Correlation between Electronic Configuration and Magnetic Stability in Dysprosium Single Atom Magnets
METADATA ONLY
Loading...
Author / Producer
Date
2021-10-13
Publication Type
Journal Article
ETH Bibliography
yes
Citations
Altmetric
METADATA ONLY
Data
Rights / License
Abstract
Single atom magnets offer the possibility of magnetic information storage in the most fundamental unit of matter. Identifying the parameters that control the stability of their magnetic states is crucial to design novel quantum magnets with tailored properties. Here, we use X-ray absorption spectroscopy to show that the electronic configuration of dysprosium atoms on MgO(100) thin films can be tuned by the proximity of the metal Ag(100) substrate onto which the MgO films are grown. Increasing the MgO thickness from 2.5 to 9 monolayers induces a change in the dysprosium electronic configuration from 4f9 to 4f10. Hysteresis loops indicate long magnetic lifetimes for both configurations, however, with a different field-dependent magnetic stability. Combining these measurements with scanning tunneling microscopy, density functional theory, and multiplet calculations unveils the role of the adsorption site and charge transfer to the substrate in determining the stability of quantum states in dysprosium single atom magnets.
Permanent link
Publication status
published
External links
Editor
Book title
Journal / series
Volume
21 (19)
Pages / Article No.
8266 - 8273
Publisher
American Chemical Society
Event
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Single atom magnets; lanthanides; X-ray magnetic circular dichroism; scanning tunneling microscopy; density functional theory; multiplet calculations
Organisational unit
03986 - Gambardella, Pietro / Gambardella, Pietro