12 citations · 12 across the 1 of their papers we have counts for
3 papers
cond-mat.str-el2019★ 12 cited
Elementary excitations in the ordered phase of spin-1/2 J1-J2 model on square lattice
A. V. Syromyatnikov, A. Yu. Aktersky
We use recently proposed four-spin bond-operator technique (BOT) to discuss spectral properties of frustrated spin- -- Heisenberg antiferromagnet on square latti…
cond-mat.str-el2016
Low-energy singlet sector in spin- -- Heisenberg model on square lattice
A. Yu. Aktersky, A. V. Syromyatnikov
Based on a special variant of plaquette expansion, an operator is constructed whose eigenvalues give the low-energy singlet spectrum of spin- Heisenberg antiferromagnet on…
cond-mat.str-el2015
Low-energy singlet excitations in spin- 1/2 Heisenberg antiferromagnet on square lattice
A. Yu. Aktersky, A. V. Syromyatnikov
We present an approach based on a dimer expansion which describes low-energy singlet excitations (singlons) in spin- Heisenberg antiferromagnet on simple square lattice. A…