Controlling Atomic-Scale Quantum Magnetic Structures
Abstract
This grant supports research in quantum magnetism of single-atom spins, magnetic sensing, and pulsed spin resonance using a scanning tunneling microscope. IBM has demonstrated major progress in all three sets of goals during the 2017-2020 funding period. This progress isdocumented in twelve publications in high-impact journals, and summarized below. This effort is basic exploratory research in the electronic and magnetic properties of atoms, molecules and nanostructures that are positioned or assembled on surfaces with atomic-scale precision. This work employs low-temperature scanning tunneling microscopy (STM), together with the technique of single-atom electron spin resonance (ESR) using STM. The experiments were performed using atoms deposited on two atomic layers of MgO, which provides controlledisolation from the substrate and a well-ordered array of binding sites. The proposed work falls in three main categories: (1) Exploring single-atom spins, in which our spin resonance method is improved in capability, extended to apply to new atoms species, and exploited for probing the magnetic character of atoms on surfaces. (2) Magnetic and sensing and imaging at the atomic scale, to determine the positions and orientations of spins in nanostructures and molecules. (3) Developing control over the quantum stale of atomic spins by using pulsed spin resonance techniques, in order to use them as qubits in quantum information and sensing applications.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 11, 2021
- Accession Number
- AD1126144
Entities
People
- Christopher P Lutz
Organizations
- International Business Machines Corporation (Armonk, NY)