Title of article :
Elementary energy bands in crystals are connected
Author/Authors :
Michel، نويسنده , , L. and Zak، نويسنده , , J.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Abstract :
A short review is given of elementary band representations of space groups and correspondingly a definition is presented of elementary energy bands in solids. Using these notions one can conclude that all the branches of an elementary energy band are connected. We present in this chapter a topologically unavoidable degeneracy in the band structure of solids.
Keywords :
Narrow band systems , infinite groups , general topology
Journal title :
Physics Reports
Journal title :
Physics Reports
