Spin-wave spectrum in La2CuO4 -- double occupancy and competing interaction effects
Avinash Singh, Pallab Goswami
TL;DR
This paper investigates the spin-wave energy dispersion in La2CuO4, focusing on how double occupancy and competing interactions within the $t-t'$ Hubbard model influence the observed phenomena.
Contribution
It provides a theoretical analysis linking the spin-wave dispersion to double occupancy and competing interactions in the Hubbard model.
Findings
Double occupancy affects the spin-wave spectrum.
Competing interactions modify the dispersion along the AF zone boundary.
The $t-t'$ Hubbard model explains experimental observations.
Abstract
The recently observed spin-wave energy dispersion along the AF zone boundary in La2CuO4 is discussed in terms of double occupancy and competing interaction effects in the Hubbard model on a square lattice.
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