Neutron spin resonance as a probe of the superconducting energy gap of BaFe1.9Ni0.1As2 superconductors
نویسندگان
چکیده
Jun Zhao,1 Louis-Pierre Regnault,2 Chenglin Zhang,1 Miaoying Wang,1 Zhengcai Li,3 Fang Zhou,3 Zhongxian Zhao,3 Chen Fang,4 Jiangping Hu,4 and Pengcheng Dai1,3,5,* 1Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996-1200, USA 2Institut Nanosciences et Cryogénie, SPSMS-MDN, CEA-Grenoble, F-38054 Grenoble Cedex 9, France 3Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China 4Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA 5Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA Received 18 November 2009; revised manuscript received 19 April 2010; published 12 May 2010
منابع مشابه
Inelastic neutron-scattering measurements of a three-dimensional spin resonance in the FeAs-based BaFe1.9Ni0.1As2 superconductor.
We use inelastic neutron scattering to study magnetic excitations of the FeAs-based superconductor BaFe1.9Ni0.1As2 above and below its T_{c} (=20 K). In addition to gradually open a spin gap at the in-plane antiferromagnetic ordering wave vector (1, 0, 0), the effect of superconductivity is to form a three-dimensional resonance with clear dispersion along the c axis. The intensity of the resona...
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Neutron scattering is proved to be a vital probe in unveiling the magnetic properties of high temperature superconductors (HTSC). Detailed information about the energy and momentum dependence of the magnetic dynamics of HTSC have been obtained directly by this technique. Over the past decade by improving the crystal growth methods, large and high quality single crystals of HTSC, which are ess...
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