NDLI: Observation of Re-entrant Resistance in NbN/NbO/Co Trilayer

Content Provider	Springer Nature Link
Author	Prajapat, C. L. Yashwant, G. Bhattacharya, S. Singh, M. R. Ravikumar, G. Gupta, S. K.
Copyright Year	2012
Abstract	Transport measurements on a niobium nitride (NbN) film covered with a ferromagnetic cobalt layer are reported here. The sample shows a superconducting transition (T $_{SC}$) at 6.5 K. In the superconducting state, a dip in resistance is observed at a temperature referred to as T $_{MIN}$. Below T $_{MIN}$, resistance reappears, with a magnitude of about 1% of the normal-state resistance. The observed resistance is found to decrease on increasing the applied current (I). A possible reason for re-entrant resistance might be the vortex dynamics in NbN superconducting layer due to the stray fields created by the Co layer. Further confirmation of the observed behavior is obtained from the plot of resistance versus probe current measured at various temperatures in close vicinity of T $_{SC}$.
Starting Page	1455
Ending Page	1458
Page Count	4
File Format	PDF
ISSN	15571939
Journal	Journal of Superconductivity and Novel Magnetism
Volume Number	25
Issue Number	5
e-ISSN	15571947
Language	English
Publisher	Springer US
Publisher Date	2012-02-05
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Superconductor Ferromagnetic Vortices Characterization and Evaluation of Materials Magnetism, Magnetic Materials Strongly Correlated Systems, Superconductivity Condensed Matter Physics
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Condensed Matter Physics

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