Structural Quantum Criticality and Superconductivity in Iron-Based Superconductor Ba(Fe1-xCox)2As2
نویسندگان
چکیده
منابع مشابه
Experimental aspects of Alpha, Beta angles distortion on superconductivity in 1111-type Iron-based superconductor
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 کاملEffect of Structural Parameter on Superconductivity of Iron- Based Superconductor FeSe1-xTex
20 IMR KINKEN Research Highlights 2009 Future Energy / Environmental Materials By systematic crystal structure refinements of characteristic superconductor, FeSe1-xTex (x= 0.5, 0.625, 0.75, 0.875) and FeSe by the powder neutron diffraction technique, we studied the relationship between crystal structre and superconductivity. In this work, we found the role of Fe-X network (X; calcogens, pnictog...
متن کاملSimultaneous optimization of spin fluctuations and superconductivity under pressure in an iron-based superconductor.
We present a high-pressure NMR study of the overdoped iron pnictide superconductor NaFe0.94Co0.06As. The low-energy antiferromagnetic spin fluctuations in the normal state, manifest as the Curie-Weiss upturn in the spin-lattice relaxation rate 1/(75)T1T, first increase strongly with pressure but fall again at P>Popt=2.2 GPa. Neither long-ranged magnetic order nor a structural phase transition ...
متن کاملSwitching Magnetism and Superconductivity with Spin-Polarized Current in Iron-Based Superconductor.
We explore a new mechanism for switching magnetism and superconductivity in a magnetically frustrated iron-based superconductor using spin-polarized scanning tunneling microscopy (SPSTM). Our SPSTM study on single-crystal Sr_{2}VO_{3}FeAs shows that a spin-polarized tunneling current can switch the Fe-layer magnetism into a nontrivial C_{4} (2×2) order, which cannot be achieved by thermal excit...
متن کاملMagnetic quantum criticality in the iron pnictides
The prominence of antiferromagnetic ordering in the phase diagram of the iron pnictides naturally raises the question of the relevance of magnetic quantum criticality. We address this issue in the undoped parent compounds using the fact that they are “bad metals.” Localized magnetic moments with frustrating interactions, which model the incoherent electronic excitations, are coupled to the itin...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Physical Society of Japan
سال: 2012
ISSN: 0031-9015,1347-4073
DOI: 10.1143/jpsj.81.024604