Hyperfine interaction of individual atoms on a surface
- 주제(기타) Multidisciplinary Sciences
- 설명문(일반) [Willke, Philip; Bae, Yujeong; Yang, Kai; Lutz, Christopher P.] IBM Corp, Almaden Res Ctr, 650 Harry Rd, San Jose, CA 95120 USA; [Willke, Philip; Bae, Yujeong; Choi, Taeyoung; Heinrich, Andreas J.] Inst for Basic Sci Korea, Ctr Quantum Nanosci, Seoul 03760, South Korea; [Willke, Philip; Bae, Yujeong; Choi, Taeyoung; Heinrich, Andreas J.] Ewha Womans Univ, Dept Phys, Seoul 03760, South Korea; [Lado, Jose L.; Fernandez-Rossier, Joaquin] Int Iberian Nanotechnol Lab INL, QuantaLab, P-4715310 Braga, Portugal; [Lado, Jose L.] Swiss Fed Inst Technol, Inst Theoret Phys, CH-8093 Zurich, Switzerland; [Ferron, Alejandro] Univ Nacl Nordeste, Inst Modelado & Innovac Tecnol CONICET UNNE, Fac Ciencias Exactas Nat & Agrimensura, W3404AAS, Corrientes, Argentina; [Ardavan, Arzhang] Univ Oxford, Dept Phys, Clarendon Lab, Ctr Adv Electron Spin Resonance, Oxford OX1 3PU, England
- 등재 SCIE, SCOPUS
- 발행기관 AMER ASSOC ADVANCEMENT SCIENCE
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000156857
- 본문언어 영어
- Published As http://dx.doi.org/10.1126/science.aat7047
초록/요약
Taking advantage of nuclear spins for electronic structure analysis, magnetic resonance imaging, and quantum devices hinges on knowledge and control of the surrounding atomic-scale environment. We measured and manipulated the hyperfine interaction of individual iron and titanium atoms placed on a magnesium oxide surface by using spin-polarized scanning tunneling microscopy in combination with single-atom electron spin resonance. Using atom manipulation to move single atoms, we found that the hyperfine interaction strongly depended on the binding configuration of the atom. We could extract atom-and position-dependent information about the electronic ground state, the state mixing with neighboring atoms, and properties of the nuclear spin. Thus, the hyperfine spectrum becomes a powerful probe of the chemical environment of individual atoms and nanostructures.
more