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DC Field | Value | Language |
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dc.contributor.author | Kumar, N. | - |
dc.date.accessioned | 2005-12-29T09:26:40Z | - |
dc.date.available | 2005-12-29T09:26:40Z | - |
dc.date.issued | 1995-05-10 | - |
dc.identifier.citation | Current Science, 1995, Vol. 68, p945-946. | en |
dc.identifier.issn | 0011-3891 | - |
dc.identifier.uri | http://hdl.handle.net/2289/981 | - |
dc.description.abstract | The idea of a quantum capacitance is introduced explicitly via the generally valid operational definition based on the quadratic charging energy. The direct quantum capacitance CQ per unit area for a strictly two dimensional metallic bilayer is shown to be l/πα, where α, = the Bohr radius. This calculable quantum capacitance acts in series with the usual classical capacitance Ccl = E /4πd, and is independent of the bilayer spacing d, i.e. it has a universal value. Thus, in most cases CQ >>Ccl and is, therefore, ineffective. However, for the ultrathin bi/multilayers now grown routinely epitaxially, as also for the bi/multilayers inherent to the layered high-T, superconductors, we can have CQ ≤ Ccl making CQ dominant. Some possible observable effects are pointed out. | en |
dc.format.extent | 115610 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | en | en |
dc.publisher | Indian Academy of Sciences, Bangalore, India. | en |
dc.rights | Indian Academy of Sciences, Bangalore, India. | en |
dc.title | A calculable quantum capacitance | en |
dc.type | Article | en |
Appears in Collections: | Research Papers (LAMP) Research Papers (TP) |
Files in This Item:
File | Description | Size | Format | |
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1995 CS V68 p945.pdf | 2p. | 112.9 kB | Adobe PDF | View/Open |
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