نتایج جستجو برای: iron based superconductor
تعداد نتایج: 3065996 فیلتر نتایج به سال:
We investigate the magnetic phase diagram near the upper critical field of KFe_{2}As_{2} by magnetic torque and specific heat experiments using a high-resolution piezorotary positioner to precisely control the parallel alignment of the magnetic field with respect to the FeAs layers. We observe a clear double transition when the field is strictly aligned in the plane and a characteristic upturn ...
Neutron diffraction measurements have been carried out on a single crystal of the iron-based superconductor system SrFe1.92Ni0.08As2. Nitrogen gas sealed in the sample container was found to produce Bragg peaks over a limited range of temperature that were symmetrically positioned around the strongest magnetic Bragg peak in the system, giving the appearance of transition to an incommensurate ma...
The in-plane optical properties of the inhomogeneous iron-chalcogenide superconductor K0.8Fe2−ySe2 with a critical temperature Tc = 31 K have been modeled in the normal state using the Bruggeman effective medium approximation for metallic inclusions in an insulating matrix. The volume fraction for the inclusions is estimated to be 10%; however, they appear to be highly distorted, suggesting a f...
The interplay of structural and electronic phases in iron-based superconductors is a central theme the search for superconducting pairing mechanism. While nematicity, defined as breaking four-fold symmetry triggered by degrees freedom, competing with superconductivity, effect purely orthorhombic order unexplored. Here, using x-ray diffraction (XRD), we reveal new phase an exceptionally high ons...
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