Dynamical properties of S=1 bond-alternating Heisenberg chains in transverse magnetic fields

Abstract

We calculate dynamical structure factors of the S=1 bond-alternating Heisenberg chain with a single-ion anisotropy in transverse magnetic fields, using a continued fraction method based on the Lanczos algorithm. In the Haldane-gap phase and the dimer phase, dynamical structure factors show characteristic field dependence. Possible interpretations are discussed. The numerical results are in qualitative agreement with recent results for inelastic neutron-scattering experiments on the S=1 bond-alternating Heisenberg-chain compound $\mathrm{Ni}({\mathrm{C}}_9{\mathrm{D}}_{24}{\mathrm{N}}_4)(\mathrm{N}{\mathrm{O}}_2)\mathrm{Cl}{\mathrm{O}}_4$ and the S=1 Haldane-gap compound $\mathrm{Ni}({\mathrm{C}}_5{\mathrm{D}}_{14}{\mathrm{N}}_2{)}_2{\mathrm{N}}_3(\mathrm{P}{\mathrm{F}}_6)$ in transverse magnetic fields.

arXiv comment7 pages, 6 figures

References in corpus (8)

• Experimental Verification of the Gapless Point in the $S$=1 Antiferromagnetic Bond Alternating Chain
• Excitation Spectrum of $S=1$ Antiferromagnetic Chains
• Haldane-gap excitations in the low-H_c 1-dimensional quantum antiferromagnet NDMAP
• Evidence for the singlet-dimer ground state in an S = 1 antiferromag netic bond alternating chain
• Massive triplet excitations in a magnetized anisotropic Haldane spin chain
• Low-temperature properties of the spin-1 antiferromagnetic Heisenberg chain with bond-alternation
• Distribution of exchange energy in a bond-alternating S=1 quantum spin chain
• Dynamical structure factors of S=1 bond-alternating Heisenberg chains

Cited by in corpus (6)

• "Quasi-particle breakdown" in the quasi-one-dimensional Ising ferromagnet CoNb${}_2$O${}_6$
• Phase Diagrams, Distinct Conformal Anomalies and Thermodynamics of Spin-1 Bond-Alternating Heisenberg Antiferromagnetic Chain in Magnetic Fields
• Low-energy excitations in the magnetized state of the bond-alternating quantum S=1 chain system NTENP
• Single-ion anisotropy in Haldane chains and form factor of the O(3) nonlinear sigma model
• Field theory analysis of S=1 antiferromagnetic bond-alternating chains in the dimer phase
• Electron spin resonance shifts in S=1 antiferromagnetic chains