300 citations · 574 across the 5 of their papers we have counts for
5 papers
Thermally-activated current transport in MgB_2 films
S. Patnaik, A. Gurevich, S. D. Bu +3
Thermally-activated flux flow (TAFF) resistivity above the irreversibility field is reported for two different c-axis textured MgB_2 superconducting films. Transport measurements a…
Very high upper critical fields in MgB2 produced by selective tuning of impurity scattering
A. Gurevich, S. Patnaik, V. Braccini +16
We report a significant enhancement of the upper critical field of different samples alloyed with nonmagnetic impurities. By studying films and bulk polycrystals w…
MgB2 Energy Gap Determination by Scanning Tunneling Spectroscopy
T. W. Heitmann, S. D. Bu, D. M. Kim +13
We report scanning tunneling spectroscopy (STS) measurements of the gap properties of both ceramic MgB2 and c-axis oriented epitaxial MgB2 thin films. Both show a temperature depen…
Synthesis and Properties of c-axis Oriented Epitaxial MgB2 Thin Films
S. D. Bu, D. M. Kim, J. H. Choi +10
We report the growth and properties of epitaxial MgB2 thin films on (0001) Al2O3 substrates. The MgB2 thin films were prepared by depositing boron films via RF magnetron sputtering…
Electronic anisotropy, magnetic field-temperature phase diagram and their dependence on resistivity in c-axis oriented MgB2 thin films
S. Patnaik, L. D. Cooley, A. Gurevich +16
An important predicted, but so far uncharacterized, property of the new superconductor MgB2 is electronic anisotropy arising from its layered crystal structure. Here we report on t…