Spectral signatures of magnetic Bloch oscillations in one-dimensional easy-axis ferromagnets

Abstract

Domain walls in a one-dimensional gapped easy-axis ferromagnet can exhibit Bloch oscillations in an applied magnetic field. We investigate how exchange couplings modify this behavior within an approximation based on noninteracting domain-wall bound states. In particular, we obtain analytical results for the spectrum and the dynamic structure factor, and show where in momentum space to expect equidistant energy levels, the Wannier-Zeeman ladder, which is the spectral signature of magnetic Bloch oscillations. We compare our results to previous calculations employing a single domain-wall approximation, and make predictions relevant for the material $CoCl2\cdot 2H2O$.

12 pages, 14 figures

References in corpus (2)

• Quantum criticality in an Ising chain: experimental evidence for emergent E8 symmetry
• Quantum Spinon Oscillations

Cited by in corpus (4)

• Nonlinear spectroscopy of bound states in perturbed Ising spin chains
• Magnetic Bloch oscillations in a non-Hermitian quantum Ising chain
• Two-doublon Bloch oscillations in the mass-imbalanced extended Fermi-Hubbard model
• Dynamical structure factor of magnetic Bloch oscillations at finite temperatures