138 citations · 291 across the 7 of their papers we have counts for
6 papers · 1 filter
Evidence for multiple gaps in specific heat of LiFeAs crystals
F. Wei, F. Chen, K. Sasmal +5
The zero-field specific heat of LiFeAs was measured on several single crystals selected from a bulk sample. A sharp Delta Cp/Tc anomaly of approximately 20 mJ/(mole x K^2) was obse…
The superconductor KxSr(1-x)Fe2As2: Normal state and superconducting properties
B. Lv, M. Gooch, B. Lorenz +3
The normal state and superconducting properties are investigated in the phase diagram of K_xSr_{1-x}Fe_2As_2 for 0<x<1. The ground state upper critical field, H_{c2}(0), is extrapo…
The Synthesis and Characterization of LiFeAs and NaFeAs
C. W. Chu, F. Chen, M. Gooch +7
The newest homologous series of superconducting As-pnictides, LiFeAs (Li111) and NaFeAs (Na111) have been synthesized and investigated. Both crystallize with the layered tetragonal…
A negative dielectric constant in nano-particle materials under an electric field at very low frequencies
C. W. Chu, F. Chen, J. Shulman +4
The significance of a negative dielectric constant has long been recognized. We report here the observation of a field-induced large negative dielectric constant of aggregates of o…
Suppression of Superconductivity in YBCO/LCMO Superlattices
F. Chen, B. Gorshunov, G. Cristiani +2
The competition of superconductivity and magnetism in superlattices composed of alternating YBaCuO and LaCaMnO thin films is investigated us…
Separation Between Antiferromagnetic and Ferromagnetic Transitions in Ru_1-xCu_xSr_2EuCu_2O_8+d
Y. Y. Xue, F. Chen, J. Cmaidalka +2
The macroscopic magnetizations of Ru_1-xCu_xSr_2EuCu_2O_8+d with x between 0 and 0.15 were investigated. A ferromagnet-like transition as well as an antiferromagnet-like transition…