MgB_(2)的经验有效声子谱及电声耦合常数的计算

Approximate effective phonon spectrum with calculation of electron-phonon coupling constant in MgB_2

对MgB_2有效声子谱实验曲线进行数值取点,通过这些点对已知图形进行分段拟合,从而得到了经验有效声子谱,并计算出电声耦合常数等于0.81。

Dots from effective phonon spectrum of MgB2 were taken, these data was sectionally fitted to the known figure and got the experiential eliashberg function. Finally calculated out the E-P coupling constant =0.81.