Abstract
Electron capture spectroscopy has been used to probe the electron spin polarization (ESP) at the topmost atomic layer at Ni(111) surfaces. Contrary to bulk behavior, the ESP-signal measuring the long-range surface magnetic order decreases from -43% at T=293 K almost linearly to zero at the bulk Curie temperature T cb=631 K. “Local” surface magnetic order is temperature independent and is detected far above T cb. Such a behavior is only found for the 3d transition metal Ni.
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