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research article
Magnetic Hysteresis in Er Trimers on Cu(111)
2016
We report magnetic hysteresis in Er clusters on. Cu(111) starting from the size-of three atoms. combining Xray magnetic circular dichroism, scanning tunneling microscopy, and mean-field nucleation theory, we determine the size dependent magnetic properties of the Er clusters. Er atoms and dimers-are paramagnetic, and their easy magnetization axes are oriented in-plane. In contrast, timers and bigger dusters exhibit magnetic hysteresis at 2.5 K with a relaxation time of 2 min at 0.1 T and out-of-plane easy axis. This appearance of magnetic stability for trimers coincides with their enhanced structural stability.
Type
research article
Web of Science ID
WOS:000377642700009
Authors
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Wackerlin, Christian
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Publication date
2016
Publisher
Published in
Volume
16
Issue
6
Start page
3475
End page
3481
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
July 19, 2016
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