隧道电子谱的温度修正

由隧道电子谱通过强耦合超导能隙方程反演面求得有效声子谱的过程,要求电子态密度在T→OK条件下测量,否则会存在相当大的误差,所求得的有效声子谱也与真正的谱形偏离很远,本文给出一种校正这个温度效应的方法,可克服这个困难,采用此方法后,即使在T/T_c=0.22的条件下测量隧道谱,也可以得到正确的有效声子谱、λ与μ^*值。 关键词：

A METHOD OF TEMPERATURE CORRECTION FOR ELECTRON TUNNELING SPECTRUM

When the effective phonom spectrum is calculated from the electron tunneling spe-ctrum by invertion of strongly coupled superconducting energy gap equation, the electron density of states must be measured under the condition T→OK. Otherwise the error of the electron density of states and the deviation of effective phonon spectrum from the real one will be very large. In this paper a method is given for correcting this temperature effect, and the above-mentioned difficulty can be overcome. The correct effective phonon spectrum, andλand μ^* values can be obtained by this method using electron tunneling spectrum data measured even at T/T_c=0.22.