Monopole Field Textures in Interacting Spin Systems
- URL: http://arxiv.org/abs/2003.08714v2
- Date: Fri, 29 May 2020 14:54:55 GMT
- Title: Monopole Field Textures in Interacting Spin Systems
- Authors: Andreas Eriksson, Erik Sj\"oqvist
- Abstract summary: Magnetic monopoles can appear as emergent structures in a wide range of physical settings.
Spin-spin interaction provides a mechanism for splitting the synthetic local magnetic charges.
For certain states, a nonzero net charge can be created in an arbitrarily large finite region of parameter space.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Magnetic monopoles can appear as emergent structures in a wide range of
physical settings, ranging from spin ice to Weyl points in semimetals. Here, a
distribution of synthetic (Berry) monopoles in parameter space of a slowly
changing external magnetic field is demonstrated in a system of interacting
spin-$\frac{1}{2}$ particles with broken spherical symmetry. These monopoles
can be found at points where the external field is nonzero. The spin-spin
interaction provides a mechanism for splitting the synthetic local magnetic
charges until their magnitude reach the smallest allowed value $\frac{1}{2}$.
For certain states, a nonzero net charge can be created in an arbitrarily large
finite region of parameter space. The monopole field textures contain
non-monopolar contributions in the presence of spin-spin interaction.
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