3 papers
cond-mat.str-el2026
Field-induced transitions from incommensurate to commensurate phases in helical antiferromagnets
P. T. Bolokhova, A. V. Syromyatnikov
Heisenberg antiferromagnet with an easy-plane anisotropy is discussed in which a magnetic spiral is induced by Dzyaloshinskii-Moriya interaction and/or frustration of the exchange…
cond-mat.str-el2026
Bond-operator analytical approach for the - model
A. V. Syromyatnikov
We present a bond-operator theory (BOT) for analytical consideration of the - model and its extensions with longer-rage hopping terms. This technique is based on previously s…
cond-mat.str-el2026
Elementary excitations in undoped layered cuprates
A. V. Syromyatnikov
Using the recently proposed bond-operator technique (BOT), we discuss spin dynamics of the Heisenberg spin- antiferromagnet with the ring exchange and small interactions b…