STM Imaging of Magnetic Dots with Ferromagnetic Tip |
| A. Wawroa,b and A. Kasuyab a Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland bInstitute for Materials Research, Tohoku University, 2-1-1 Katahira, 980 Sendai, Japan |
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| We report on imaging of isolated, few nanometers in size, magnetic dots (Co, Ni) by the use of a scanning tunneling microscope equipped with a ferromagnetic Co tip in the presence of external magnetic field. The dependence of apparent height of dots as a function of magnetic field takes a hysteresis-like shape. We discuss possible mechanisms of the scanning tunneling microscope tip interactions with dots. |
| DOI: 10.12693/APhysPolA.97.547 PACS numbers: 34.80.Nz, 36.40.Cg, 61.16.Ch |