Publications (6)
Structural collapse and superconductivity in rare earth-doped CaFe2As2
S. R. Saha, N. P. Butch, T. Drye +6
Aliovalent rare earth substitution into the alkaline earth site of CaFe2As2 single-crystals is used to fine-tune structural, magnetic and electronic properties of this iron-based s…
Superconductivity at 23 K in Pt doped BaFe2As2 single crystals
S. R. Saha, T. Drye, K. Kirshenbaum +3
We report superconductivity in single crystals of the new iron-pnictide system BaFe1.9Pt0.1As2 grown by a self-flux solution method and characterized via x-ray, transport, magnetic…
Spin-state transition in the Fe-pnictides
H. Gretarsson, S. R. Saha, T. Drye +7
We report a Fe Kβx-ray emission spectroscopy study of local magnetic moments in the rare-earth doped iron pnictide Ca_{1-x}RE_xFe_2As_2 (RE=La, Pr, and Nd). In all samples studied…
Role of electron-electron interactions in the charge dynamics of rare-earth-doped CaFe2As2
Zhen Xing, T. J. Huffman, Peng Xu +8
We have investigated the charge dynamics and the nature of many-body interactions in La- and Pr- doped CaFe2As2. From the infrared part of the optical conductivity, we discover tha…
Separation of antiferromagnetism and high-temperature superconductivity in CaLaFeAs under pressure
Shanta R. Saha, T. Drye, S. K. Goh +9
We report the effect of applied pressures on magnetic and superconducting order in single crystals of the aliovalent La-doped iron pnictide material CaLaFeAs$_{…
Enhancement of the Superconducting Transition Temperature under Pressure in Rare-Earth Doped CaLaFeAs (x=0.27)
Swee K. Goh, Lina E. Klintberg, J. M. Silver +5
We report measurements of the pressure dependence of the superconducting transition temperature T_c in single crystal samples of the rare-earth doped superconductor CaLa$_…