Takahiro Muranaka

Superconductivity at 39 K in magnesium diboride

In the light of the tremendous progress that has been made in raising the transition temperature of the copper oxide superconductors (for a review, see ref. 1), it is natural to wonder how high the transition temperature, Tc, can be pushed in other classes of materials. At present, the highest reported values of Tc for non-copper-oxide bulk superconductivity are 33 K in electron-doped CsxRbyC60 (ref. 2), and 30 K in Ba1-xKxBiO3 (ref. 3). (Hole-doped C60 was recently found to be superconducting with a Tc as high as 52 K, although the nature of the experiment meant that the supercurrents were confined to the surface of the C60 crystal, rather than probing the bulk.) Here we report the discovery of bulk superconductivity in magnesium diboride, MgB2. Magnetization and resistivity measurements establish a transition temperature of 39 K, which we believe to be the highest yet determined for a non-copper-oxide bulk superconductor.

Superconductivity at 18 K in Yttrium Sesquicarbide System, Y2C3

In this study, we investigated superconductivity at 18 K in an yttrium sesquicarbide system, Y 2 C 3 , by a magnetization measurement, although this material with a maximum T c of 11.5 K has alread...

Pressure-induced high-Tc superconducting phase in FeSe: Correlation between anion height and Tc

In this study, we performed high-pressure electrical resistivity measurements of polycrystalline FeSe in the pressure range of 1\char21{}16.0 GPa at temperatures of 4\char21{}300 K. A precise evaluation of

Superconductivity in Boron-doped SiC

{T}_{c}

Compressibility of the MgB 2 superconductor

from zero-resistivity temperatures revealed that

Electronic structure of (formula presented)X-ray emission and absorption studies

{T}_{c}

Bonding Nature in MgB2

shows a slightly distorted dome-shaped curve with maximum

Superconductivity in carrier-doped silicon carbide.

{T}_{c}^{\text{offset}}

The superconductivity in Re-B system

(30 K) at 6 GPa. With the application of pressure, the temperature dependence of resistivity above

Soft-phonon-driven superconductivity in CaAlSi as seen by inelastic x-ray scattering

{T}_{c}