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Article
Open AccessFormation of As-As Interlayer Bonding in the collapsed tetragonal phase of NaFe2As2 under pressure
NaFe2As2 is investigated experimentally using powder x-ray diffraction and Raman spectroscopy at pressures up to 23 GPa at room temperature and using ab-initio calculations. The results reveal a pressure-induced ...
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Article
Open AccessElectronic and magnetic phase diagram in KxFe2-ySe2 superconductors
The correlation and competition between antiferromagnetism and superconductivity are one of the most fundamental issues in high temperature superconductors. Superconductivity in high temperature cuprate superc...
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Article
Superconductivity at 5 K in alkali-metal-doped phenanthrene
Organic superconductors have π-molecular orbitals, from which electrons can become delocalized, giving rise to metallic conductivity due to orbital overlap between adjacent molecules. Here we report the discovery...
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Article
A large iron isotope effect in SmFeAsO1 - xF x and Ba1 - xK x Fe2As2
The recent discovery of superconductivity in iron-based oxypnictides with the critical transition temperature (TC) higher than 39 K has generated great excitement. Work to determine the origin of the superconduct...