Evidence for two-dimensional nucleation of superconductivity in MgB$_{2}$

Details Evidence for two-dimensional nucleation of superconductivity in MgB$_{2}$ Evidence for two-dimensional nucleation of superconductivity in MgB$_{2}$

2002-01-24

arxiv.org/abs/cond-mat/0201439v1

Physics

Condensed Matter

Superconductivity

5 RevTex pages, 3 PostScript Figures ZIPed in archive Sidoren.zip. Submitted to EuroPhys. Lett. December 3, 2001

Scientific paper

10.1209/epl/i2002-00237-5

According to the crystal structure of MgB$_{2}$ and band structure calculations quasi-two-dimensional (2D) boron planes are responsible for the superconductivity. We report on critical fields and resistance measurements of 30 nm thick MgB$_{2}$ films grown on MgO single crystalline substrate. A linear temperature dependence of the parallel and perpendicular upper critical fields indicate a 3D-like penetration of magnetic field into the sample. Resistivity measurements, in contrast, yield a temperature dependence of fluctuation conductivity above T$_{c}$ which agrees with the Aslamazov-Larkin theory of fluctuations in 2D superconductors. We consider this finding as an experimental evidence of two-dimensional nucleation of superconductivity in MgB$_{2}$.

Affiliated with

Also associated with

No associations

Rating

Evidence for two-dimensional nucleation of superconductivity in MgB$_{2}$ 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 Evidence for two-dimensional nucleation of superconductivity in MgB$_{2}$, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for two-dimensional nucleation of superconductivity in MgB$_{2}$ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-341511