Two-band superconductivity in MgB{sub 2}.
Journal Article
·
· Phys. Rev. Lett.
The study of the anisotropic superconductor MgB2 using a combination of scanning tunneling microscopy and spectroscopy reveals two distinct energy gaps at {Delta}{sub 1}=2.3 meV and {Delta}{sub 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 with both gaps vanishing at the bulk T{sub c}. The data confirm the importance of Fermi-surface sheet dependent superconductivity in MgB{sub 2} proposed in the multigap model by Liu et al.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 949582
- Report Number(s):
- ANL/MSD/JA-42213; PRLTAO; TRN: US1003584
- Journal Information:
- Phys. Rev. Lett., Vol. 89, Issue 18 ; Oct. 28, 2002; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- ENGLISH
Similar Records
Momentum-dependent scanning tunneling spectroscopy in MgB{sub 2}.
MgB{sub 2}: directional tunneling two-band superconductivity.
Momentum dependence of the superconducting gap and in-gap states in multiband superconductor
Conference
·
Wed Jul 31 00:00:00 EDT 2002
·
OSTI ID:949582
+4 more
MgB{sub 2}: directional tunneling two-band superconductivity.
Conference
·
Sat Feb 01 00:00:00 EST 2003
· Supercond. Sci. Technol.
·
OSTI ID:949582
+7 more
Momentum dependence of the superconducting gap and in-gap states in multiband superconductor
Journal Article
·
Mon Jun 29 00:00:00 EDT 2015
· Physical Review. B, Condensed Matter and Materials Physics
·
OSTI ID:949582
+3 more