Monday, July 25, 2011

Electron-Phonon Coupling at the Tungsten Surface

Another BECNF post here.  At first blush, this may not seem relevant since BECNF doesn't mention this coupling.  I got interested in it because of phonons, as phonons can act as bosons, which are relevant to the theory.

There may also be an objection with respect to Tungsten, since the BECNF is about Ni H systems, not tungsten.

What caught my attention, besides the phonon reference was this quote near the end:
This is an important dissipation channel for energy and will affect chemical reactions at surfaces, such as reactions on catalysts. Another interesting implication is the possibility of an electron-phonon-mediated superconductivity that is confined to the surfaces of metals and has a greatly enhanced critical temperature as compared to ordinary superconductors. [emphasis added]

As I noted before, "cold fusion" has been said to be a surface effect phenomenon.

A closer look at this paper allows another quote that I find interesting:
Since these "many-body" effects are often more prominent in physical systems with less than three dimensions  [ comment: as you would find on the surface] carefully prepared surfaces furnish good two-dimensional test beds for examining these effects in detail.
BCEs in this context probably qualify as a type of "many-body" effects referred to here.

Rossi's catalyst then, could be key.  Maybe that is why it is such a big secret.

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