Neutron spin resonance as a probe of the superconducting energy gap ofBaFe1.9Ni0.1As2superconductors

Neutron spin resonance as a probe of the superconducting energy gap of BaFe1.9Ni0.1As2 superconductors

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 Acad...

Anisotropic neutron spin resonance in superconducting BaFe1.9Ni0.1As2

O. J. Lipscombe,1,* Leland W. Harriger,1 P. G. Freeman,2 M. Enderle,2 Chenglin Zhang,1 Miaoying Wang,1 Takeshi Egami,1,3,4 Jiangping Hu,5,6 Tao Xiang,6,7 M. R. Norman,8 and Pengcheng Dai1,4,6,† 1Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996-1200, USA 2Institut Laue-Langevin, 6, rue Jules Horowitz, BP 156, 38042 Grenoble Cedex 9, France 3Department ...

Anisotropy of Energy Gap in Superconducting Aluminum

Spin-resonance modes of the spin-gap magnet TlCuCl3

Three kinds of magnetic resonance signals were detected in crystals of the spin-gap magnet TlCuCl3. First, we have observed the microwave absorption due to the excitation of the transitions between the singlet ground state and the excited triplet states. This mode has the linear frequency-field dependence corresponding to the previously known value of the zero-field spin-gap of 156 GHz and to t...

Resonance Raman Study of the Superconducting Gap and Low Energy Excitations in Tl2Ba2CuO6+ delta Superconductors.

Moonsoo Kang,1 G. Blumberg,1,2 M. V. Klein,1 and N. N. Kolesnikov3 1Department of Physics, and Science and Technology Center for Superconductivity, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 2Institute of Chemical Physics and Biophysics, Rävala 10, Tallinn EE0001, Estonia 3Institute for Solid State Physics, Russian Academy of Science, Chernogolovka, Moscow Region, 142 43...