Elementary energy bands in crystalline solids
Elementary energy bands in crystalline solids
复制标题
晶体固体中的基本能带
DOI：
10.1209/epl/i2000-00300-9
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发表时间：
2000
期刊：
影响因子：
1.8
通讯作者：
J. Zak
中科院分区：
文献类型：
--
作者：
L. Michel;J. Zak
固体中的基本能带的定义概括了简单能带和复合能带的概念。基本能带的所有能量分支都是相连的。随着基本能带中能量分支的连通性，建立了不可避免的简并的新概念，其中交叉点可以移动但不能移除。这种简并性不依赖于势的特定形状，并且存在于某些给定空间群对称性的所有晶体中。
Elementary energy bands in solids are defined generalizing the notion of simple and composite energy bands. All energy branches of elementary energy bands are connected. Following the connectivity of the energy branches in elementary energy bands, a new notion of unavoidable degeneracy is established, for which the crossings can be moved but not removed. This degeneracy does not depend on the particular shape of the potential and is present in all crystals of some given space group symmetry.