Temperature dependent induced spin polarization in Cr2O3 overlayers on epitaxial CrO2 films

Ruihua Cheng, Takashi Komesu, Hae Kyung Jeong, L. Yuan, S. H. Liou, B. Doudin, P. A. Dowben, Losovyj Ya.B. Losovyj

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


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 languageEnglish (US)
Pages (from-to)211-216
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number4
StatePublished - Sep 23 2002


  • Chromium oxide
  • Magnetism

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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