Method of controlling the states and vortex chirality in hexagonal ring structures comprising nanoscale magnetic elements
First Claim
1. A method for achieving specific states of functionally coupled islands of a functional material, the method comprising the following steps:
- providing a chirality-controlled kagome spin ice structure;
placing a functionally coupled island within the kagome spin ice structure, the placing step resulting in each ring structure having six islands with their long axis at 60°
to adjacent kagome spin ice structures;
orienting each of the functionally coupled islands along one of the six sides of the hexagonal ring structure of the kagome spin ice component, the functionally coupled islands being substantially identical but differing in at least one physical property of a functional material coupled in the functionally coupled islands;
the functionally coupled island structures providing a mechanism with energy state and vortex chirality controlled according to the physical property of a functional material in the functionally coupled islands.
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Abstract
A method is provided for achieving specific magnetic states with a given vortex chirality in artificial kagome spin ice building block structures containing one or more hexagonal rings of ferromagnetic islands created with electron beam lithography, where a subgroup of the ferromagnetic islands have a smaller width and therefore higher switching field than the other normal (wider) islands and are placed at specific positions in each of the rings. The positioning of the islands determines the magnetic state of the building block structure during magnetization reversal, and determines the chirality of the magnetic vortices that occur in each ring.
18 Citations
6 Claims
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1. A method for achieving specific states of functionally coupled islands of a functional material, the method comprising the following steps:
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providing a chirality-controlled kagome spin ice structure; placing a functionally coupled island within the kagome spin ice structure, the placing step resulting in each ring structure having six islands with their long axis at 60°
to adjacent kagome spin ice structures;orienting each of the functionally coupled islands along one of the six sides of the hexagonal ring structure of the kagome spin ice component, the functionally coupled islands being substantially identical but differing in at least one physical property of a functional material coupled in the functionally coupled islands; the functionally coupled island structures providing a mechanism with energy state and vortex chirality controlled according to the physical property of a functional material in the functionally coupled islands. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification