This puts Pb$_{9}$Cu(PO$_4$)$_6$O in an ultra-correlated regime and suggests that, without doping, it is a Mott or charge transfer insulator. If doped such an electronic structure might support flat-band superconductivity or an correlation-enhanced electron-phonon mechanism, whereas a dia...
摘要: 小李是一个IT工程师,工作压力大,经常熬夜,最近口腔溃疡频繁发作,说话,吃饭都疼痛,近一个月来没有一天是不痛的.来医院就诊,问其是否经常喝凉茶,他回答:"对啊,我天天喝凉茶.以前一口腔溃疡,喝凉茶就好.现在没用了,这一个月我都在喝凉茶,可仍然复发,好像步贞率比以前还高."关键词:...