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Graded spin-wave theory of the t-J model

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Abstract

A graded Holstein-Primakoff realization of the SU(2/1) algebra is proposed. A spin-wave theory with the condition that the sublattice magnetization is zero is discussed. A longrange spiral (incommensurate) phase is obtained at small doping and at T=0. The spin-spin correlator is calculated.

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Authors
  1. N. I. Karchev
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Additional information

In Memory of Prof. M. C. Polivanov

Department of Physics, University of Sofia, Bulgaria. Published in Teoreticheskaya i Matematicheskaya Fizika, Vol. 92, No. 3, pp. 415–424, September, 1992.

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Karchev, N.I. Graded spin-wave theory of the t-J model. Theor Math Phys 92, 988–996 (1992). https://doi.org/10.1007/BF01017076

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  • DOI: https://doi.org/10.1007/BF01017076

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