Surface aligned magnetic moments and hysteresis of an endohedral single-molecule magnet on a metal

Physical Review Letters
Rasmus WesterströmThomas Greber

Abstract

The interaction between the endohedral unit in the single-molecule magnet Dy_{2}ScN@C_{80} and a rhodium (111) substrate leads to alignment of the Dy 4f orbitals. The resulting orientation of the Dy_{2}ScN plane parallel to the surface is inferred from comparison of the angular anisotropy of x-ray absorption spectra and multiplet calculations in the corresponding ligand field. The x-ray magnetic circular dichroism is also angle dependent and signals strong magnetocrystalline anisotropy. This directly relates geometric and magnetic structure. Element specific magnetization curves from different coverages exhibit hysteresis at a sample temperature of ∼4  K. From the measured hysteresis curves, we estimate the zero field remanence lifetime during x-ray exposure of a submonolayer to be about 30 seconds.

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Citations

Nov 1, 2016·Journal of the American Chemical Society·Fupin LiuShangfeng Yang
Jul 1, 2017·Dalton Transactions : an International Journal of Inorganic Chemistry·Yongjian LiChunru Wang
Jul 7, 2017·Chemical Society Reviews·Shangfeng YangFei Jin
Sep 9, 2017·Nanotechnology·Fabian FritzCarola Meyer
Aug 23, 2018·Nanoscale·Stanislav M AvdoshenkoRasmus Westerström
Feb 14, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Lukas Spree, Alexey A Popov
Mar 5, 2020·Chemistry : a European Journal·Mikhail A ZykinMartin Jansen
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Jan 5, 2019·Physical Review Letters·A SinghaH Brune
May 10, 2016·Advanced Materials·Christian WäckerlinJan Dreiser
Nov 26, 2019·Advanced Science·Michał StudniarekJan Dreiser
Mar 16, 2021·Advanced Science·Chia-Hsiang ChenAlexey A Popov
Jun 15, 2018·The Journal of Physical Chemistry Letters·R StaniaT Greber
Aug 17, 2021·Advanced Materials·Fabian PaschkeMikhail Fonin
Apr 8, 2017·ACS Central Science·Florian AlloucheChristophe Copéret
Sep 22, 2021·ACS Nano·Aparajita SinghaFabio Donati

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