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Transport properties and anisotropy of Rb0.8Fe2Se2 single crystals
Chun-Hong Li, Bing Shen, Fei Han +2
Single crystals of Rb{0.8}Fe2Se2 are successfully synthesized with the superconducting transition temperatures T_c{onset}= 31 K and T_c{zero}= 28 K. A clear anomaly of resistivity…
Static magnetic order of SrAOFeAs (A = Sc and V) revealed by local probes
J. Munevar, D. R. Sanchez, M. Alzamora +10
Static magnetic order of quasi two-dimensional FeAs compounds Sr4A2O6-xFe2As2, with A = Sc and V, has been detected by 57Fe Moessbauer and muon spin relaxation (μSR) spectroscopies…
Anomalous Meissner effect in pnictide superconductors
R. Prozorov, M. A. Tanatar, Bing Shen +4
The Meissner effect has been studied in Ba(Fe0.926Co0.074)2As2 and Ba0.6K0.4Fe2As2 single crystals and compared to well known, type-II superconductors LuNi2B2C and V3Si. Whereas fl…
Observation of anisotropic diamagnetism above the superconducting transition in iron-pnictide Ba_(1-x)K_xFe2As2 single crystals due to thermodynamic fluctuations
J. Mosqueira, J. D. Dancausa, F. Vidal +5
High resolution magnetization measurements performed in a high quality Ba_(1-x)K_xFe2As2 single crystal allowed to determine the diamagnetism induced above the superconducting tran…
Precision Microwave Electrodynamic Measurements of K- and Co-doped BaFeAs
J. S. Bobowski, J. C. Baglo, James Day +10
We have studied the microwave electrodynamics of single crystal iron-based superconductors BaKFeAs (hole-doped, 30 K) and Ba(Fe$_…
Flux-dynamics associated with the Second Magnetisation Peak in iron-pnictide Ba_{1-x}K_xFe_2As_2
S. Salem-Sugui, L. Ghivelder, A. D. Alvarenga +7
We report on isofield magnetic relaxation data on a single crystal of with superconducting transition temperature = 32.7 K which exhibit the so called fi…