Abstract
We calculated the capacitance between a pair of thin and slightly separated slabs (electrodes) by using first-principles approaches with the enforced Fermi-energy difference method. The calculated capacitance exhibited several quantum effects, which were successfully understood by relating them to the density of states of the electrodes and the effective and variable interelectrode distance. The present work is an indispensable step towards exhaustive and systematic first-principles investigations of the capacitors whose electrodes are composed of a series of transition-metal oxides.
- Received 13 April 2006
DOI:https://doi.org/10.1103/PhysRevB.74.035408
©2006 American Physical Society