33 citations · 65 across the 4 of their papers we have counts for
7 papers
Effect of oxygen incorporation on normal and superconducting properties of MgB2 films
R. K. Singh, Y. Shen, R. Gandikota +3
Oxygen was systematically incorporated in MBE grown MgB2 films using in-situ post-growth anneals in an oxygen environment. Connectivity analysis in combination with measurements of…
Effect of stoichiometry on oxygen incorporation in MgB2 thin films
R K Singh, Y Shen, R Gandikota +2
The amount of oxygen incorporated into MgB2 thin films upon exposure to atmospheric gasses is found to depend strongly on the material's stoichiometry. Rutherford backscattering sp…
Effect of Rb and Cs-doping on superconducting properties of MgB2 thin films
R K Singh, Y Shen, R Gandikota +4
Our Rutherford backscattering spectrometry (RBS) study has found that concentrations up to 7 atomic percent of Rb and Cs can be introduced to a depth of ~700 A in MgB2 thin films b…
MgB2 tunnel junctions with native or thermal oxide barriers
R. K. Singh, R. Gandikota, J. Kim +2
MgB2 tunnel junctions (MgB2/barrier/MgB2) were fabricated using a native oxide grown on the bottom MgB2 film as the tunnel barrier. Such barriers therefore survive the deposition o…
Effect of damage by 2-MeV He ions and annealing on Hc2 in MgB2 thin films
R. Gandikota, R. K. Singh, J. Kim +9
The effect of damage induced by 2-MeV alpha particles, followed by annealing, on the critical temperature (Tc), resistivity, and upper critical field (Hc2), of three MgB2 films mad…
Effect of damage by 2-MeV He ions on the normal and superconducting properties of magnesium diboride
R. Gandikota, R. K. Singh, J. Kim +8
We have studied the effect of damage induced by 2-MeV alpha particles on the critical temperature, Tc, and resistivity of MgB2 thin films. This technique allows defects to be contr…