期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.157204
关键词
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资金
- DFG [SFB668-A1, GrK1286]
- ERC Advanced Grant FURORE
- Emmy-Noether-Program of the DFG [KH324/1-1]
- HGF-YIG Programme [VH-NG-717]
We demonstrate using inelastic scanning tunneling spectroscopy and simulations based on density functional theory that the amplitude and sign of the magnetic anisotropy energy for a single Fe atom adsorbed onto the Pt(111) surface can be manipulated by modifying the adatom binding site. Since the magnitude of the measured anisotropy is remarkably small, up to an order of magnitude smaller than previously reported, electron-hole excitations are weak and thus the spin excitation exhibits long lived precessional lifetimes compared to the values found for the same adatom on noble metal surfaces.
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