s±-like spin resonance in the iron-based nodal superconductor BaFe2(As0.65P0.35)2observed using inelastic neutron scattering

2011 ◽  
Vol 84 (14) ◽  
Author(s):  
Motoyuki Ishikado ◽  
Yuki Nagai ◽  
Katsuaki Kodama ◽  
Ryoichi Kajimoto ◽  
Mitsutaka Nakamura ◽  
...  
2015 ◽  
Vol 10 (2) ◽  
pp. 83-90
Author(s):  
Maxim Korshunov ◽  
Yuliya Togushova

We have considered the impact of the nontrivial superconducting order parameter on the magnetic susceptibility within the multiorbital model for the iron-based materials. The formation of the spin-resonance peak is demonstrated and its connection to the experimental data on the inelastic neutron scattering is discussed.


2010 ◽  
Vol 81 (10) ◽  
Author(s):  
Jinsheng Wen ◽  
Guangyong Xu ◽  
Zhijun Xu ◽  
Zhi Wei Lin ◽  
Qiang Li ◽  
...  

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Yu Song ◽  
Weiyi Wang ◽  
Chongde Cao ◽  
Zahra Yamani ◽  
Yuanji Xu ◽  
...  

AbstractMagnetic fluctuations is the leading candidate for pairing in cuprate, iron-based, and heavy fermion superconductors. This view is challenged by the recent discovery of nodeless superconductivity in CeCu2Si2, and calls for a detailed understanding of the corresponding magnetic fluctuations. Here, we mapped out the magnetic excitations in superconducting (S-type) CeCu2Si2 using inelastic neutron scattering, finding a strongly asymmetric dispersion for E ≲ 1.5 meV, which at higher energies evolves into broad columnar magnetic excitations that extend to E ≳ 5 meV. While low-energy magnetic excitations exhibit marked three-dimensional characteristics, the high-energy magnetic excitations in CeCu2Si2 are almost two-dimensional, reminiscent of paramagnons found in cuprate and iron-based superconductors. By comparing our experimental findings with calculations in the random-phase approximation,we find that the magnetic excitations in CeCu2Si2 arise from quasiparticles associated with its heavy electron band, which are also responsible for superconductivity. Our results provide a basis for understanding magnetism and superconductivity in CeCu2Si2, and demonstrate the utility of neutron scattering in probing band renormalization in heavy fermion metals.


RSC Advances ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 2608-2617 ◽  
Author(s):  
Robbie Warringham ◽  
Alisha L. Davidson ◽  
Paul B. Webb ◽  
Robert P. Tooze ◽  
Russel A. Ewings ◽  
...  

Inelastic neutron scattering is used to examine an un-promoted iron based Fischer–Tropsch synthesis catalyst exposed to ambient pressure CO hydrogenation at 623 K for defined periods of time-on-stream (3, 6, 12 and 24 h).


2020 ◽  
Vol 392 ◽  
pp. 197-208
Author(s):  
Alisha L. Davidson ◽  
Emma K. Gibson ◽  
Giannantonio Cibin ◽  
Hendrik van Rensburg ◽  
Stewart F. Parker ◽  
...  

2011 ◽  
Vol 471 (21-22) ◽  
pp. 643-646 ◽  
Author(s):  
M. Ishikado ◽  
K. Kodama ◽  
R. Kajimoto ◽  
M. Nakamura ◽  
Y. Inamura ◽  
...  

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