$J$ model, high-$T_c$ superconductivity

DOI: https://doi.org/10.4213/tmf207

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English version:
Theoretical and Mathematical Physics, 2003, 136:1, 1022–1030

Bibliographic databases:

Received: 30.05.2002

Citation: R. Chaudhury, “Dynamical Spin Susceptibility in the $t$$J$ Model in the Superconducting Phase”, TMF, 136:1 (2003), 148–157; Theoret. and Math. Phys., 136:1 (2003), 1022–1030

Citation in format AMSBIB
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\by R.~Chaudhury
\paper Dynamical Spin Susceptibility in the $t$--$J$ Model in the Superconducting Phase
\jour TMF
\yr 2003
\vol 136
\issue 1
\pages 148--157
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\crossref{https://doi.org/10.4213/tmf207}
\zmath{https://zbmath.org/?q=an:1178.82084}
\transl
\jour Theoret. and Math. Phys.
\yr 2003
\vol 136
\issue 1
\pages 1022--1030
\crossref{https://doi.org/10.1023/A:1024553723685}
\isi{http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&DestLinkType=FullRecord&DestApp=ALL_WOS&KeyUT=000184767700009}


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    Citing articles on Google Scholar: Russian citations, English citations
    Related articles on Google Scholar: Russian articles, English articles

    This publication is cited in the following articles:
    1. Chaudhury, R, “Studies of the spin diffusion coefficient and the spin stiffness constant for the t-J model on low-dimensional lattices and possible application to doped antiferromagnets”, Journal of Physics-Condensed Matter, 19:49 (2007), 496203  crossref  isi  scopus  scopus
    2. Bhattacharjee S., Chaudhury R., “Calculation of generalized spin stiffness constant of strongly correlated doped quantum antiferromagnet on two-dimensional lattice and it?s application to effective exchange constant for semi-itinerant systems”, Physica B, 500 (2016), 133–141  crossref  isi  elib  scopus
  • Теоретическая и математическая физика Theoretical and Mathematical Physics
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