Model Calculations for Spin-Density-Wave Instabilities in Itinerant Magnets

1988 ◽  
Vol 147 (1) ◽  
pp. 391-400 ◽  
Author(s):  
R. J. Jelitto
Keyword(s):  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Model Calculations ◽  
Wave Instabilities

scholarly journals Spin density wave instabilities in theNbS2monolayer

2016 ◽  
Vol 93 (9) ◽  
Author(s):  
F. Güller ◽  
V. L. Vildosola ◽  
A. M. Llois
Keyword(s):  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Wave Instabilities

scholarly journals Competing magnetic orders in the superconducting state of heavy-fermion CeRhIn5

2017 ◽  
Vol 114 (21) ◽  
pp. 5384-5388 ◽  
Author(s):  
P. F. S. Rosa ◽  
J. Kang ◽  
Yongkang Luo ◽  
N. Wakeham ◽  
E. D. Bauer ◽  
...  
Keyword(s):  
Spin Density ◽  
Superconducting State ◽  
Heavy Fermion ◽  
Magnetic State ◽  
Applied Pressure ◽  
Density Wave ◽  
Quantum Critical Point ◽  
Spin Density Wave ◽  
Zero Field ◽  
Model Calculations

Applied pressure drives the heavy-fermion antiferromagnet CeRhIn5 toward a quantum critical point that becomes hidden by a dome of unconventional superconductivity. Magnetic fields suppress this superconducting dome, unveiling the quantum phase transition of local character. Here, we show that 5% magnetic substitution at the Ce site in CeRhIn5, either by Nd or Gd, induces a zero-field magnetic instability inside the superconducting state. This magnetic state not only should have a different ordering vector than the high-field local-moment magnetic state, but it also competes with the latter, suggesting that a spin-density-wave phase is stabilized in zero field by Nd and Gd impurities, similarly to the case of Ce0.95Nd0.05CoIn5. Supported by model calculations, we attribute this spin-density wave instability to a magnetic-impurity-driven condensation of the spin excitons that form inside the unconventional superconducting state.

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