Electronic band structure and Fermi surface of Ag 5 Pb 2 O 6
Electronic band structure and Fermi surface of Ag 5 Pb 2 O 6
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Ag 5 Pb 2 O 6 的电子能带结构和费米面
DOI：
10.1103/physrevb.72.245105
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发表时间：
2005
影响因子：
3.7
通讯作者：
T. Oguchi
中科院分区：
文献类型：
--
作者：
T. Oguchi
我们给出了Ag 5 Pb 2 O 6的电子能带结构，它具有一维链状和二维Kagom e层的层状六角结构.半满的导带显示出极其简单的、单一的、近似自由电子的费米面。导带由Pb-6s $和O-2 p $与Ag-4d和5s $的反键态混合组成。与比热数据相比，费米能处态密度的质量增强预计小得可以忽略不计。计算出的费米速度是一致的小各向异性观察到的输运性质。掺杂对电子结构的影响也进行了讨论。
We present electronic band structure of Ag$_5$Pb$_2$O$_6$ with layered hexagonal structure containing one-dimensional chains and two-dimensional Kagom\'{e} layers of silver. A half-filled conduction band shows extremely simple, single nearly-free-electron-like Fermi surface. The conduction band is composed of an antibonding state of Pb-$6s$ and O-$2p$ mixing with Ag-4d and $5s$. Mass enhancement in the state density at the Fermi energy is expected to be negligibly small by comparing with the specific-heat data. Calculated Fermi velocity is consistent with small anisotropy observed in transport properties. Doping effects on the electronic structure are also discussed.