A network model for field and quenched disorder effects in artificial spin ice
arXiv:1112.2069 · doi:10.1088/1367-2630/14/4/045008
Abstract
We have performed a systematic study of the effects of field strength and quenched disorder on the driven dynamics of square artificial spin ice. We construct a network representation of the configurational phase space, where nodes represent the microscopic configurations and a directed link between node i and node j means that the field may induce a transition between the corresponding configurations. In this way, we are able to quantitatively describe how the field and the disorder affect the connectedness of states and the reversibility of dynamics. In particular, we have shown that for optimal field strengths, a substantial fraction of all states can be accessed using external driving fields, and this fraction is increased by disorder. We discuss how this relates to control and potential information storage applications for artificial spin ices.
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Cited by in corpus (6)
- Disorder strength and field-driven ground state domain formation in artificial spin ice: experiment, simulation and theory
- Reconfigurable magnonic mode-hybridisation and spectral control in a bicomponent artificial spin ice
- Nambu monopoles interacting with lattice defects in two-dimensional artificial square spin ice
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- Comparison of Spin-Wave Modes in Connected and Disconnected Artificial Spin Ice Nanostructures Using Brillouin Light Scattering Spectroscopy
- Attaining the Ground State of Kagome Artificial Spin Ice via Ultrafast Site-Specific Laser Annealing