Single-Atom Spin-Flip Spectroscopy

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Science  15 Oct 2004:
Vol. 306, Issue 5695, pp. 466-469
DOI: 10.1126/science.1101077

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We demonstrate the ability to measure the energy required to flip the spin of single adsorbed atoms. A low-temperature, high–magnetic field scanning tunneling microscope was used to measure the spin excitation spectra of individual manganese atoms adsorbed on Al2O3 islands on a NiAl surface. We find pronounced variations of the spin-flip spectra for manganese atoms in different local environments.

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