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Bismuth displays puzzling superconducting properties. In its crystallineequilibrium phase, it does not seem to superconduct at accessible lowtemperatures. However, in the amorphous phase it displays superconductivity at~ 6 K. Under pressure bismuth has been found to superconduct at Tcs that gofrom 3.9 K to 8.5 K depending on the phase obtained. So the question is: whatelectronic or vibrational changes occur that explains this radicaltransformation in the conducting behavior of this material? In a recentpublication we argue that changes in the density of electronic and vibrationalstates may account for the behavior observed in the amorphous phase withrespect to the crystal. We have now undertaken an ab initio computational studyof the effects of pressure alone maintaining the original crystalline structureand compressing our supercell computationally. From the results obtained weinfer that if the crystal structure remains the same (except for thecontraction), no superconductivity will appear.

Compressed Crystalline Bismuth and Superconductivity-An ab initio computational Simulation