LSMO/YBCO Heterostructures and Investigation of "Negative" Resistance Effect in the Interface

• Authors: M. Sojková , T. Nurgaliev , V. Štrbík , Š. Chromik , B. Blagoev , M. Španková
• Languages of publication: EN

Abstracts

EN

Samples containing the ferromagnetic manganite La_{0.67}Sr_{0.33}MnO₃ (LSMO) and high temperature superconducting YBa₂Cu₃O₇ (YBCO) single thin film areas and YBCO/LSMO bilayer area were prepared on LaAlO₃ (LAO) substrates and were used for investigation of the electrical properties of the interface. The measurements in the YBCO/LSMO interface demonstrated "negative" values of the resistance. A good interpretation of the obtained results was performed in the framework of a 1D model, which took into account the resistance of the interface R_{if} and the temperature dependence of the resistance of YBCO and LSMO films. It was shown that the effect of "negative" resistance arises because of the redistribution of the measuring electrical current in the interphase area if the resistance of the interface R_{if} is small in comparison with the resistances of the neighboring electrodes.

Keywords

EN

73.40.-c; 73.40.Cg; 74.78.Fk; 74.72.-h; 75.50.Cc

Discipline

• 74.72.-h: Cuprate superconductors
• 73.40.-c: Electronic transport in interface structures
• 74.78.Fk: Multilayers, superlattices, heterostructures
• 73.40.Cg: Contact resistance, contact potential
• 75.50.Cc: Other ferromagnetic metals and alloys

• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 4
• Pages: 842-844

Dates

published

2017-04

Contributors

author

M. Sojková

• Institute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia

author

T. Nurgaliev

• Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Chausse, 1784 Sofia, Bulgaria

author

V. Štrbík

• Institute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia

author

Š. Chromik

• Institute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia

author

B. Blagoev

• Institute of Electronics, Bulgarian Academy of Sciences, 72 Tsarigradsko Chausse, 1784 Sofia, Bulgaria

author

M. Španková

• Institute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 84104 Bratislava, Slovakia

References

• [1] M.E. Flatté, IEEE Trans. Electron. Dev. 54, 907 (2007), doi: 10.1109/TED.2007.894376
• [2] M. Sojková, V. Štrbík, T. Nurgaliev, Š. Chromik, E. Dobročka, M. Španková, B. Blagoev, N. Gál, J. Phys. Conf. Series 700, 012022 (2016), doi: 10.1088/1742-6596/700/1/012022
• [3] I. Giaver, in Tunneling Phenomena in Solids, Eds. E. Burstein, S. Lundqvist, Plenum Press, New York 1969, p. 19, doi: 10.1007/978-1-4684-1752-4_3

Identifiers

DOI

10.12693/APhysPolA.131.842