Long-range ferrimagnetic order in a two-dimensional supramolecular Kondo lattice

Nature Communications
Jan GirovskyNirmalya Ballav

Abstract

Realization of long-range magnetic order in surface-supported two-dimensional systems has been challenging, mainly due to the competition between fundamental magnetic interactions as the short-range Kondo effect and spin-stabilizing magnetic exchange interactions. Spin-bearing molecules on conducting substrates represent a rich platform to investigate the interplay of these fundamental magnetic interactions. Here we demonstrate the direct observation of long-range ferrimagnetic order emerging in a two-dimensional supramolecular Kondo lattice. The lattice consists of paramagnetic hexadeca-fluorinated iron phthalocyanine (FeFPc) and manganese phthalocyanine (MnPc) molecules co-assembled into a checkerboard pattern on single-crystalline Au(111) substrates. Remarkably, the remanent magnetic moments are oriented in the out-of-plane direction with significant contribution from orbital moments. First-principles calculations reveal that the FeFPc-MnPc antiferromagnetic nearest-neighbour coupling is mediated by the Ruderman-Kittel-Kasuya-Yosida exchange interaction via the Au substrate electronic states. Our findings suggest the use of molecular frameworks to engineer novel low-dimensional magnetically ordered materials and their applic...Continue Reading

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Citations

Apr 21, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·María Blanco-ReyAndres Arnau
Aug 11, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·J FernándezA A Aligia
Apr 28, 2018·Nature Communications·Andrey M TokmachevVyacheslav G Storchak
May 24, 2020·Nature Communications·Xiangyang LiJinlong Yang
Feb 18, 2021·ACS Nano·Pin-Cheng LinLino M C Pereira
Apr 2, 2019·Nano Letters·Nemanja KocićJascha Repp
Nov 2, 2018·Journal of the American Chemical Society·Qin-Kun LiJun Jiang
Mar 7, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Ling ZhangJingdong Zhang
Sep 23, 2020·Journal of the American Chemical Society·Yan ZhaoShiyong Wang
Nov 13, 2021·ACS Nano·Philip WillkeTaeyoung Choi

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Methods Mentioned

BETA
X-ray
circular dichroism
scanning tunnelling microscopy
quartz crystal microbalance

Software Mentioned

XMCD
Gwyddion
VASP

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