Interatomic Spin Coupling in Manganese Clusters Registered on Graphene
Abstract
Different interatomic spin interactions in graphene-regulated Mn atomic clusters are investigated by low-temperature scanning tunneling microscopy and magnetic-field-dependent inelastic spin excitation spectroscopy. All dimers observed exhibit an antiferromagnetic (AFM) singlet ground state and spin transition from the singlet to triplet states, but their AFM coupling strength shows a unique dependence on their site registration on the graphene. Intriguing spin coupling can be found in the graphene-mediated Mn trimers, which manifest multilevel spin excitations. In combination with Heisenberg spin modeling and first-principles numerical simulation, an exclusive noncollinear spin configuration of the Mn trimer regulated by the graphene template can be determined, and our observed experimental exchange energies cannot be understood by a direct spin exchange mechanism, but suggest a nonlocal Ruderman-Kittel-Kasuya-Yosida indirect spin exchange mechanism through substrate modulation, which has not yet been achieved in graphene so far.
- Authors:
-
- Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Univ. of Chinese Academy of Sciences
- Univ. of Maryland, College Park, MD (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Univ. of Maryland, College Park, MD (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1541237
- Alternate Identifier(s):
- OSTI ID: 1405205
- Grant/Contract Number:
- SC0010833; DESC0010833
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 119; Journal Issue: 17; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS
Citation Formats
Ren, Jindong, Guo, Haiming, Pan, Jinbo, Zhang, Yan-Fang, Yang, Yifeng, Wu, Xu, Du, Shixuan, Ouyang, Min, and Gao, Hong-Jun. Interatomic Spin Coupling in Manganese Clusters Registered on Graphene. United States: N. p., 2017.
Web. doi:10.1103/physrevlett.119.176806.
Ren, Jindong, Guo, Haiming, Pan, Jinbo, Zhang, Yan-Fang, Yang, Yifeng, Wu, Xu, Du, Shixuan, Ouyang, Min, & Gao, Hong-Jun. Interatomic Spin Coupling in Manganese Clusters Registered on Graphene. United States. https://doi.org/10.1103/physrevlett.119.176806
Ren, Jindong, Guo, Haiming, Pan, Jinbo, Zhang, Yan-Fang, Yang, Yifeng, Wu, Xu, Du, Shixuan, Ouyang, Min, and Gao, Hong-Jun. Fri .
"Interatomic Spin Coupling in Manganese Clusters Registered on Graphene". United States. https://doi.org/10.1103/physrevlett.119.176806. https://www.osti.gov/servlets/purl/1541237.
@article{osti_1541237,
title = {Interatomic Spin Coupling in Manganese Clusters Registered on Graphene},
author = {Ren, Jindong and Guo, Haiming and Pan, Jinbo and Zhang, Yan-Fang and Yang, Yifeng and Wu, Xu and Du, Shixuan and Ouyang, Min and Gao, Hong-Jun},
abstractNote = {Different interatomic spin interactions in graphene-regulated Mn atomic clusters are investigated by low-temperature scanning tunneling microscopy and magnetic-field-dependent inelastic spin excitation spectroscopy. All dimers observed exhibit an antiferromagnetic (AFM) singlet ground state and spin transition from the singlet to triplet states, but their AFM coupling strength shows a unique dependence on their site registration on the graphene. Intriguing spin coupling can be found in the graphene-mediated Mn trimers, which manifest multilevel spin excitations. In combination with Heisenberg spin modeling and first-principles numerical simulation, an exclusive noncollinear spin configuration of the Mn trimer regulated by the graphene template can be determined, and our observed experimental exchange energies cannot be understood by a direct spin exchange mechanism, but suggest a nonlocal Ruderman-Kittel-Kasuya-Yosida indirect spin exchange mechanism through substrate modulation, which has not yet been achieved in graphene so far.},
doi = {10.1103/physrevlett.119.176806},
journal = {Physical Review Letters},
number = 17,
volume = 119,
place = {United States},
year = {Fri Oct 27 00:00:00 EDT 2017},
month = {Fri Oct 27 00:00:00 EDT 2017}
}
Web of Science
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