G. H. Cao

Superconductivity induced by Ni doping in BaFe2As2 single crystals

A series of 122 phase BaFe2−xNixAs2xa0(x=0, 0.055, 0.096, 0.18 and 0.23) single crystals was grown by the self-flux method and a dome-like Ni doping dependence of the superconducting transition temperature was discovered. The transition temperature Tcon reaches a maximum of 20.5u2009K at x=0.096, and it drops to below 4u2009K as x≥0.23. The negative thermopower in the normal state indicates that the electron-like charge carrier indeed dominates in this system. This Ni-doped system provides another example of superconductivity induced by electron doping in the 122 phase.

Effects of cobalt doping and phase diagrams of LFe1-xCox AsO (L=La and Sm)

Chemical doping has recently become a very important strategy to induce superconductivity especially in complex compounds. Distinguished examples include Ba-doped La

Optical investigations of the normal and superconducting states reveal two electronic subsystems in iron pnictides

_2

Effects of magnetic ordering on dynamical conductivity: Optical investigations of EuFe2As2 single crystals

CuO

Electrodynamics of electron doped iron-pnictide superconductors: Normal state properties

_4

Electron-phonon coupling and the charge gap of spin-density wave iron-pnictide materials from quasiparticle relaxation dynamics

(the first high temperature superconductor), K-doped BaBiO

Optical Properties of the Iron-arsenic Superconductor BaFe1.85Co0.15As2

_3

Phonon Anomaly in BaFe2As2

, K-doped C

Effects of Ru substitution on electron correlations and Fermi-surface dimensionality in Ba(Fe1-xRux)(2)As-2

_{60}

Optical study of the metal-insulator transition in CuIr 2 S 4 crystals

and Na