Competing interactions in artificial spin chains
arXiv:1706.05485 · doi:10.1103/PhysRevB.96.014402
Abstract
The low-energy magnetic configurations of artificial frustrated spin chains are investigated using magnetic force microscopy and micromagnetic simulations. Contrary to most studies on two-dimensional artificial spin systems where frustration arises from the lattice geometry, here magnetic frustration originates from competing interactions between neighboring spins. By tuning continuously the strength and sign of these interactions, we show that different magnetic phases can be stabilized. Comparison between our experimental findings and predictions from the one-dimensional Anisotropic Next-Nearest-Neighbor Ising (ANNNI) model reveals that artificial frustrated spin chains have a richer phase diagram than initially expected. Besides the observation of several magnetic orders and the potential extension of this work to highly-degenerated artificial spin chains, our results suggest that the micromagnetic nature of the individual magnetic elements allows observation of metastable spin configurations.
5 pages, 4 figures
References in corpus (18)
- Artificial "spin ice" in a geometrically frustrated lattice of nanoscale ferromagnetic islands
- Colloquium: Artificial spin ice: Designing and imaging magnetic frustration
- Direct observation of the ice rule in artificial kagome spin ice
- Extensive degeneracy, Coulomb phase and magnetic monopoles in an artificial realization of the square ice model
- Artificial Kagome Arrays of Nanomagnets: A Frozen Dipolar Spin Ice
- Fragmentation of magnetism in artificial kagome dipolar spin ice
- Energy minimization and AC demagnetization in a nanomagnet array
- Demagnetization Protocols for Frustrated Interacting Nanomagnet Arrays
- Perpendicular Magnetization and Generic Realization of the Ising Model in Artificial Spin Ice
- FePd as a material for thermally active artificial spin ice
- Chiral nature of magnetic monopoles in artificial spin ice
- Magnetic diffuse scattering in artificial kagome spin ice
- Non-universality of artificial frustrated spin systems
- A new look on the two-dimensional Ising model: thermal artificial spins
- Kinetic pathways to the magnetic charge crystal in artificial dipolar spin ice
- Ground-State Candidate for the Dipolar Kagome Ising Antiferromagnet
- Tuning magnetic frustration of nanomagnets in triangular-lattice geometry
- Ignoring your neighbors: Moment correlations dominated by indirect or distant interactions in an ordered nanomagnet array
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- Remagnetization in the array of ferromagnetic nanowires with periodic and quasiperiodic order
- Heisenberg pseudo-exchange and emergent anisotropies in field-driven pinwheel artificial spin ice
- Signatures of long range dipolar interactions in artificial square ice
- Size-Stretched Exponential Relaxation in a Model with Arrested States
- Artificial vertex systems by design
- Metastability and dynamics in remanent states of square artificial spin ice with long-range dipole interactions
- Magnetic Order and Long-Range Interactions in Mesoscopic Ising Chains
- Field-driven Reversal Models in Artificial Spin Ice
- State transitions and hysteresis in a transverse magnetic island chain
- Magnetic texture control in ion-implanted metamaterials