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Hydrostatic Pressure Dependence of the Superconducting and Structural Properties of MgB2
J. S. Schilling, J. D. Jorgensen, D. G. Hinks +4
In this paper we report parallel in situ neutron powder diffraction and Tc(P) measurements versus pressure on the same MgB2 sample in a He-gas apparatus to 0.6 GPa; in addition, we…
MgB2 tunnel junctions and 19 K low-noise dc superconducting quantum interference devices
Y. Zhang, D. Kinion, J. Chen +3
Point contact junctions made from two pieces of MgB2 can be adjusted to exhibit either superconductor-insulator-superconductor (SIS) or superconductor-normal metal-superconductor (…
Identification and Characterization of Two Energy Gaps in Superconducting MgB2 by Specific-Heat Measurements
R. A. Fisher, F. Bouquet, N. E. Phillips +2
This paper reports specific-heat measurements on superconducting MgB2 in magnetic fields to 9 T. In zero magnetic field the data can be fitted to a two-gap model, which is a genera…
Phenomenological two-gap model for the specific heat of MgB_2
F. Bouquet, Y. Wang, R. A. Fisher +4
We show that the specific heat of the superconductor MgB_2 (MgB2) in zero field, for which significant non-BCS features have been reported, can be fitted, essentially within experi…
Dependence of the Superconducting Transition Temperature of MgB2 on Pressure to 20 GPa
S. Deemyad, J. S. Schilling, J. D. Jorgensen +1
The dependence of Tc on nearly hydrostatic pressure has been measured for an isotopically pure (11B) MgB2 sample in a helium-loaded diamond-anvil-cell to nearly 20 GPa. Tc decrease…
The Dependence of Tc on Hydrostatic Pressure in Superconducting MgB2
T. Tomita, J. J. Hamlin, J. S. Schilling +2
The dependence of Tc on hydrostatic (He-gas) pressure has been determined to 0.7 GPa. We find that Tc decreases linearly and reversibly under pressure at the rate dTc/dP = -1.11 +-…