scholarly journals Local spin fluctuations in iron-based superconductors:Se77andRb87NMR measurements on Tl0.47Rb0.34Fe1.63Se2

2011 ◽  
Vol 84 (22) ◽  
Author(s):  
Long Ma ◽  
G. F. Ji ◽  
Jia Dai ◽  
J. B. He ◽  
D. M. Wang ◽  
...  
Keyword(s):  
Spin Fluctuations ◽  
Local Spin ◽  
Iron Based

Proximity effect sandwiches containing local spin fluctuations

1984 ◽  
Vol 56 (5-6) ◽  
pp. 441-460 ◽  
Author(s):  
I. M. Tang ◽  
S. Roongkeadsakoon
Keyword(s):  
Proximity Effect ◽  
Spin Fluctuations ◽  
Local Spin

scholarly journals Pressure-induced reconstitution of Fermi surfaces and spin fluctuations in S-substituted FeSe

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
T. Kuwayama ◽  
K. Matsuura ◽  
J. Gouchi ◽  
Y. Yamakawa ◽  
Y. Mizukami ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Density Of States ◽  
Spin Fluctuations ◽  
Fermi Surfaces ◽  
Lifshitz Transition ◽  
Different Types ◽  
Iron Based ◽  
Nuclear Magnetic

AbstractFeSe is a unique high-$$T_c$$ T c iron-based superconductor in which nematicity, superconductivity, and magnetism are entangled with each other in the P-T phase diagram. We performed $$^{77}$$ 77 Se-nuclear magnetic resonance measurements under pressures of up to 3.9 GPa on 12% S-substituted FeSe, in which the complex overlap between the nematicity and magnetism are resolved. A pressure-induced Lifshitz transition was observed at 1.0 GPa as an anomaly of the density of states and as double superconducting (SC) domes accompanied by different types of antiferromagnetic (AF) fluctuations. The low-$$T_{\mathrm{c}}$$ T c SC dome below 1 GPa is accompanied by strong AF fluctuations, whereas the high-$$T_{\mathrm{c}}$$ T c SC dome develops above 1 GPa, where AF fluctuations are fairly weak. These results suggest the importance of the $$d_{xy}$$ d xy orbital and its intra-orbital coupling for the high-$$T_{\mathrm{c}}$$ T c superconductivity.

Local spin fluctuations in chemisorption

1976 ◽  
Author(s):  
J. Handler ◽  
J. A. Hertz
Keyword(s):  
Spin Fluctuations ◽  
Local Spin
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