204 citations · 758 across the 12 of their papers we have counts for
12 papers
Critical flux pinning and enhanced upper-critical-field in magnesium diboride films
M. N. Kunchur, C. Wu, D. H. Arcos +5
We have conducted pulsed transport measurements on c-axis oriented magnesium diboride films over the entire relevant ranges of magnetic field $0 \alt H \alt H_{c2}$ (where \hcu is…
Two-band Effects in the Angular Dependence of Hc2 of MgB2 Single Crystals
A. Rydh, U. Welp, A. E. Koshelev +11
The angular dependence of the upper critical field Hc2 of MgB2 single crystals is studied at various temperatures by means of specific heat and transport measurements in magnetic f…
Surface Contribution to the Superconducting Properties of MgB2 Single Crystals
A. Rydh, U. Welp, J. M. Hiller +8
We demonstrate direct evidence of possible surface superconductivity on small, well-shaped MgB2 single crystals. Transport measurements in the range H < 1.6 Hc2^c, where Hc2^c is t…
Microstructure and pinning properties of hexagonal-disc shaped single crystalline MgB2
C. U. Jung, J. Y. Kim, P. Chowdhury +6
We synthesized hexagonal-disc-shaped MgB2 single crystals under high-pressure conditions and analyzed the microstructure and pinning properties. The lattice constants and the Laue…
Universal scaling of the Hall resistivity in MgB2 superconductors
W. N. Kang, Hyeong-Jin Kim, Eun-Mi Choi +3
The mixed-state Hall resistivity and the longitudinal resistivity in superconducting MgB2 thin films have been investigated as a function of the magnetic field over a wide range of…
High current-carrying capability in c-axis-oriented superconducting MgB2 thin films
Hyeong-Jin Kim, W. N. Kang, Eun-Mi Choi +3
In high-quality c-axis-oriented MgB2 thin films, we observed high critical current densities (Jc) of 16 MA/cm^2 at 15 K under self fields comparable to those of cuprate high-temper…
Superconducting properties of well-shaped MgB2 single crystal
Kijoon H. P. Kim, Jae-Hyuk Choi, C. U. Jung +11
We report measurements of the transport and the magnetic properties of high-quality, sub-millimeter-sized MgB2 single crystals with clear hexagonal-plate shapes. The low-field magn…
In-plane Hall effect in c-axis-oriented MgB2 thin films
W. N. Kang, Hyeong-Jin Kim, Eun-Mi Choi +4
We have measured the longitudinal resistivity and the Hall resistivity in the ab-plane of highly c-axis-oriented MgB2 thin films. In the normal state, the Hall coefficient (R_H) be…
Fluctuation Magnetoconductance in MgB2
W. N. Kang, Kijoon H. P. Kim, Hyeong-Jin Kim +8
We report fluctuation magnetoconductance in a MgB2 superconductor prepared under a high pressure of 3 GPa. This excess magnetoconductance, , follows the three-dimensional sc…
Effect of sintering temperature under high pressure in the uperconductivity for MgB2
C. U. Jung, Min-Seok Park, W. N. Kang +4
We report the effect of the sintering temperature on the superconductivity of MgB2 pellets prepared under a high pressure of 3 GPa. The superconducting properties of the non-heated…
Hole carrier in MgB_{2} characterized by Hall Measurements
W. N. Kang, C. U. Jung, Kijoon H. P. Kim +7
The longitudinal resistivity rho_{xx} and Hall coefficient R_H were measured for MgB2 sintered under high pressure. We found that R_H is positive like cuprate high-Tc superconducto…
Prominent bulk pinning effect in the MgB_2 superconductor
Mun-Seog Kim, C. U. Jung, Min-Seok Park +4
We report the magnetic-field dependence of the irreversible magnetization of the recently discovered binary superconductor MgB. For the temperature region of , the…