Experimental Realization of the 1D Random Field Ising Model

N. S. Bingham; S. Rooke; J. Park; A. Simon; W. Zhu; X. Zhang; J. Batley; J. D. Watts; C. Leighton; K. A. Dahmen; Peter E Schiffer

doi:10.1103/PhysRevLett.127.207203

Experimental Realization of the 1D Random Field Ising Model

N. S. Bingham, S. Rooke, J. Park, A. Simon, W. Zhu, X. Zhang, J. Batley, J. D. Watts, C. Leighton, K. A. Dahmen, Peter E Schiffer

Research output: Contribution to journal › Article › peer-review

Abstract

We have measured magnetic-field-induced avalanches in a square artificial spin ice array of interacting nanomagnets. Starting from the ground state ordered configuration, we imaged the individual nanomagnet moments after each successive application of an incrementally increasing field. The statistics of the evolution of the moment configuration show good agreement with the canonical one-dimensional random field Ising model. We extract information about the microscopic structure of the arrays from our macroscopic measurements of their collective behavior, demonstrating a process that could be applied to other systems exhibiting avalanches.

Original language	English (US)
Article number	207203
Journal	Physical review letters
Volume	127
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.127.207203
State	Published - Nov 12 2021
Externally published	Yes

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General Physics and Astronomy

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10.1103/PhysRevLett.127.207203

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abstract = "We have measured magnetic-field-induced avalanches in a square artificial spin ice array of interacting nanomagnets. Starting from the ground state ordered configuration, we imaged the individual nanomagnet moments after each successive application of an incrementally increasing field. The statistics of the evolution of the moment configuration show good agreement with the canonical one-dimensional random field Ising model. We extract information about the microscopic structure of the arrays from our macroscopic measurements of their collective behavior, demonstrating a process that could be applied to other systems exhibiting avalanches.",

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AU - Rooke, S.

AU - Park, J.

AU - Simon, A.

AU - Zhu, W.

AU - Zhang, X.

AU - Batley, J.

AU - Watts, J. D.

AU - Leighton, C.

AU - Dahmen, K. A.

AU - Schiffer, Peter E

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AB - We have measured magnetic-field-induced avalanches in a square artificial spin ice array of interacting nanomagnets. Starting from the ground state ordered configuration, we imaged the individual nanomagnet moments after each successive application of an incrementally increasing field. The statistics of the evolution of the moment configuration show good agreement with the canonical one-dimensional random field Ising model. We extract information about the microscopic structure of the arrays from our macroscopic measurements of their collective behavior, demonstrating a process that could be applied to other systems exhibiting avalanches.

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Experimental Realization of the 1D Random Field Ising Model

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