Carbon-substitution effect on the electronic properties of MgB$_2$ single crystals

Details Carbon-substitution effect on the electronic properties of MgB$_2$ single crystals Carbon-substitution effect on the electronic properties of MgB$_2$ single crystals

2003-12-18

arxiv.org/abs/cond-mat/0312458v1

Phys. Rev. B 70, 024504 (2004)

Physics

Condensed Matter

Superconductivity

6 pages, 8 figures

Scientific paper

10.1103/PhysRevB.70.024504

The electronic properties of the carbon substituted MgB$_2$ single crystals are reported. The carbon substitution drops T$_c$ below 2 K. In-plane resistivity shows a remarkable increase in residual resistivity by C-substitution, while the change of in-plane/out-of-plane Hall coefficients is rather small. Raman scattering spectra indicate that the E$_{2g}$-phonon frequency radically hardens with increasing the carbon-content, suggesting the weakening of electron-phonon coupling. Another striking C-effect is the increases of the second critical fields in both in-plane and out-of-plane directions, accompanied by a reduction in the anisotropy ratio. The possible changes in the electronic state and the origin of T$_c$-suppression by C-substitution are discussed.

Affiliated with

Also associated with

No associations

Rating

Carbon-substitution effect on the electronic properties of MgB$_2$ single crystals 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 Carbon-substitution effect on the electronic properties of MgB$_2$ single crystals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbon-substitution effect on the electronic properties of MgB$_2$ single crystals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-307693