Direct evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy

Details Direct evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy Direct evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy

2001-04-25

arxiv.org/abs/cond-mat/0104489v1

Physics

Condensed Matter

Superconductivity

4 pages in RevTeX format (3 Figures) submitted to PRL

Scientific paper

10.1103/PhysRevLett.87.177006

We study the new binary intermetallic superconductor MgB2 using high-resolution photo-emission spectroscopy. The superconducting-state spectrum measured at 5.4 K shows a coherent peak with a shoulder structure, in sharp contrast to that expected from a simple isotropic-gap opening. The spectrum can be well reproduced using the weighted sum of two Dynes functions with the gap sizes of 1.7 and 5.6 meV. Temperature-dependent study shows that both gaps close at the bulk transition temperature. These results provide spectroscopic evidence for a multiple gap of MgB2.

Affiliated with

Also associated with

No associations

Rating

Direct evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy 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 Direct evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct evidence for a multiple superconducting gap in MgB2 from high-resolution photoemission spectroscopy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-647834