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, said functionally coupled island being placed within a chirality-controlled kagome spin ice structure, each ring structure having six islands with their long axis at 120°
- to their neighbors and created, for example, by lithographic means;
each of the functionally coupled islands being oriented along one of the six sides of the hexagonal ring structure of said kagome spin ice component, wherein the functionally coupled islands are substantially identical but differ in a given physical property;
said functionally coupled island structures providing a mechanism in which the energy state and vortex chirality is controlled according to the physical property of the 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.
17 Citations
5 Claims
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1. A method for achieving specific states of functionally coupled islands of a functional material, said functionally coupled island being placed within a chirality-controlled kagome spin ice structure, each ring structure having six islands with their long axis at 120°
- to their neighbors and created, for example, by lithographic means;
each of the functionally coupled islands being oriented along one of the six sides of the hexagonal ring structure of said kagome spin ice component, wherein the functionally coupled islands are substantially identical but differ in a given physical property;
said functionally coupled island structures providing a mechanism in which the energy state and vortex chirality is controlled according to the physical property of the functional material in the functionally coupled islands. - View Dependent Claims (2, 3, 4, 5)
- to their neighbors and created, for example, by lithographic means;
Specification