典型文献
Evolution of electrical conductivity and semiconductor to metal transition of iron oxides at extreme conditions
文献摘要：
Iron oxides are widely found as ores in Earth's crust and are also important constituents of its interiors.Their poly-morphism,composition changes,and electronic structures play essential roles in controlling the structure and geodynamic properties of the solid Earth.While all-natural occurring iron oxides are semiconductors or insulators at ambient pressure,they start to metalize under pressure.Here in this work,we review the electronic conductivity and metallization of iron oxides under high-pressure conditions found in Earth's lower mantle.We summarize that the metallization of iron oxides is generally controlled by the pressure-induced bandgap closure near the Fermi level.After metallization,they possess much higher electrical and thermal conductivity,which will facilitate the thermal convection,support a more stable and thicker D"layer,and formulate Earth's magnetic field,all of which will constrain the large-scale dynamos of the mantle and core.
文献关键词：
中图分类号：
作者姓名：
Yukai Zhuang;Qingyang Hu
作者机构：
Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China;Center for High Pressure Science and Technology Advanced Research(HPSTAR),Beijing 100094,China
文献出处：
引用格式：
[1]Yukai Zhuang;Qingyang Hu-.Evolution of electrical conductivity and semiconductor to metal transition of iron oxides at extreme conditions)[J].中国物理B（英文版）,2022(08):103-108
A类：
metalize
B类：
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AB值：
0.619537
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