Unconventional normal-state spin dynamics in underdoped high-Tccuprates as a fingerprint of spiral correlations of localized spins and dual localized/itinerant nature of spin fluctuations

2017 ◽  
Vol 95 (12) ◽  
Author(s):  
F. Onufrieva
Keyword(s):  
Normal State ◽  
Spin Dynamics ◽  
Spin Fluctuations ◽  
State Spin

Normal-state spin dynamics in the spin-triplet superconductorSr2RuO4

2001 ◽  
Vol 64 (10) ◽  
Author(s):  
K. Ishida ◽  
H. Mukuda ◽  
Y. Minami ◽  
Y. Kitaoka ◽  
Z. Q. Mao ◽  
...  
Keyword(s):  
Normal State ◽  
Spin Dynamics ◽  
Spin Triplet ◽  
State Spin

scholarly journals Normal-state spin dynamics and temperature-dependent spin-resonance energy in optimally doped BaFe1.85Co0.15As2

2009 ◽  
Vol 6 (3) ◽  
pp. 178-181 ◽  
Author(s):  
D. S. Inosov ◽  
J. T. Park ◽  
P. Bourges ◽  
D. L. Sun ◽  
Y. Sidis ◽  
...  
Keyword(s):  
Normal State ◽  
Spin Dynamics ◽  
Resonance Energy ◽  
Temperature Dependent ◽  
Spin Resonance ◽  
State Spin

scholarly journals Evolution of spin excitations from bulk to monolayer FeSe

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jonathan Pelliciari ◽  
Seher Karakuzu ◽  
Qi Song ◽  
Riccardo Arpaia ◽  
Abhishek Nag ◽  
...  
Keyword(s):  
Quantum Monte Carlo ◽  
Spin Dynamics ◽  
Spin Fluctuations ◽  
Superconducting Transition ◽  
Pairing Mechanism ◽  
Range Magnetic Order ◽  
X Ray Scattering ◽  
Spin Excitations ◽  
Order Of Magnitude ◽  
Long Range Magnetic Order

AbstractIn ultrathin films of FeSe grown on SrTiO3 (FeSe/STO), the superconducting transition temperature Tc is increased by almost an order of magnitude, raising questions on the pairing mechanism. As in other superconductors, antiferromagnetic spin fluctuations have been proposed to mediate SC making it essential to study the evolution of the spin dynamics of FeSe from the bulk to the ultrathin limit. Here, we investigate the spin excitations in bulk and monolayer FeSe/STO using resonant inelastic x-ray scattering (RIXS) and quantum Monte Carlo (QMC) calculations. Despite the absence of long-range magnetic order, bulk FeSe displays dispersive magnetic excitations reminiscent of other Fe-pnictides. Conversely, the spin excitations in FeSe/STO are gapped, dispersionless, and significantly hardened relative to its bulk counterpart. By comparing our RIXS results with simulations of a bilayer Hubbard model, we connect the evolution of the spin excitations to the Fermiology of the two systems revealing a remarkable reconfiguration of spin excitations in FeSe/STO, essential to understand the role of spin fluctuations in the pairing mechanism.

Spin dynamics in theNd2−xCexCuO4system: Estimation of the rate of spin fluctuations

1996 ◽  
Vol 54 (22) ◽  
pp. 16254-16258 ◽  
Author(s):  
Vladimir Chechersky ◽  
Nikolai S. Kopelev ◽  
Amar Nath ◽  
J.-L. Peng ◽  
Richard L. Greene ◽  
...  
Keyword(s):  
Spin Dynamics ◽  
Spin Fluctuations

scholarly journals Pseudogap and Spin Fluctuations in the Normal State of the Electron-Doped Cuprates

2004 ◽  
Vol 93 (14) ◽  
Author(s):  
B. Kyung ◽  
V. Hankevych ◽  
A.-M. Daré ◽  
A.-M. S. Tremblay
Keyword(s):  
Normal State ◽  
Spin Fluctuations
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