Atomically resolved Larmor frequency detection on Si(111)-7×7 oxide surface

Sainoo, Yasuyuki; Isshiki, Hironari; Shahed, Syed Mohammad Fakruddin; Takaoka, Tsuyoshi; Komeda, Tadahiro
August 2009
Applied Physics Letters;8/24/2009, Vol. 95 Issue 8, p082504
Academic Journal
We demonstrate that the electron spin resonance–scanning tunneling microscope can detect the Larmor frequency of a single spin with the atomic scale resolution on the oxygen-adsorbed Si(111)-7×7 surface. The spin signal from the Si dangling bond was detected on the oxygen-induced bright Si adatom with the Larmor frequency corresponding to g∼2.00. However, no peak was detected on the dark adatom that is tied with an oxygen atom and the dangling bond is disappeared.


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