Expulsion of Magnetic Flux Lines from Growing Superconducting Core of a   Quark Star and The Possibility of Mullins-Sekerka Interface Instability
  The expulsion of magnetic flux lines from a growing superconducting core of a quark star has been investigated using the idea of impurity diffusion in molten alloys. The possibility of Mullins-Sekerka normal-superconducting interface instability has also been studied. 
Somenath Chakrabarty