scholarly journals Spin dynamics of aJ1-J2-Kmodel for the paramagnetic phase of iron pnictides

2012 ◽  
Vol 86 (8) ◽  
Author(s):  
Rong Yu ◽  
Zhentao Wang ◽  
Pallab Goswami ◽  
Andriy H. Nevidomskyy ◽  
Qimiao Si ◽  
...  
Keyword(s):  
Spin Dynamics ◽  
Paramagnetic Phase ◽  
Iron Pnictides

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.

Spin dynamics of triangular lattice antiferromagnetCuFeO2: Crossover from spin-liquid to paramagnetic phase

2009 ◽  
Vol 80 (14) ◽  
Author(s):  
K. Hayashi ◽  
T. Nozaki ◽  
R. Fukatsu ◽  
Y. Miyazaki ◽  
T. Kajitani
Keyword(s):  
Triangular Lattice ◽  
Spin Dynamics ◽  
Paramagnetic Phase ◽  
Spin Liquid

scholarly journals Spin dynamics of aJ1−J2antiferromagnet and its implications for iron pnictides

2011 ◽  
Vol 84 (15) ◽  
Author(s):  
Pallab Goswami ◽  
Rong Yu ◽  
Qimiao Si ◽  
Elihu Abrahams
Keyword(s):  
Spin Dynamics ◽  
Iron Pnictides

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

ANOMALOUS SPIN DYNAMICS IN THE PARAMAGNETIC PHASE OF SPIN GLASSES

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1045-C8-1046
Author(s):  
F. Mezei ◽  
H. Maletta ◽  
B. Farago ◽  
S. M. Shapiro
Keyword(s):  
Spin Glasses ◽  
Spin Dynamics ◽  
Paramagnetic Phase

Spin dynamics of EuS in the paramagnetic phase

1989 ◽  
Vol 40 (7) ◽  
pp. 5036-5041 ◽  
Author(s):  
Ranjan Chaudhury ◽  
B. S. Shastry
Keyword(s):  
Spin Dynamics ◽  
Paramagnetic Phase

scholarly journals Double-exchange magnets: Spin dynamics in the paramagnetic phase

1999 ◽  
Vol 59 (22) ◽  
pp. R14149-R14152 ◽  
Author(s):  
Peter Horsch ◽  
Janez Jaklič ◽  
Frank Mack
Keyword(s):  
Spin Dynamics ◽  
Double Exchange ◽  
Paramagnetic Phase

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

Spin dynamics in the paramagnetic phase ofYBa2Cu3O6.12as seen by Cu NMR

1999 ◽  
Vol 60 (13) ◽  
pp. 9650-9661 ◽  
Author(s):  
R. Pozzi ◽  
M. Mali ◽  
D. Brinkmann ◽  
A. Erb
Keyword(s):  
Spin Dynamics ◽  
Paramagnetic Phase
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