Patents by Inventor Donald M. Eigler
Donald M. Eigler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9437269Abstract: 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.Type: GrantFiled: March 22, 2016Date of Patent: September 6, 2016Assignee: GLOBALFOUNDRIES INC.Inventors: Donald M. Eigler, Andreas J. Heinrich, Sebastian Loth, Christopher P. Lutz
-
Publication number: 20160203851Abstract: 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.Type: ApplicationFiled: March 22, 2016Publication date: July 14, 2016Applicant: GLOBALFOUNDRIES INC.Inventors: DONALD M. EIGLER, ANDREAS J. HEINRICH, SEBASTIAN LOTH, CHRISTOPHER P. LUTZ
-
Patent number: 9343130Abstract: 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.Type: GrantFiled: March 4, 2014Date of Patent: May 17, 2016Assignee: GLOBALFOUNDRIES INC.Inventors: Donald M. Eigler, Andreas J. Heinrich, Sebastian Loth, Christopher P. Lutz
-
Publication number: 20140185371Abstract: 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.Type: ApplicationFiled: March 4, 2014Publication date: July 3, 2014Applicant: International Business Machines CorporationInventors: Donald M. Eigler, Andreas J. Heinrich, Sebastian Loth, Christopher P. Lutz
-
Patent number: 8724376Abstract: 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.Type: GrantFiled: September 15, 2011Date of Patent: May 13, 2014Assignee: International Business Machines CorporationInventors: Donald M. Eigler, Andreas J. Heinrich, Sebastian Loth, Christopher P. Lutz
-
Publication number: 20130070518Abstract: 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.Type: ApplicationFiled: September 15, 2011Publication date: March 21, 2013Applicant: International Business Machines CorporationInventors: Donald M. Eigler, Andreas J. Heinrich, Sebastian Loth, Christopher P. Lutz
-
Patent number: 5323376Abstract: The present invention relates to an atomic scale electronic switch; wherein the position of one or more atoms or molecules is or are varied to control the state of the switch. The switch includes a plurality of fixed terminals approximately separated less than 100 .ANG.. Controlling the state of the switch is accomplished by applying a voltage or current to the terminals, thereby moving at least one atoms toward a desired terminal.Type: GrantFiled: July 27, 1992Date of Patent: June 21, 1994Assignee: International Business MachinesInventor: Donald M. Eigler
-
Patent number: 5166919Abstract: The present invention relate to an atomic scale electronic switch wherein the position of one or more atoms (12, 20) or molecules is varied to control the state of the switch. Terminals (10, 11, 21-23) may be tips of scanning tunneling microscopes or STMs. A change in position of the switch will result in a change in conductance between the spaced apart terminals. Voltage or current pulses cause the switching element (12) to change positions.Type: GrantFiled: July 11, 1991Date of Patent: November 24, 1992Assignee: International Business Machines CorporationInventor: Donald M. Eigler
-
Patent number: 5144148Abstract: A method and structure in which an adsorbate atom or molecule is repositioned on a substrate surface by moving the tip of an STM to a position adjacent to the atom to be moved and causing the atom to be attracted to the tip. While the atom remains bound to the surface (or, alternatively, is lifted), the tip is moved laterally to drag (or carry) the atom to a desired position at which it is bound to the surface.The atom may be repositioned in close proximity to an atom of the same or another type on the same or a different substrate to create a desired multi-atom structure or synthesize a molecule, or an atom may be removed to cleave a multi-atom structure, or a change in state of a multi-atom structure may be effected.Type: GrantFiled: August 17, 1990Date of Patent: September 1, 1992Assignee: International Business Machines CorporationInventor: Donald M. Eigler
-
Patent number: 4987312Abstract: A method is disclosed for repositioning an adsorbate atom or molecule on a substrate surface by moving the tip of a STM to a position adjacent the atom to be moved and subsequently increasing the attraction between the tip and atom by moving the tip closer to the substrate, and then, while the atom remains bound to the surface, moving the tip laterally to drag the atom to a desired position on the surface. The tip is then moved away from the substrate, reducing the attraction between the atom and tip and leaving the atom bound at the desired position.The atom may be repositioned in close proximity to an atom of the same or another type on the same or a different substrate to create a desired multi-atom structure or synthesize a molecule.Type: GrantFiled: November 7, 1989Date of Patent: January 22, 1991Assignee: International Business Machines CorporationInventor: Donald M. Eigler