The Study of the Electronic Thermal Conductivity of Superconducting Magnesium Diboride (Mgb2)
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Date
2010-06
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Addis Ababa University
Abstract
For magnesium diboride (MgB2), some of the superconducting properties that have been
studied are summarized. The energy dispersion relation is determined and it is used to
determine the electronic thermal conductivity of MgB2. From that energy function, the
expression for the electronic heat capacity of magnesium diboride in normal state has
been determined. The general expression of the electronic thermal conductivity for MgB2
in normal state is found. Then, by taking the energy gap parameter in to account the
electronic thermal conductivity has been computed for the superconducting state of our
material; that is below the transition temperature. Then, the electronic thermal
conductivity of magnesium diboride has been plotted as a function of temperature with in
the superconducting state. Moreover, the electrical conductivity of MgB2 is calculated
and the Wiedemann-Franz law is checked for normal state of a material. Finally, the
general expression for electronic thermal conductivity of MgB2 is determined in K -
Space
Key Words: Magnesium diboride, thermal conductivity, superconducting state
Description
Keywords
Magnesium Diboride, Thermal Conductivity, Superconducting State