Magnesium diboride superconductors
Canfield, Paul C. Department of Physics and Astronomy, Ames Laboratory, Iowa State University, Ames, Iowa.
- BCS theory
- Isotope effect in MgB2
- Extreme example of BCS superconductivity
- Normal-state resistivity of MgB2
- Critical fields and current densities
- Promise of MgB2 as a superconductor
- Synthesis of MgB2
- Links to Primary Literature
Magnesium diboride, MgB2, superconducts below a critical temperature of 39 K (−389°F). It is a simple binary compound made of two of the more abundant elements in the Earth's crust. Although the compound has been known for decades, superconductivity in MgB2 was discovered only in 2001. Since then, MgB2 has become one of the most promising superconducting materials because of its high critical temperature, low normal-state resistivity, and relatively high critical field and critical current density, which can be further increased by the addition of impurities.
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