Magnetic doping of a thiolated gold superatom
- ORNL
- Georgia Institute of Technology
The Au{sub 25}(SR){sub 18}{sup -} cluster is a new member in the superatom family which features a centered icosahedral shell (Au{sub 13}) protected by six RS(AuSR){sub 2} motifs (RS? being an alkylthiolate group). Here we show that this superatom can be magnetically doped by replacing the center Au atom with Cr, Mn, or Fe. We find that Cr- and Mn-doped clusters have an optimized magnetic moment of 5 Bohr magnetons while the Fe-doped cluster has an optimized magnetic moment of 3 Bohr magnetons. Although the dopant atom's local magnetic moment makes a major contribution to the total moment, the icosahedral Au{sub 12} shell is also found to be significantly magnetized. Our work here provides a scenario of magnetic doping of a metal-cluster superatom which is protected by ligands and made by wet chemistry.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 967130
- Journal Information:
- Physical Review B, Vol. 80, Issue 11; ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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