Abstract: An antiferromagnetic nanostructure according to one embodiment includes an array of at least two antiferromagnetically coupled magnetic atoms having at least two magnetic states that are stable for at least one picosecond even in the absence of interaction with an external structure, the array having a net magnetic moment of zero or about zero, wherein the array has 100 atoms or less along a longest dimension thereof. An atomic-scale structure according to one embodiment has a net magnetic moment of zero or about zero; two or more stable magnetic states; and having an array of atoms that has magnetic moments that alternate between adjacent magnetic atoms along one or more directions. Such structures may be used to store data at ultra-high densities.

Abstract: An antiferromagnetic nanostructure according to one embodiment includes an array of at least two antiferromagnetically coupled magnetic atoms having at least two magnetic states that are stable for at least one picosecond even in the absence of interaction with an external structure, the array having a net magnetic moment of zero or about zero, wherein the array has 100 atoms or less along a longest dimension thereof. An atomic-scale structure according to one embodiment has a net magnetic moment of zero or about zero; two or more stable magnetic states; and having an array of atoms that has magnetic moments that alternate between adjacent magnetic atoms along one or more directions. Such structures may be used to store data at ultra-high densities.

Abstract: An atomic-scale structure according to one embodiment has a net magnetic moment of zero or about zero, two or more stable magnetic states, and an array of atoms that has magnetic moments that alternate between adjacent magnetic atoms along one or more directions. Such structures may be used to store data at ultra-high densities. An antiferromagnetic nanostructure according to another embodiment includes multiple arrays each corresponding to a bit. Each array has at least eight antiferromagnetically coupled magnetic atoms. Each array has at least two readable magnetic states that are stable for at least one picosecond. Each array has a net magnetic moment of zero or about zero. No external stabilizing structure exerts influence over the arrays for stabilizing the arrays. Each array has 100 atoms or less along a longest dimension thereof.

Abstract: An atomic-scale structure according to one embodiment has a net magnetic moment of zero or about zero, two or more stable magnetic states, and an array of atoms that has magnetic moments that alternate between adjacent magnetic atoms along one or more directions. Such structures may be used to store data at ultra-high densities. An antiferromagnetic nanostructure according to another embodiment includes multiple arrays each corresponding to a bit. Each array has at least eight antiferromagnetically coupled magnetic atoms. Each array has at least two readable magnetic states that are stable for at least one picosecond. Each array has a net magnetic moment of zero or about zero. No external stabilizing structure exerts influence over the arrays for stabilizing the arrays. Each array has 100 atoms or less along a longest dimension thereof.

Abstract: An antiferromagnetic nanostructure according to one embodiment includes an array of at least two antiferromagnetically coupled magnetic atoms having at least two magnetic states that are stable for at least one picosecond even in the absence of interaction with an external structure, the array having a net magnetic moment of zero or about zero, wherein the array has 100 atoms or less along a longest dimension thereof. An atomic-scale structure according to one embodiment has a net magnetic moment of zero or about zero; two or more stable magnetic states; and having an array of atoms that has magnetic moments that alternate between adjacent magnetic atoms along one or more directions. Such structures may be used to store data at ultra-high densities.

Abstract: An antiferromagnetic nanostructure according to one embodiment includes an array of at least two antiferromagnetically coupled magnetic atoms having at least two magnetic states that are stable for at least one picosecond even in the absence of interaction with an external structure, the array having a net magnetic moment of zero or about zero, wherein the array has 100 atoms or less along a longest dimension thereof. An atomic-scale structure according to one embodiment has a net magnetic moment of zero or about zero; two or more stable magnetic states; and having an array of atoms that has magnetic moments that alternate between adjacent magnetic atoms along one or more directions. Such structures may be used to store data at ultra-high densities.