scholarly journals Effect of gap anisotropy on the spin resonance peak in the superconducting state of iron-based materials

2018 ◽  
Vol 98 (10) ◽  
Author(s):  
M. M. Korshunov
Keyword(s):  
Superconducting State ◽  
Resonance Peak ◽  
Spin Resonance ◽  
Gap Anisotropy ◽  
Iron Based

Interplay Of Superconductivity And Magnetic Excitations In Multiorbital Systems

2015 ◽  
Vol 10 (2) ◽  
pp. 83-90
Author(s):  
Maxim Korshunov ◽  
Yuliya Togushova
Keyword(s):  
Experimental Data ◽  
Magnetic Susceptibility ◽  
Order Parameter ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Resonance Peak ◽  
Superconducting Order Parameter ◽  
Spin Resonance ◽  
Iron Based ◽  
The Impact

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.

scholarly journals Neutron Spin Resonance in the 112-Type Iron-Based Superconductor

2018 ◽  
Vol 120 (13) ◽  
Author(s):  
Tao Xie ◽  
Dongliang Gong ◽  
Haranath Ghosh ◽  
Abyay Ghosh ◽  
Minoru Soda ◽  
...  
Keyword(s):  
Neutron Spin ◽  
Spin Resonance ◽  
Iron Based

Doping Induced Gap Anisotropy in Iron-Based Superconductors: a Point-Contact Andreev Reflection Study of BaFe 2−x Ni x As 2 Single Crystals

2015 ◽  
Vol 32 (7) ◽  
pp. 077401 ◽  
Author(s):  
Jun Zhu ◽  
Zhao-Sheng Wang ◽  
Zhen-Yu Wang ◽  
Xing-Yuan Hou ◽  
Hui-Qian Luo ◽  
...  
Keyword(s):  
Single Crystals ◽  
Andreev Reflection ◽  
Point Contact ◽  
Iron Based Superconductors ◽  
Gap Anisotropy ◽  
Iron Based

scholarly journals Shifting of the magnetic-resonance peak to lower energy in the superconducting state of underdoped YBa 2 Cu 3 O 6.8

1997 ◽  
Vol 38 (4) ◽  
pp. 313-318 ◽  
Author(s):  
P Bourges ◽  
L. P Regnault ◽  
Y Sidis ◽  
J Bossy ◽  
P Burlet ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Superconducting State ◽  
Lower Energy ◽  
Resonance Peak

scholarly journals Role of Interactions in the Energy of the Spin Resonance Peak in Fe-Based Superconductors

2019 ◽  
Vol 289 ◽  
pp. 212-217 ◽  
Author(s):  
Yuliya N. Togushova ◽  
Maxim Korshunov
Keyword(s):  
Resonance Energy ◽  
Energy Scale ◽  
Resonance Peak ◽  
Characteristic Energy ◽  
Iron Based Superconductors ◽  
Hubbard Interaction ◽  
First Case ◽  
Spin Resonance ◽  
Spin Response

We consider the spin response within the five-orbital model for iron-based superconductors and study two cases: equal and unequal gaps in different bands. In the first case, the spin resonance peak in the superconducting state appears below the characteristic energy scale determined by the gap magnitude, 2ΔL. In the second case, the energy scale corresponds to the sum of smaller and larger gap magnitudes, ΔL+ΔS. Increasing the values of the Hubbard interaction and the Hund's exchange, we observe a shift of the spin resonance energy to lower frequencies.

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