437 citations · 1.2k across the 18 of their papers we have counts for
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Nematicity in LaFeAsOF
C. Hess, H. Grafe, A. Kondrat +6
Orbital ordering has recently emerged as another important state in iron based superconductors, and its role for superconductivity as well as its connection to magnetic order and o…
Pr magnetism and its interplay with the Fe spin density wave in PrFeAsO
U. Stockert, N. Leps, L. Wang +4
We have studied the magnetism of the Pr3+ ions in PrFeAsO_1-xF_x (x = 0; 0.15) and its interaction with the Fe magnetic order (for x = 0). Specific heat data confirm the presence o…
Hole-doping in BaFeAs: The case of BaNaFeAs single crystals
S. Aswartham, M. Abdel-Hafiez, D. Bombor +11
Single crystals of BaNaFeAs with = 0, 0.25, 0.35, 0.4 were grown using a self-flux high temperature solution growth technique. The superconducting and norma…
Phase diagram of iron-arsenide superconductors Ca(Fe1-xCox)2As2 (0 <= x <= 0.2)
L. Harnagea, S. Singh, G. Friemel +9
Platelet-like single crystals of the Ca(Fe1-xCox)2As2 series having lateral dimensions up to 15 mm and thickness up to 0.5 mm were obtained from the high temperature solution growt…
Scaling of normal-state transport properties of 1111 iron-pnictide superconductors
E. Arushanov, C. Hess, G. Behr +6
We show that the zero field normal-state resistivity above Tc for various levels of electron doping-both for underdoped, optimally, and overdoped LaO1-xFxFeAs, i.e. (x=0.05-0.075 a…
Unusual Nernst effect and spin density wave precursors in superconducting
Agnieszka Kondrat, Günter Behr, Bernd Büchner +1
The Nernst effect has recently proven as a sensitive probe for detecting unusual normal state properties of unconventional superconductors. Here we present a systematic study of th…
Critical current and vortex dynamics in single crystals of Ca(FeCo)As
A. K. Pramanik, L. Harnagea, S. Singh +6
We investigate the critical current density and vortex dynamics in single crystals of Ca(FeCo)As ( = 0.051, 0.056, 0.065, and 0.073). The samples exhibit d…
Time of life as it is in LiFeAs
A. A. Kordyuk, V. B. Zabolotnyy, D. V. Evtushinsky +7
The time of life of fermionic quasiparticles, the distribution of which in the momentum-energy space can be measured by angle resolved photoemission (ARPES), is the first quantity…
Growth and characterization of epitaxial LuNi2B2C thin films on MgO single crystals
T. Niemeier, R. Hühne, A. Köhler +3
Biaxially textured LuNi2BC thin films with Tc up to 15.8 K and a residual resistivity ratio up to 15 have been prepared. The films were deposited on MgO(110) substrates using pulse…
Interplay of Rare Earth and Iron magnetism in RFeAsO with R = La, Ce, Pr, and Sm: A muon spin relaxation study and symmetry analysis
H. Maeter, H. Luetkens, Yu. G. Pashkevich +11
We report zero field muon spin relaxation (muSR) measurements on RFeAsO with R = La, Ce, Pr, and Sm. We study the interaction of the FeAs and R (rare earth) electronic systems in t…
Thermal expansion of LaFeAsO: Evidence for high-temperature fluctuations
L. Wang, U. Kohler, N. Leps +8
We present measurements of the thermal expansion coefficient alpha of polycrystalline LaFeAsO1-xFx (x <= 0.1). The magnetic and structural transitions of the samples with x <= 0.04…
Synthesis and physical properties of
Agnieszka Kondrat, Jorge Enrique Hamann-Borrero, Norman Leps +9
We have prepared the newly discovered Fe-based superconducting material () in polycrystalline form and have investigated the samples by mean…
The electronic phase diagram of the LaO1-xFxFeAs superconductor
H. Luetkens, H. -H. Klauss, M. Kraken +16
The competition of magnetic order and superconductivity is a key element in the physics of all unconventional superconductors, e.g. in high-transition-temperature cuprates 1, heavy…
Upper critical field, penetration depth, and depinning frequency of the novel high-temperature superconductor LaFeAsOF studied by microwave surface impedance
A. Narduzzo, M. S. Grbić, M. Požek +10
Temperature and magnetic field dependent measurements of the microwave surface impedance of superconducting LaFeAsOF (\Tc 26K) reveal a very large upper c…