scholarly journals Kondo lattices with inequivalent local moments: Competitive versus cooperative Kondo screening

2011 ◽  
Vol 84 (7) ◽  
Author(s):  
Adel Benlagra ◽  
Lars Fritz ◽  
Matthias Vojta
1979 ◽  
Vol 40 (C2) ◽  
pp. C2-204-C2-206 ◽  
Author(s):  
M. Shiga ◽  
Y. Nakamura
Keyword(s):  

2000 ◽  
Vol 61 (5) ◽  
pp. 3604-3609 ◽  
Author(s):  
D. L. Sisson ◽  
S. G. Doettinger ◽  
A. Kapitulnik ◽  
R. Liang ◽  
D. A. Bonn ◽  
...  

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
G. T. D. Pedrosa ◽  
Joelson F. Silva ◽  
E. Vernek
Keyword(s):  

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
Eduardo Mendive-Tapia ◽  
Manuel dos Santos Dias ◽  
Sergii Grytsiuk ◽  
Julie B. Staunton ◽  
Stefan Blügel ◽  
...  
Keyword(s):  

2021 ◽  
Vol 126 (13) ◽  
Author(s):  
X. Lou ◽  
T. L. Yu ◽  
Y. H. Song ◽  
C. H. P. Wen ◽  
W. Z. Wei ◽  
...  

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
S. Chibani ◽  
D. Farina ◽  
P. Massat ◽  
M. Cazayous ◽  
A. Sacuto ◽  
...  

AbstractWe report the evolution of nematic fluctuations in FeSe1−xSx single crystals as a function of Sulfur content x across the nematic quantum critical point (QCP) xc ~ 0.17 via Raman scattering. The Raman spectra in the B1g nematic channel consist of two components, but only the low energy one displays clear fingerprints of critical behavior and is attributed to itinerant carriers. Curie–Weiss analysis of the associated nematic susceptibility indicates a substantial effect of nemato-elastic coupling, which shifts the location of the nematic QCP. We argue that this lattice-induced shift likely explains the absence of any enhancement of the superconducting transition temperature at the QCP. The presence of two components in the nematic fluctuations spectrum is attributed to the dual aspect of electronic degrees of freedom in Hund’s metals, with both itinerant carriers and local moments contributing to the nematic susceptibility.


2016 ◽  
Vol 93 (7) ◽  
Author(s):  
Genta Kawaguchi ◽  
Mitsuhiko Maesato ◽  
Tokutaro Komatsu ◽  
Tatsuro Imakubo ◽  
Hiroshi Kitagawa

2014 ◽  
Vol 89 (21) ◽  
Author(s):  
Zhenyu Wang ◽  
Delong Fang ◽  
Qiang Deng ◽  
Huan Yang ◽  
Cong Ren ◽  
...  
Keyword(s):  

1989 ◽  
Vol 166 ◽  
Author(s):  
D. D. Johnson ◽  
J. B. Staunton ◽  
B. L. Györffy ◽  
F. J. Pinski ◽  
G. M. Stocks

ABSTRACTWe have developed an ab-initio method for calculating the static response functions in substitutional alloys. For magnetic alloys, in addition to the nuclear diffuse scattering, a contribution to the alloy diffuse scattering intensities results from the response of the local moments to changes in the ‘local’ chemical environment (i.e. ∂μi/∂cj). We present results of firstprinciples calculations of these ‘local’ response functions in magnetic alloys. These response functions, which may be directly compared to neutron-scattering and Mößbauer experiments, are derived via a mean-field statistical mechanical description of compositional fluctuations in alloys. The statistical averages are performed via the Korringa-Kohn-Rostoker coherent potential approximation, which incorporates the electronic structure of the high-temperature, chemically disordered state. As a first application of the theory, we have investigated the environmental dependence of the moments in NiFe alloys and FeV alloys and multilayers. We compare our results with experiments on bulk alloys and multilayers. Also, a comparison is made to a set of first-principle ‘supercell’ calculations. Although preliminary, the results demonstrate the utility of these response functions for investigating the effects of changes in the chemical environment on the alloy moments and for aiding experimental interpretation in other multilayer systems that are less experimentally amenable than FeV.


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