The magnetoresistance of a PrFeAsO(1-x)F(y) superconductor
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
The magnetoresistance of a PrFeAsO(1-x)F(y) superconductor
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| Creator |
Bhoi, D
Sharath Chandra, L S Choudhury, Pranab Ganesan, V Mandal, P |
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| Subject |
Electronics
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| Description |
We have measured the temperature and magnetic field dependence of resistivity of polycrystalline PrFeAsO(0.60)F(0.12) samples in the normal and superconducting state. The superconducting onset transition temperature T(c)(on) shifts by similar to 4 K as H is increased from 0 to 14 T. The zero-temperature upper critical field H(c2)(0) estimated by using the Ginzburg-Landau theory and the Werthamer-Helfand-Hohenberg equation exceeds 100 T. The resistivity below T(c)(on) exhibits Arrhenius behavior due to thermally activated flux flow of vortices. The activation energy U(0), determined from the Arrhenius plot of the resistivity, shows a power-law decrease (U(0) alpha H(-alpha)) with magnetic field. The normal-state magnetoresistance varies quasilinearly with magnetic field and does not obey Kohler's rule, suggesting a multiband feature of the material.
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| Publisher |
IOP Publishing
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| Date |
2009-09
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/977/1/bhoi.pdf
Bhoi, D and Sharath Chandra, L S and Choudhury, Pranab and Ganesan, V and Mandal, P (2009) The magnetoresistance of a PrFeAsO(1-x)F(y) superconductor. Superconductor Science & Technology, 22 (9). Article No.-095015. ISSN 0953-2048 |
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| Relation |
http://cgcri.csircentral.net/977/
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