Author/Authors :
Intikhab A. Ansari، نويسنده , , V. P. S. Awana، نويسنده , , Rajeev Rawat، نويسنده , ,
M. Shahabuddin، نويسنده , , M. Husain، نويسنده , , H. Kishan، نويسنده , ,
A. V. Narlikar، نويسنده ,
Abstract :
We report fluctuation-induced conductivity
(FIC) of the polycrystalline MgB2 superconductor in the
presence of magnetic field. The results are described in
terms of the temperature derivative of the resistivity, dq/dT.
The dq/dT peak temperature observed for H = 0 Tesla at
39 K remains very distinct under applied fields of 6 Tesla
and 8 Tesla at 22 and 20 K respectively. Aslamazov and
Larkin (AL) equations are used to explain the anisotropic
nature of the polycrystalline MgB2. The effective coherence
length, np (0) determined experimentally is 55.17 A ° , which
roughly matches with previously reported experimental
work.
