Experimental Evidence of Cage Conduction Bands in Superconducting Cement 12CaO$\cdot$7Al${}_2$O${}_3$

J. A. McLeod, A. Buling, E. Z. Kurmaev +6

Natural 12CaO$\cdot$7Al${}_2$O${}_3$ (C12A7) is a wide bandgap insulator, but conductivity can be realized by introducing oxygen deficiency. Currently, there are two competing models e…