Spin blockade effects in chromium oxide intergrain magnetoresistance

A. Sokolov, C. S. Yang, L. Yuan, Sy-Hwang Liou, Ruihua Cheng, B. Xu, C. N. Borca, P. A. Dowben, B. Doudin

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7 Citations (Scopus)

Abstract

CrO 2 thin films with crystallites of a significant size permit investigation of the thin intergrain conduction between a limited numbers of crystals. Phoemission techniques reveal that the CrO 2 films are covered by a 1-2-nm-thick Cr 2O 3 insulating barrier. The electronic band gap of the surface electrons is 3.4 eV at low temperatures, decreases sharply down to 2.8 eV at ambient. Electric transport though a few junctions in series shows a remarkable zero-bias anomaly, interpreted in terms of blockade effects. We show that the magnetoresistance is governed by low-bias blockade in these junctions.

Original languageEnglish (US)
Pages (from-to)8801-8803
Number of pages3
JournalJournal of Applied Physics
Volume91
Issue number10 I
DOIs
StatePublished - May 15 2002

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chromium oxides
crystallites
anomalies
conduction
thin films
electronics
crystals
electrons

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Sokolov, A., Yang, C. S., Yuan, L., Liou, S-H., Cheng, R., Xu, B., ... Doudin, B. (2002). Spin blockade effects in chromium oxide intergrain magnetoresistance. Journal of Applied Physics, 91(10 I), 8801-8803. https://doi.org/10.1063/1.1452240

Spin blockade effects in chromium oxide intergrain magnetoresistance. / Sokolov, A.; Yang, C. S.; Yuan, L.; Liou, Sy-Hwang; Cheng, Ruihua; Xu, B.; Borca, C. N.; Dowben, P. A.; Doudin, B.

In: Journal of Applied Physics, Vol. 91, No. 10 I, 15.05.2002, p. 8801-8803.

Research output: Contribution to journalArticle

Sokolov, A, Yang, CS, Yuan, L, Liou, S-H, Cheng, R, Xu, B, Borca, CN, Dowben, PA & Doudin, B 2002, 'Spin blockade effects in chromium oxide intergrain magnetoresistance', Journal of Applied Physics, vol. 91, no. 10 I, pp. 8801-8803. https://doi.org/10.1063/1.1452240
Sokolov, A. ; Yang, C. S. ; Yuan, L. ; Liou, Sy-Hwang ; Cheng, Ruihua ; Xu, B. ; Borca, C. N. ; Dowben, P. A. ; Doudin, B. / Spin blockade effects in chromium oxide intergrain magnetoresistance. In: Journal of Applied Physics. 2002 ; Vol. 91, No. 10 I. pp. 8801-8803.
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