Superconducting gap and electron-phonon interaction in MgB$_2$ thin film studied by point contacts

Details Superconducting gap and electron-phonon interaction in MgB$_2$ thin film studied by point contacts Superconducting gap and electron-phonon interaction in MgB$_2$ thin film studied by point contacts

2001-09-29

arxiv.org/abs/cond-mat/0110006v2

in {\it New Trends in Superconductivity}, ed. by J. F. Annett and S. Kruchinin, (Kluwer Academic Publisher, 2002) NATO Science

Physics

Condensed Matter

Superconductivity

V2. Refs. [17, 23, 24, 34, 40] are added, plain text improvements, 5 pages incl. 4 figures, RevTex4. Presented at the NATO ARW

Scientific paper

The superconducting order parameter and electron-phonon interaction (EPI) in a MgB$_{2}$ c-axis oriented thin film are investigated by point contacts (PCs). Two superconducting gaps $\Delta_{Small}\approx 2.6$ meV and $\Delta_{Large}\approx 7.4$ meV have been established, which fairly well correspond to the theoretical gap ratio 1:3. The reconstructed PC EPI function along c-axis has above 30 meV similarities with the phonon DOS, while a pronounced maximum around 20 meV is resolved pointing out that the low frequency phonon mode can be of importance for pairing. We have estimated the Fermi velocity in MgB$_2$ about 5$\times 10^7$ cm/s.

Affiliated with

Also associated with

No associations

Rating

Superconducting gap and electron-phonon interaction in MgB$_2$ thin film studied by point contacts does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Superconducting gap and electron-phonon interaction in MgB$_2$ thin film studied by point contacts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Superconducting gap and electron-phonon interaction in MgB$_2$ thin film studied by point contacts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-56672