期刊
SCIENTIFIC REPORTS
卷 4, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep05778
关键词
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资金
- MEXT of Japan [22540489, 20103001, 20103005, 19310083]
- RIKEN iTHES Project
- Grants-in-Aid for Scientific Research [20103001, 20103005, 22540489, 19310083] Funding Source: KAKEN
It was discovered that a peak appears near a pressure of P-c=10 GPa in the electrical conductivity of ice VII as measured through impedance spectroscopy in a diamond anvil cell (DAC) during the process of compression from 2 GPa to 40 GPa at room temperature. The activation energy for the conductivity measured in the cooling/heating process between 278 K and 303 K reached a minimum near P-c. Theoretical modelling and molecular dynamics simulations suggest that the origin of this unique peak is the transition of the major charge carriers from the rotational defects to the ionic defects.
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