Magneto-optical Kerr effect studies of square artificial spin ice.
K. K. Kohli, Andrew L. Balk, Jie Li, Sheng Zhang, Ian Gilbert, Paul E. Lammert, Vincent H. Crespi,
Peter Schiffer, and Nitin Samarth
Phys. Rev. B 84, 180412(R) (2011)
K. K. Kohli, Andrew L. Balk, Jie Li, Sheng Zhang, Ian Gilbert, Paul E. Lammert, Vincent H. Crespi,
Peter Schiffer, and Nitin Samarth
Phys. Rev. B 84, 180412(R) (2011)
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| (a) Variation of coercivity at θ = 0 as a function of lattice spacing for square arrays. Measurements on various samples (arrays 1–4) are compared with micromagnetic simulations (black squares), comparing simulations of the same island outlines but with different spacing. (b) Experiment and simulation for square arrays as a function of angle for the largest lattice spacing of 880 nm. |
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