Evidence of unconventional low-frequency dynamics in the normal phase of Ba(Fe_{1−x}Rh_{x})_{2}As_{2} iron-based superconductors
Articolo
Data di Pubblicazione:
2013
Abstract:
This work presents 75As NMR spin-echo decay rate (1/T2) measurements in Ba(Fe1−xRhx )2As2 superconductors,
for 0.041
their energy barriers are derived. The motion is favored at large Rh content, while it is hindered by the application
of a magnetic field perpendicular to the FeAs layers. The same dynamic is observed in the spin-lattice relaxation
rate, in a quantitatively consistent manner. These results are discussed in the light of nematic fluctuations involving
domain wall motion. The analogies with the behavior observed in the cuprates are also outlined.
for 0.041
their energy barriers are derived. The motion is favored at large Rh content, while it is hindered by the application
of a magnetic field perpendicular to the FeAs layers. The same dynamic is observed in the spin-lattice relaxation
rate, in a quantitatively consistent manner. These results are discussed in the light of nematic fluctuations involving
domain wall motion. The analogies with the behavior observed in the cuprates are also outlined.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
superconduttività
Elenco autori:
Bossoni, Lucia; Carretta, Pietro; W. P., Halperin; S., Oh; A., Reyes; P., Kuhns; P. C., Canfield
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