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The effect of phase separation on the temperature dependent magnetoresistance in perovskite oxide heterojunction
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10.1063/1.3003864
/content/aip/journal/apl/93/16/10.1063/1.3003864
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/16/10.1063/1.3003864
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The schematic for the electrode on the measurement of the LSMO/SNTO heterojunction. In this figure, the electrode on the surface of LSMO is large enough to cover the clusters of ferromagnetic and paramagnetic phases, so that the current is parallel through various regions of the LSMO film.

Image of FIG. 2.
FIG. 2.

The energy band structure and the schematic density of states of the LSMO/SNTO junction at the bias.

Image of FIG. 3.
FIG. 3.

The positive MR dependence on spin polarization for paramagnetic phase at temperatures of 100, 150, 200, and , respectively in LSMO/SNTO junction. The inset shows the resistance of the paramagnetic phase dependence on spin polarization.

Image of FIG. 4.
FIG. 4.

Simulated process of cluster percolation from low temperature ferromagnetic phase (black) to high temperature paramagnetic phase (white) phase transition in the mixed-phase description on a matrix at temperatures of 100 (a), 150 (b), 200 (c), and (d), respectively. The arrows indicate the warming process from .

Image of FIG. 5.
FIG. 5.

(a) The experimental MR dependence on magnetic field at the temperature range from in LSMO/SNTO junction. (b) The calculated MR dependence on magnetic field at the temperature range from in LSMO/SNTO junction. (c) The calculated magnetoresistance as a function of temperature with the magnetic fields of 0.1, 1, 3, and , respectively.

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/content/aip/journal/apl/93/16/10.1063/1.3003864
2008-10-24
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The effect of phase separation on the temperature dependent magnetoresistance in perovskite oxide heterojunction
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/16/10.1063/1.3003864
10.1063/1.3003864
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