Tunneling Conductivity of Manganites with Negative Magnetoresistance

• Authors: Yu. Medvedev , V. Tarenkov , V. Svistunov , A. Abaloshev , I. Abalosheva , S. Lewandowski
• Languages of publication: EN

Abstracts

EN

Tunneling investigations of ferromagnetic La_{0.6}Sr_{0.4}MnO_{3} ceramic samples showing negative magnetoresistance effect were carried out in two types of junctions: symmetric "break junctions" and asymmetric ceramics-insulator-metal junctions. The results are consistent with the presence of small ferromagnetic clusters in the insulating barriers of both types of junctions and suggest a two-phase state realized by impurity mechanism of phase separation.

Keywords

EN

75.70.Pa

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2000
• Volume: 97
• Issue: 5
• Pages: 827-830

Dates

published

2000-05

Contributors

author

Yu. Medvedev

• Donetsk Physical-Technical Institute of the National Academy of Sciences of Ukraine, R. Luxemburg 72, 340114 Donetsk, Ukraine

author

V. Tarenkov

• Donetsk Physical-Technical Institute of the National Academy of Sciences of Ukraine, R. Luxemburg 72, 340114 Donetsk, Ukraine

author

V. Svistunov

• Donetsk Physical-Technical Institute of the National Academy of Sciences of Ukraine, R. Luxemburg 72, 340114 Donetsk, Ukraine

author

A. Abaloshev

• Instytut Fizyki PAN, Al. Lotników 32/46, 02-668 Warszawa, Poland

author

I. Abalosheva

• Instytut Fizyki PAN, Al. Lotników 32/46, 02-668 Warszawa, Poland

author

S. Lewandowski

• Instytut Fizyki PAN, Al. Lotników 32/46, 02-668 Warszawa, Poland

Identifiers

DOI

10.12693/APhysPolA.97.827