Author： Xiao-Dong Zhang Guo-Zhi Fan Cheng-Lin Zhang Xiu-Nian Jing Jian-Lin Luo
Publisher： IOP Publishing
ISSN： 0256-307X
Source： Chinese Physics Letters, Vol.29, Iss.1, 2012-01, pp. : 17401-17404
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
75As nuclear magnetic resonance (NMR) was measured for Ba(Fe1−xNix)2As2 single crystals with x = 0.05 and x = 0.1 under 0 and 1.5 GPa, respectively. For the optimal doped sample with x = 0.05, the superconducting transition temperature, Tc, is strongly suppressed from 18 to 5 K, while for the over-doped sample with x = 0.1, it is turned from a superconducting ground state to a disordered paramagnetic state under 1.5 GPa. Our experimental results show that the antiferromagnetic spin fluctuations, as well as Tc, are suppressed. The experimental results can be explained with the two-band model. As a result, the electronic band is shifted downwards with an increase in pressure, and the electrons become the dominant carriers in the system.
Related content
Magnetic properties of (FeIn2S4)1 −
By Bodnar I. Novikova M. Trukhanov S.
Semiconductors, Vol. 47, Iss. 5, 2013-05 ,pp. :
Access to resources
Recommend
Debye temperature and magnetic ordering in K
By Reissner M. Steiner W. Wernisch J. Boller H.
Hyperfine Interactions, Vol. 169, Iss. 1-3, 2006-04 ,pp. :
Vortex structure and magnetic properties of BaFe2(As1−xPx)2 single crystals
Journal of Physics: Conference Series , Vol. 507, Iss. 1, 2014-05 ,pp. :
Access to resources