168 citations · 2.1k across the 57 of their papers we have counts for
4 papers · 1 filter
Magnon decay in gapped quantum spin systems
Alexei Kolezhuk, Subir Sachdev
In the O(3) sigma-model description of gapped spin systems, S=1 magnons can only decay into three lower energy magnons. We argue that the symmetry of the quantum spin Hamiltonian o…
Field-induced chiral phase in isotropic frustrated spin chains
Alexei Kolezhuk, Temo Vekua
It is shown that an external magnetic field applied to a spin-S isotropic zigzag chain induces a phase with spontaneously broken parity, characterized by long range ordering of vec…
Electron Spin Resonance in sine-Gordon spin chains in the perturbative spinon regime
S. A. Zvyagin, A. K. Kolezhuk, J. Krzystek +1
We report the low-temperature multi-frequency ESR studies of copper pyrimidine dinitrate, a spin-1/2 antiferromagnetic chain with alternating -tensor and the Dzyaloshinskii-Mori…
One-Dimensional Magnetism
H. -J. Mikeska, A. K. Kolezhuk
This paper has been withdrawn.