Electroresistance of Electrically Nonhomogeneous La_{0.67}Ca_{0.33}MnO_3/MgO Thin Films

• Authors: O. Kiprijanovič , A. Lučun , S. Ašmontas , F. Anisimovas , R. Butkutė , A. Maneikis , A. Sužiedėlis , B. Vengalis
• Languages of publication: EN

Abstracts

EN

Current and electrical field-induced electroresistive effects were investigated for La_{0.67}Ca_{0.33}MnO_3/MgO thin films demonstrating nanosized electrical inhomogeneities. Two different models based on enhanced conductivity of intergrain boundaries by injecting spin-polarized carriers from ferromagnetic grains and electrical field-enhanced hopping of carriers in high resistance intergrain media were carried out to explain nonlinear electrical properties of the films.

Keywords

EN

73.50.Gr; 73.50.Lw; 73.63.Bd

Discipline

• 73.50.Lw: Thermoelectric effects
• 73.63.Bd: Nanocrystalline materials
• 73.50.Gr: Charge carriers: generation, recombination, lifetime, trapping, mean free paths

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 1
• Pages: 141-146

Dates

published

2007-01

received

2006-09-04

Contributors

author

O. Kiprijanovič

• Semiconductor Physics Institute, A. Goštauto 11, Vilnius, 01108 Lithuania

author

A. Lučun

• Semiconductor Physics Institute, A. Goštauto 11, Vilnius, 01108 Lithuania

author

S. Ašmontas

• Semiconductor Physics Institute, A. Goštauto 11, Vilnius, 01108 Lithuania

author

F. Anisimovas

• Semiconductor Physics Institute, A. Goštauto 11, Vilnius, 01108 Lithuania

author

R. Butkutė

• Semiconductor Physics Institute, A. Goštauto 11, Vilnius, 01108 Lithuania

author

A. Maneikis

• Semiconductor Physics Institute, A. Goštauto 11, Vilnius, 01108 Lithuania

author

A. Sužiedėlis

• Semiconductor Physics Institute, A. Goštauto 11, Vilnius, 01108 Lithuania

author

B. Vengalis

• Semiconductor Physics Institute, A. Goštauto 11, Vilnius, 01108 Lithuania

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Identifiers

DOI

10.12693/APhysPolA.111.141