Journal
PHYSICAL REVIEW LETTERS
Volume 89, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.89.187002
Keywords
-
Categories
Ask authors/readers for more resources
The study of the anisotropic superconductor MgB2 using a combination of scanning tunneling microscopy and spectroscopy reveals two distinct energy gaps at Delta(1)=2.3 meV and Delta(2)=7.1 meV at 4.2 K. Different spectral weights of the partial superconducting density of states are a reflection of different tunneling directions in this multiband system. Temperature evolution of the tunneling spectra follows the BCS scenario [Phys. Rev. Lett. 3, 552 (1959)] with both gaps vanishing at the bulk T-c. The data confirm the importance of Fermi-surface sheet dependent superconductivity in MgB2 proposed in the multigap modelLiu et al. [Phys. Rev. Lett. 87, 087005 (2001)].
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available