TY - JOUR
T1 - Magnetic relaxation mechanisms in ho single atom magnets
AU - Donati, Fabio
N1 - Funding Information:
The author acknowledges funding from Institute of Basic Science, Korea through the Project No. IBS319 R027-D1.
Publisher Copyright:
© 2020 Journal of Magnetics.
PY - 2020
Y1 - 2020
N2 - Surface-supported single atoms with long magnetic lifetime, also called single atom magnets, represent the ultimate limit of downscaling 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 directions of the research will be provided.
AB - Surface-supported single atoms with long magnetic lifetime, also called single atom magnets, represent the ultimate limit of downscaling 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 directions of the research will be provided.
KW - Magnetic relaxation
KW - Quantum magnets
KW - Scanning tunneling microscopy
KW - Single atom magnets
KW - Surface spins
KW - X-ray magnetic circular dichroism
UR - http://www.scopus.com/inward/record.url?scp=85099935799&partnerID=8YFLogxK
U2 - 10.4283/JMAG.2020.25.4.441
DO - 10.4283/JMAG.2020.25.4.441
M3 - Article
AN - SCOPUS:85099935799
VL - 25
SP - 441
EP - 452
JO - Journal of Magnetics
JF - Journal of Magnetics
SN - 1226-1750
IS - 4
ER -