Quasi-elastic neutron scattering in the high-field phase of a Haldane antiferromagnet

Abstract

Inelastic neutron scattering experiments on the Haldane-gap quantum antiferromagnet NDMAP are performed in magnetic fields below and above the critical field Hc at which the gap closes. Quasi-elastic neutron scattering is found for H>Hc indicating topological excitations in the high field phase.

Added to discussion section. v2: Updated figures

References in corpus (1)

• Field-induced commensurate long-range order in the Haldane-gap system NDMAZ

Cited by in corpus (20)

• Bose-Einstein Condensation in Magnetic Insulators
• One-Dimensional Quantum Liquids: Beyond the Luttinger Liquid Paradigm
• Unusual ordered phases of highly frustrated magnets: a review
• Dynamics of composite Haldane spin chains in IPA-CuCl3
• Direct Observation of Magnon Fractionalization in the Quantum Spin Ladder
• Massive triplet excitations in a magnetized anisotropic Haldane spin chain
• High-field phase diagram of the Haldane-gap antiferromagnet $Ni(C_5{H}_{14}{N}_2{)}_2{N}_3(P{F}_6)$
• Dynamics of an anisotropic Haldane antiferromagnet in strong magnetic field
• Effects of an external magnetic field on the gaps and quantum corrections in an ordered Heisenberg antiferromagnet with Dzyaloshinskii-Moriya anisotropy
• Zeeman levels with exotic field dependence in the high field phase of a S=1 Heisenberg antiferromagnetic chain
• Crystals for neutron scattering studies of quantum magnetism
• Haldane-gap chains in a magnetic field
• Distribution of exchange energy in a bond-alternating S=1 quantum spin chain
• Magnetic properties of the Haldane-gap material NENB
• Spin anisotropy effects in dimer single molecule magnets
• Low-energy excitations in the magnetized state of the bond-alternating quantum S=1 chain system NTENP
• Bose glass behavior in (Yb${}_{1-x}$Lu${}_x$)${}_4$As${}_3$ representing the randomly diluted quantum spin-1/2 chains
• Half-ordered state in the anisotropic Haldane-gap antiferromagnet NDMAP
• Bosonic representation of spin operators in the field-induced critical phase of spin-1 Haldane chains
• Long-time divergences in the nonlinear response of gapped one-dimensional many-particle systems