Magnetic Relaxation Mechanisms in Ho Single Atom Magnets
- 주제(키워드) Single atom magnets , X-ray magnetic circular dichroism , Scanning tunneling microscopy , quantum magnets , surface spins , magnetic relaxation
- 주제(기타) Materials Science, Multidisciplinary
- 주제(기타) Physics, Applied
- 주제(기타) Physics, Condensed Matter
- 설명문(일반) [Donati, Fabio] Inst Basic Sci IBS, Ctr Quantum Nanosci, Seoul 03760, South Korea; [Donati, Fabio] Ewha Womans Univ, Dept Phys, Seoul 03760, South Korea
- 등재 SCIE, SCOPUS, KCI등재
- 발행기관 KOREAN MAGNETICS SOC
- 발행년도 2020
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000175470
- 본문언어 영어
- Published As http://dx.doi.org/10.4283/JMAG.2020.25.4.441
초록/요약
Surface-supported single atoms with long magnetic lifetime, also called single atom magnets, represent the ultimate limit of donscaling of a magnetic bit. Due to the possibility to write, store and read information in their magnetic states, these atoms are model systems for future ultra-high-density magnetic storage devices. In this review, the properties of the most investigated single atom magnet, namely a Ho atom adsorbed on an ultrathin MgO film, will be presented together with the techniques used to address its quantum level structure and magnetic stability. The temperature and field dependent relaxation mechanisms of this unconventional magnetic system will be discussed based on recent findings. Finally, an overview of the open issues and possible future direction of the research will be provided.
more