Abstract:
An approximate closed system of equations for the correlation functions of a Heisenberg ferromagnet above the critical temperature and in zero magnetic field is obtained. The equations make it possible to express not only the static but also the dynamic characteristics of the spin system in terms of parameters of the microscopic theory. The expression obtained for the spectral density describes in the same approximation the low-frequency diffusion part of the spectrum as well as the high-frequency oscillations that can exist in magnetic systems in the paramagnetic region.
Citation:
Yu. A. Tserkovnikov, “Correlation functions of a Heisenberg ferromagnet in the paramagnetic region”, TMF, 52:1 (1982), 147–160; Theoret. and Math. Phys., 52:1 (1982), 712–721
\Bibitem{Tse82}
\by Yu.~A.~Tserkovnikov
\paper Correlation functions of a~Heisenberg ferromagnet in the paramagnetic region
\jour TMF
\yr 1982
\vol 52
\issue 1
\pages 147--160
\mathnet{http://mi.mathnet.ru/tmf2450}
\transl
\jour Theoret. and Math. Phys.
\yr 1982
\vol 52
\issue 1
\pages 712--721
\crossref{https://doi.org/10.1007/BF01027793}
\isi{https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=Publons&SrcAuth=Publons_CEL&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=A1982PZ63800014}
Linking options:
https://www.mathnet.ru/eng/tmf2450
https://www.mathnet.ru/eng/tmf/v52/i1/p147
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Andrea Di Ciolo, Canio Noce, Adolfo Avella, “A generalized mean-field theory for the t-J model: the single-pole COM solution”, Eur. Phys. J. Spec. Top., 228:3 (2019), 659
Dzebisashvili D.M. Komarov K.K., “London Penetration Depth in the Ensemble of Spin Polarons of Cuprate Superconductors”, Eur. Phys. J. B, 91:11 (2018), 278
Andrea Di Ciolo, Adolfo Avella, “Fermi surface evolution of the 2D Hubbard model within a novel four-pole approximation”, AIP Advances, 8:10 (2018)
Plakida N.M., “Spin fluctuations and high-temperature superconductivity in cuprates”, Physica C, 531 (2016), 39–59
Nikolay M. Plakida, Springer Series in Solid-State Sciences, 171, Strongly Correlated Systems, 2012, 173
A. SHERMAN, “MAGNETIC INCOMMENSURABILITY IN p-TYPE CUPRATE PEROVSKITES”, Int. J. Mod. Phys. B, 26:09 (2012), 1250061
N. M. Plakida, “The two-time Green's function and the diagram technique”, Theoret. and Math. Phys., 168:3 (2011), 1303–1317
Yu. G. Rudoy, “The Bogoliubov–Tyablikov Green's function method in the quantum theory of magnetism”, Theoret. and Math. Phys., 168:3 (2011), 1318–1329
A. A. Vladimirov, D. Ihle, N. M. Plakida, “Dynamic spin susceptibility of superconducting cuprates: A microscopic theory of the magnetic resonance mode”, Phys. Rev. B, 83:2 (2011)
Vladimirov, AA, “Dynamic spin susceptibility in the t-J model”, Physical Review B, 80:10 (2009), 104425
Yu. A. Tserkovnikov, “Equations for two-temperature Green's functions for a Heisenberg
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A. SHERMAN, M. SCHREIBER, “SPIN DYNAMICS IN STRONGLY CORRELATED ELECTRON SYSTEMS”, Int. J. Mod. Phys. B, 21:05 (2007), 669
Sherman, A, “Incommensurate spin dynamics in underdoped cuprate perovskites”, Reviews on Advanced Materials Science, 12:1 (2006), 13
A. A. Vladimirov, D. Ihle, N. M. Plakida, “Dynamical Spin Susceptibility in the t–J Model: The Memory Function Method”, Theoret. and Math. Phys., 145:2 (2005), 1576–1589
R. Chaudhury, “Dynamical Spin Susceptibility in the t–J Model in the Superconducting Phase”, Theoret. and Math. Phys., 136:1 (2003), 1022–1030
Pantic, MR, “Longitudinal dynamical spin susceptibility in Heisenberg ferromagnets”, International Journal of Modern Physics B, 16:31 (2002), 4743
A. Sherman, M. Schreiber, “Rotationally invariant approximation for the two-dimensionalt-Jmodel”, Phys. Rev. B, 65:13 (2002)
N. B. Perkins, N. M. Plakida, “Spin dynamics in the generalized ferromagnetic Kondo model for manganites”, Theoret. and Math. Phys., 120:3 (1999), 1182–1193
G. Dzhakeli, N. M. Plakida, “Dynamic spin susceptibility in the t–J model”, Theoret. and Math. Phys., 114:3 (1998), 335–344
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