Article ID Journal Published Year Pages File Type
5468322 Vacuum 2017 7 Pages PDF
Abstract
The structure and transport properties of Mn0.98Cr0.02Te and MnTe films prepared by pulsed laser deposition were investigated. The metal-semiconductor transition was observed below the Néel temperature of MnTe. A diode-like behavior near the transition temperature was shown in the voltage-current characteristics for these films grown with incompletely connected islands. The rough surface was proven to be necessary for the nonlinear voltage-current behavior. The Schottky barrier between the Ag electrode and the rough surface of the film contributed to the nonlinear voltage-current characteristic. The inhomogeneity of Cr along the direction of currents could not induce the diode-like behavior. The nonlinear current-voltage relationship resulted in the shift of metal-semiconductor transition temperature.
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Related Topics
Physical Sciences and Engineering Materials Science Surfaces, Coatings and Films
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