نتایج جستجو برای: iron based superconductor
تعداد نتایج: 3065996 فیلتر نتایج به سال:
The pointlike impurity scattering is studied for a superconductor with different pairing symmetries based on a minimal two band model proposed by S. Raghu et al. [Phys. Rev. B 77, R220503 (2008)], and the self-consistent Bogoliubov-de Gennes equations. Two intragap resonance peaks are found at or near the nonmagnetic impurity site for a typical sx2y2 symmetry and strong scattering potentials. S...
By using a two-step method, we successfully synthesized the iron based new superconductor LaFeAsO0.9F0.1−δ. The resistive transition curves under different magnetic fields were measured, leading to the determination of the upper critical field Hc2(T ) of this new superconductor. The value of Hc2 at zero temperature is estimated to be about 50 Tesla roughly. In addition, the Hall effect and magn...
Phase transition of solid-state materials is a fundamental research topic in condensed matter physics, materials science and geophysics. It has been well accepted and widely proven that isostructural compounds containing different cations undergo same pressure-induced phase transitions but at progressively lower pressures as the cation radii increases. However, we discovered that this conventio...
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...
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