Negative Magnetoresistance of Layered High-t_{c} Compounds

• Authors: Yu. Medvedev , S. Yampolskii , S. Lewandowski
• Languages of publication: EN

Abstracts

EN

Magnetoresistance of layered high-T_{c} systems with quasi-two-dimensional superconductivity in magnetic field H applied parallel to superconducting planes was investigated theoretically. In such configuration an increase in the magnetic field intensity decreases the critical temperature of superconducting regions. It causes both a suppression of the gap parameter Δ and an increase in the tunneling current between the decoupled superconducting planes and, as a consequence, leads to negative magnetoresistance. The dependence of tunneling current on H was calculated for superconducting layer thickness d_{S} smaller than the superconducting correlation length. The results can be used for analysis of current-voltage characteristics of both superconductor-insulator-superconductor and superconductor-insulator normal metal multilayered tunnel structures.

Keywords

EN

74.72.Jt; 74.80.Dm

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1999
• Volume: 96
• Issue: 3-4
• Pages: 501-504

Dates

published

1999-09

received

1999-07-08

Contributors

author

Yu. Medvedev

• Donetsk Physical-Technical Institute of the National Academy of Sciences of Ukraine, Donetsk 340114, Ukraine

author

S. Yampolskii

• Donetsk Physical-Technical Institute of the National Academy of Sciences of Ukraine, Donetsk 340114, Ukraine

author

S. Lewandowski

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

Identifiers

DOI

10.12693/APhysPolA.96.501