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Spin-wave condensation and quantum melting of long-range antiferromagnetic order in t-J model

O. P. Sushkov
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Abstract

Ground state wave function of two-dimensional t-J model is found at doping close to half filling. It is shown that the condensation of Cooper pairs (superconducting pairing of mobile holes) and the condensation of spin-waves into spin-liquid state are closely connected. The effective spectrum of $S=1$ excitations, spin-wave gap pseudo-gap $Δ_M$, magnetic correlation length $ξ_M$, and static magnetic formfactor $S_M(\bf q)$ are calculated.

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O. P. Sushkov. 1995-09-04. Spin-wave condensation and quantum melting of long-range antiferromagnetic order in t-J model. https://doi.org/10.1103/physrevb.54.9988

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