Doping-insensitive density-of-states suppression in polycrystalline iron-based superconductor
نویسندگان
چکیده
منابع مشابه
Correlation-induced self-doping in the iron-pnictide superconductor Ba2Ti2Fe2As4O.
The electronic structure of the iron-based superconductor Ba2Ti2Fe2As4O (Tc(onset)=23.5 K) has been investigated by using angle-resolved photoemission spectroscopy and combined local density approximation and dynamical mean field theory calculations. The electronic states near the Fermi level are dominated by both the Fe 3d and Ti 3d orbitals, indicating that the spacer layers separating diffe...
متن کاملDoping evolution of the anisotropic upper critical fields in the iron-based superconductor Ba1â‹TMxKxFe2As2
In-plane resistivity measurements as a function of temperature and magnetic field up to 35 T with precise orientation within the crystallographic ac plane were used to study the upper critical field Hc2 of the holedoped iron-based superconductor Ba1−xKxFe2As2. Compositions of the samples studied spanned from underdoped x=0.17 (Tc=12 K) and x=0.22 (Tc=20 K), both in the coexistence range of stri...
متن کاملDoping evolution of the anisotropic upper critical fields in the iron-based superconductor Ba1−xKxFe2As2
In-plane resistivity measurements as a function of temperature and magnetic field up to 35 T with precise orientation within the crystallographic ac plane were used to study the upper critical field Hc2 of the holedoped iron-based superconductor Ba1−xKxFe2As2. Compositions of the samples studied spanned from underdoped x=0.17 (Tc=12 K) and x=0.22 (Tc=20 K), both in the coexistence range of stri...
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In this research, we aim to clarify the relationship between the structural distortion due to doping and the superconductivity existence in the FeAs4 structure. For this, we have prepared polycrystalline of NdFeAsO0.8F0.2, NdFeAs0.95Sb0.05O0.8F0.2 and Nd0.99Ca0.01FeAsO0.8F0.2 samples by one-step solid state reaction method. The structural and electrical properties of the samples were characteri...
متن کاملLocal Density of States in Superconductor - Ferromagnetic Hybrid Systems
In this Letter we discuss various properties of the local density of states (DOS) for a superconductor-ferromagnet hybrid system. The DOS is modified at small energies on both sides of the interface. Due to the interplay of superconductivity and ferromagnetism, the local DOS depends on the spin direction. The spin polarization effects extend over a long distance from the interface both in the s...
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ژورنال
عنوان ژورنال: Solid State Communications
سال: 2008
ISSN: 0038-1098
DOI: 10.1016/j.ssc.2008.10.008