High-pressure study on MgB2

Article

关键词: SUPERCONDUCTIVITY;    BORON;   

DOI  :  10.1103/PhysRevB.64.012507

来源: SCIE

【 摘 要 】

The hydrostatic pressure effect on the newly discovered superconductor MgB2 has been determined. The transition temperature T-c was found to decrease linearly at a large rate of -1.6 K/GPa, in good quantitative agreement with the ensuing calculated value of -1.4 K/GPa within the BCS framework by Loa and Syassen, using the full-potential linearized augmented plane-wave method. The relative pressure coefficient d In T-c/dp for MgB2 also falls between the known values for conventional sp and d superconductors. The observation, therefore, suggests that electron-phonon interactions play a significant role in the superconductivity of the compound.

【 授权许可】

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