Abstract
We show that spin system with large and random single-ion anisotropy can be at low energies mapped to a system with random magnetic fields. This is, for example, realized in compound (DTNX) and therefore it represents a long-sought realization of random local (on-site) magnetic fields in antiferromagnetic systems. We support the mapping by numerical study of and effective anisotropic Heisenberg chains and find excellent agreement for static quantities and also for the spin conductivity. Such systems can therefore be used to study the effects of local random magnetic fields on transport properties.
- Received 23 June 2016
- Revised 6 March 2017
DOI:https://doi.org/10.1103/PhysRevB.95.125129
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