Electronic structure, photoemission, inverse photoemission, and x-ray emission spectra of superconducting Ba1-xKxBiO3.
Electronic structure, photoemission, inverse photoemission, and x-ray emission spectra of superconducting Ba1-xKxBiO3.
复制标题
超导 Ba1-xKxBiO3 的电子结构、光电发射、反光电发射和 X 射线发射光谱。
DOI：
10.1103/physrevb.40.4442
复制
发表时间：
1989
期刊：
影响因子：
--
通讯作者：
Redinger
中科院分区：
文献类型：
--
作者：
Hamada;Massidda;Freeman;Redinger
在局域密度近似下，采用全势线性缀加平面波方法计算了BaBiO {sub 3}的电子结构，并采用简单的刚性带模型考虑了K元素的合金化效应.在严格的Muffin-tin近似下讨论了超导电性的电子-声子机制。在这种情况下，从铜酸盐高{ital T}{sub {ital c}}材料的电子结构的差异进行了详细阐述。光电发射，逆光电发射，和X射线发射光谱与实验进行比较，以检查这些激发的单粒子图片的有效性。
The electronic structure of BaBiO{sub 3} is calculated by using the full-potential linearized augmented-plane-wave method in the local-density approximation, and the alloying effect of K additions is considered using the simple rigid-band model. The electron-phonon mechanism for the superconductivity is discussed within the rigid muffin-tin approximation. In this context, the difference of the electronic structure from the cuprate high-{ital T}{sub {ital c}} materials is elucidated in detail. Photoemission, inverse photoemission, and x-ray emission spectra are compared with experiment to check the validity of the single-particle picture for these excitations.