542 citations · 3.6k across the 65 of their papers we have counts for
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Multi-band effects in in-plane resistivity anisotropy of strain-detwinned disordered Ba(FeRu)As
E. C. Blomberg, M. A. Tanatar, A. Thaler +3
In-plane resistivity anisotropy was measured in strain-detwinned as-grown and partially annealed samples of isovalently-substituted ($0<x \l…
Giant microwave absorption in fine powders of superconductors
G. Csősz, B. G. Márkus, A. Jánossy +8
Enhanced microwave absorption, larger than that in the normal state, is observed in fine grains of type-II superconductors (MgB and KC) for magnetic fields as small…
Effect of biaxial strain on the phase transitions of Ca(Fe1-xCox)2As2
A. E. Böhmer, A. Sapkota, A. Kreyssig +5
We study the effect of applied strain as a physical control parameter for the phase transitions of Ca(Fe1-xCox)2As2 using resistivity, magnetization, x-ray diffraction and 57Fe Mös…
Coexistence of antiferromagnetic and ferromagnetic spin correlations in Ca(Fe1-xCox)2As2 revealed by 75As nuclear magnetic resonance
J. Cui, P. Wiecki, S. Ran +3
Recent nuclear magnetic resonance (NMR) measurements revealed the coexistence of stripe-type antiferromagnetic (AFM) and ferromagnetic (FM) spin correlations in both the hole- and…
Nodeless multiband superconductivity in stoichiometric single crystalline CaKFeAs
Kyuil Cho, A. Fente, S. Teknowijoyo +9
Measurements of the London penetration depth and tunneling conductance in single crystals of the recently discovered stoicheometric, iron - based superconductor, CaKFeAs (C…
Combined effects of Sr substitution and pressure on the ground states in CaFeAs
S. Knöner, E. Gati, S. Köhler +7
We present a detailed study of the combined effects of Sr substitution and hydrostatic pressure on the ground-state properties of CaFeAs. Measurements of the electrical res…
Competing Magnetic Fluctuations in Iron Pnictide Superconductors: Role of Ferromagnetic Spin Correlations Revealed by NMR
P. Wiecki, B. Roy, D. C. Johnston +3
In the iron pnictide superconductors, theoretical calculations have consistently shown enhancements of the static magnetic susceptibility at both the stripe-type antiferromagnetic…
Effect of electron irradiation on superconductivity in single crystals of Ba(FeRu)As (0.24)
R. Prozorov, M. Kończykowski, M. A. Tanatar +5
A single crystal of isovalently substituted Ba(FeRu)As () was sequentially irradiated with 2.5 MeV electrons up to a maximum dose of $2.1 \times 10^{1…
Crossover from spin-waves to diffusive spin excitations in underdoped Ba(FeCo)As
G. S. Tucker, R. M. Fernandes, D. K. Pratt +12
Using inelastic neutron scattering, we show that the onset of superconductivity in underdoped Ba(FeCo)As coincides with a crossover from well-defined spin…
Non-conventional superconducting fluctuations in Ba(Fe1-xRhx)2As2 iron-based superconductors
L. Bossoni, L. Romanò, P. C. Canfield +1
We measured the static uniform spin susceptibility of Ba(FeRh)As iron-based superconductors, over a broad range of doping () and magnetic…
Evidence of unconventional low-frequency dynamics in the normal phase of Ba(Fe1-xRhx)2As2 iron-based supercondutors
L. Bossoni, P. Carretta, W. P. Halperin +4
This work presents 75As NMR spin echo decay rate (1/T2) measurements in Ba(Fe1-xRhx)2As2 superconductors, for 0.041 < x < 0.094. It is shown that 1/T2 increases upon cooling, in th…
Magnetic and superconducting phase diagrams in ErNi2B2C
J. A. Galvis, M. Crespo, I. Guillamón +5
We present measurements of the superconducting upper critical field Hc2(T) and the magnetic phase diagram of the superconductor ErNi2B2C made with a scanning tunneling microscope (…
Magnetic excitations in underdoped Ba(Fe1-xCox)2As2 with x=0.047
G. S. Tucker, R. M. Fernandes, H. -F. Li +8
The magnetic excitations in the paramagnetic-tetragonal phase of underdoped Ba(Fe0.953Co0.047)2As2, as measured by inelastic neutron scattering, can be well described by a phenomen…
Effects of transition metal substitutions on the incommensurability and spin fluctuations in BaFe2As2 by elastic and inelastic neutron scattering
M. G. Kim, J. Lamsal, T. W. Heitmann +17
The spin fluctuation spectra from nonsuperconducting Cu-substituted, and superconducting Co-substituted, BaFe2As2 are compared quantitatively by inelastic neutron scattering measur…
What controls the phase diagram and superconductivity in Ru substituted BaFeAs?
R. S. Dhaka, Chang Liu, R. M. Fernandes +8
We use high resolution angle-resolved photoemission to study the electronic structure of the iron based high-temperature superconductors Ba(FeRu)As as a functio…
Anisotropic magnetism, resistivity, London penetration depth and magneto-optical imaging of superconducting K0.80Fe1.76Se2 single crystals
R. Hu, K. Cho, H. Kim +6
Single crystals of K0.80Fe1.76Se2.02 were suscessfully grown from a ternary solution. We show that although crystals form when cooling a near stoichiometric melt, crystals are actu…
As NMR of Ba(FeCo)As in High Magnetic Field
Sangwon Oh, A. M. Mounce, S. Mukhopadhyay +7
The superconducting state of an optimally doped single crystal of Ba(FeCo)As was investigated by As NMR in high magnetic fields from 6.4 T to 28 T.…
Resistivity scaling in 1111 iron-pnictide superconductors
E. Arushanov, S. Levcenko, G. Fuchs +1
We show that the zero field normal-state resistivity above Tc for various levels of electron doping - both for LaO1-xFxFeAs (La-1111) and SmO1-xFxFeAs (Sm-1111) members of the 1111…
Magnetic ordering and structural distortion in Ru doped BaFe2As2 single crystals studied by Neutron and X-ray diffraction
M. G. Kim, D. K. Pratt, G. E. Rustan +8
We present a systematic investigation of the antiferromagnetic ordering and structural distortion for the series of Ba(Fe{1-x}Ru{x})2As2 compounds (0 <= x <= 0.246). Neutron and x-…
Physical and magnetic properties of Ba(FeRu)As single crystals
A. Thaler, N. Ni, A. Kracher +3
Single crystals of Ba(FeRu)As, , have been grown and characterized by structural, magnetic and transport measurements. These measurements show that the…
-axis charge gap and its critical point in the heavily doped Ba(FeCo)As
M. A. Tanatar, N. ~Ni, A. Thaler +3
Temperature-dependent inter-plane resistivity, , was used to characterise the normal state of the iron-arsenide superconductor Ba(FeCo)As over a broad d…
London penetration depth in Ba(FeT)As (T=Co, Ni) superconductors irradiated with heavy ions
H. Kim, R. T. Gordon, M. A. Tanatar +8
Irradiation with Pb ions was used to study the effect of disorder on the in-plane London penetration depth, , in single crystals of Ba(FeT)As (T=Co, Ni).…
Paramagnetic Spin Correlations in CaFe2As2 Single Crystals
S. O. Diallo, D. K. Pratt, R. M. Fernandes +13
Magnetic correlations in the paramagnetic phase of CaFe2As2 (T_N=172 K) have been examined by means of inelastic neutron scattering from 180 K (~ 1.05 T_N) up to 300 K (~1.8 T_N).…
Doping dependence of heat transport in the iron-arsenide superconductor Ba(FeCo)As: from isotropic to strongly -dependent gap structure
M. A. Tanatar, J. P. Reid, H. Shakeripour +7
The temperature and magnetic field dependence of the in-plane thermal conductivity of the iron-arsenide superconductor Ba(FeCo)As was measured down to $T \s…