Contrasting impurity scattering and pair-breaking effects by doping Mn and Zn in Ba0.5K0.5Fe2As2
نویسندگان
چکیده
Peng Cheng,1 Bing Shen,1 Jiangping Hu,1,2 and Hai-Hu Wen1,* 1National Laboratory for Superconductivity, Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190, China 2Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA Received 11 January 2010; revised manuscript received 3 May 2010; published 25 May 2010
منابع مشابه
Superconducting Gap Symmetry of LaFeP(O, F) Observed by Impurity Doping Effect
We have investigated Mn, Co and Ni substitution effects on polycrystalline samples of LaFePO0.95F0.05 by resistivity and magnetoresistance measurements. In LaFe1-xMxPO0.95F0.05 (M = Mn, Co and Ni), the superconducting transition temperature (Tc) monotonously decreases with increasing the impurity doping level of x. There is a clear difference of Tc suppression rates among Mn, Co and Ni doping c...
متن کاملProgress in nonmagnetic impurity doping studies on Fe-based superconductors
We review the progress of nonmagnetic impurity doping studies on Fe-based superconductors. On the theoretical side, two highly promising candidates for the pairing symmetry order parameter, i.e. the multi-gap s++ and s± wave models, have been proposed but continuously debated. The debate arises because of the complex gap structure and exceptional magnetic and metallic behaviors of Fe-based supe...
متن کاملروتنوکوپراتها: میدان رقابت ابررسانایی و مغناطیس
We have compared the structural, electrical, and magnetic properties of Ru(Gd1.5-xPrx)Ce0.5Sr2Cu2O10-δ (Pr/Gd samples) with x = 0.0, 0.01, 0.03, 0.033, 0.035, 0.04, 0.05, 0.06, 0.1 and RuGd1.5(Ce0.5-xPrx)Sr2Cu2O10-δ (Pr/Ce samples) with x = 0.0, 0.01, 0.03, 0.05, 0.08, 0.1, 0.15, 0.2 prepared by the standard solid-state reaction technique with RuGd1.5(GdxCe0.5-x) Sr2Cu2O10-δ (Gd/Ce samples) wi...
متن کاملمطالعه تاثیر آلایش و اثر اندازه دانهها بر خواص ساختاری، الکتریکی و مغناطومقاومت منگنایتها
In this paper after introduction of manganites, we have studied the effect of particle size and doping on structural, magnetic and magnetoresistance of LSMO manganite samples. The magnetoresistance measurements show that, by decreasing the particle size LFMR increases. Also the results show that the LFMR increases at low doping levels and decreases at high doping levels. The spin dependent tun...
متن کاملEffect of structural distortions on the magnetism of doped spin - Peierls
The chemical selectivity and great sensitivity of the Extended X-ray Absorption Spectroscopy technique allowed the determination, in the paramagnetic phase, of the structural distortions induced by doping in the spin-Peierls CuGeO3 compound. The distorted environments were analyzed as a function of concentration, magnetic nature of impurity and the substitution site (Ni, Mn and Zn impurities on...
متن کامل