The density of current flowing through a contact of the rod - film magnetic junction of spin-injection generator

 

E. À. Vilkov, S. Chigarev

Kotel’nikov Institute of RadioEngineering and Electronics of Russian Academy of sciences, Vvedensky sq. 1, Fryazino Moscow region, 141190, Russia

 

The paper is received on May 26, 2017

 

Abstract. The passing of electric current through the contact a ferromagnetic rod – a ferromagnetic plate is considered in a model of magnetic junction of the type rod– film of spin - injection THz's generator. The actual radius of an electrically conductive part of a contact surface is determined by experimentally measured contact resistance of the rod–plate. Essential decrease of radius of conductive area in comparison with the area of mechanical contact is established. It leads to the increase in a current density through the contact by hundreds of times up to the magnitude necessary for emergence of THz - radiation in the considered magnetic junction.

Keywords: Magnetic junction, mechanical contact, tightening resistance, film resistance, contact resistance, radius of a contact surface, current density.

References

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For citation:

E. À. Vilkov, S. Chigarev. The density of current flowing through a contact of the rod - film magnetic junction of spin-injection generator. Zhurnal Radioelektroniki - Journal of Radio Electronics, 2017, No. 7. Available at http://jre.cplire.ru/jre/jul17/4/text.pdf. (In Russian)