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5 papers
Transient Infrared Photoreflectance Study of Superconducting MgB2: Evidence for Multiple Gaps and Interband Scattering
R. P. S. M. Lobo, J. J. Tu, Eun-Mi Choi +4
We studied the far-infrared reflectance of superconducting MgB2 in and out of equilibrium using pulsed synchrotron radiation. The equilibrium data can be described by a single ener…
Effect of High Energy Heavy Ion Irradiation on c-axis Oriented MgB2 Films
R. J. Olsson, W. K. Kwok, G. Karapetrov +8
We report on the transport, magnetization, and scanning tunneling spectroscopy measurements on c-axis oriented thin films of MgB2 irradiated with high energy heavy ions of uranium…
Optical studies of charge dynamics in c-axis oriented superconducting MgB2 films
J. J. Tu, G. L. Carr, V. Perebeinos +7
Temperature dependent optical conductivities and DC resistivity of c-axis oriented superconducting (Tc = 39.6 K) MgB2 films (~ 450 nm) have been measured. The normal state ab-plane…
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…
Universal scaling of Hall resistivity in clean and moderately clean limits for Hg- and Tl-based superconductors
W. N. Kang, Wan-Seon Kim, S. J. Oh +5
The mixed-state Hall resistivity and the longitudinal resistivity in HgBa_{2}CaCu_{2}O_{6}, HgBa_{2}Ca_{2}Cu_{3}O_{8}, and Tl_{2}Ba_{2}CaCu_{2}O_{8} thin films have been investigat…