scholarly journals Impurity effects on spin dynamics in magnetic and superconducting iron pnictides and chalcogenides

2016 ◽  
Vol 254 (1) ◽  
pp. 1600162 ◽  
Author(s):  
M. A. Surmach ◽  
P. Y. Portnichenko ◽  
J. T. Park ◽  
J. A. Rodriguez-Rivera ◽  
D. L. Sun ◽  
...  
Keyword(s):  
Spin Dynamics ◽  
Iron Pnictides ◽  
Impurity Effects ◽  
Pnictides And Chalcogenides

scholarly journals Electron Correlation and Spin Dynamics in Iron Pnictides and Chalcogenides

2013 ◽  
Vol 449 ◽  
pp. 012025 ◽  
Author(s):  
Rong Yu ◽  
Qimiao Si ◽  
Pallab Goswami ◽  
Elihu Abrahams
Keyword(s):  
Electron Correlation ◽  
Spin Dynamics ◽  
Iron Pnictides ◽  
Pnictides And Chalcogenides

scholarly journals Theory of Two-Magnon Raman Scattering in Iron Pnictides and Chalcogenides

2011 ◽  
Vol 106 (6) ◽  
Author(s):  
C.-C. Chen ◽  
C. J. Jia ◽  
A. F. Kemper ◽  
R. R. P. Singh ◽  
T. P. Devereaux
Keyword(s):  
Raman Scattering ◽  
Iron Pnictides ◽  
Pnictides And Chalcogenides

scholarly journals Nonlocal correlations in iron pnictides and chalcogenides

2020 ◽  
Vol 102 (3) ◽  
Author(s):  
Shinibali Bhattacharyya ◽  
Kristofer Björnson ◽  
Karim Zantout ◽  
Daniel Steffensen ◽  
Laura Fanfarillo ◽  
...  
Keyword(s):  
Iron Pnictides ◽  
Nonlocal Correlations ◽  
Pnictides And Chalcogenides

Investigation of Fluctuating Diamagnetism and Spin Dynamics in SmFeAsO1-xFx Superconductors

2010 ◽  
Vol 75 ◽  
pp. 141-146 ◽  
Author(s):  
Giacomo Prando ◽  
Pietro Carretta ◽  
Alessandro Lascialfari ◽  
Attilio Rigamonti ◽  
Samuele Sanna ◽  
...  
Keyword(s):  
Transition Temperature ◽  
Nmr Spectroscopy ◽  
Superconducting Transition Temperature ◽  
Spin Dynamics ◽  
Magnetic Coupling ◽  
Iron Pnictides ◽  
Superconducting Transition ◽  
Squid Magnetometry ◽  
Conduction Electrons ◽  
Underdoped Cuprates

The superconducting iron-pnictides SmFeAsO1-xFx (x = 0.15 and x = 0.2) are studied by means of 19F-NMR spectroscopy and SQUID magnetometry. Fluctuating diamagnetism above Tc is briefly examined, stressing the analogy with the phenomenology in underdoped cuprates. The 19F relaxation rate allows us to infer an indirect magnetic coupling between Sm3+ moments, possibly involving conduction electrons in FeAs bands, with no appreciable effects on crossing the superconducting transition temperature. A comparison between the superconducting samples and the insulating SmOF, often present as spurious phase in SmFeAsO1-xFx pnictides, is also carried out. Relevant differences in the spin dynamics features are found.

scholarly journals Validity of the local approximation in iron pnictides and chalcogenides

2017 ◽  
Vol 95 (19) ◽  
Author(s):  
Patrick Sémon ◽  
Kristjan Haule ◽  
Gabriel Kotliar
Keyword(s):  
Local Approximation ◽  
Iron Pnictides ◽  
Pnictides And Chalcogenides
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