Spin-resolved inverse photoemission investigations show that the native Cr2O3 surface is antiferromagnetically coupled to the CrO2 thin film substrate, with a temperature dependent induced polarization. The Cr2O3 exhibits the characteristic behavior of a rigid band/spin mixing behavior (non-Stoner) of a local moment paramagnet. The strong shifts of the conduction band edge from room temperature to low temperature suggests that the extent of the induced polarization of the Cr2O3 oxide surface, by the CrO2 substrate, may be partly related to Coulomb blockade effects identified in CrO2/Cr2O3/CrO2 junctions.
|Original language||English (US)|
|Number of pages||6|
|Journal||Physics Letters, Section A: General, Atomic and Solid State Physics|
|State||Published - Sep 23 2002|
- Chromium oxide
ASJC Scopus subject areas
- Physics and Astronomy(all)