Electron tunnelling spectroscopy when first developed was used to extract the electron-phonon spectral density, α 2 F(ν), from superconductive metals. Here, on revisiting the topic, we show that it further allows the direct extraction of more realistic pseudopotentials for such metals. The pseudopotential so extracted has a range of surprising but physically reasonable properties and regenerates the experimentally derived α 2 F(ν) accurately. Freed from most of its long-standing uncertainties, this pseudopotential may find wide application.
|Journal||Journal of Low Temperature Physics|
|Early online date||09 Dec 2011|
|Publication status||Published - 01 Mar 2012|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Materials Science(all)