scholarly journals Field-induced spin-density wave beyond hidden order in URu2Si2

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
W. Knafo ◽  
F. Duc ◽  
F. Bourdarot ◽  
K. Kuwahara ◽  
H. Nojiri ◽  
...  
2018 ◽  
Vol 536 ◽  
pp. 457-460 ◽  
Author(s):  
W. Knafo ◽  
D. Aoki ◽  
G.W. Scheerer ◽  
F. Duc ◽  
F. Bourdarot ◽  
...  

2018 ◽  
Vol 3 (4) ◽  
pp. 39 ◽  
Author(s):  
Sergei Mukhin

An emergence of magnetic boson of instantonic nature, that provides a Cooper-‘pairing glue’, is considered in the repulsive ‘nested’ Hubbard model of superconducting cuprates. It is demonstrated that antiferromagnetic instantons of a spin density wave type may have negative energy due to coupling with Cooper pair condensate. A set of Eliashberg like equations is derived and solved self-consistently, proving the above suggestion. An instantonic propagator plays the role of the Green function of the pairing ‘glue’ boson. Simultaneously, the instantons defy condensation of the mean-field spin-density wave (SDW) order. We had previously demonstrated in analytical form that periodic chain of instanton-anti-instanton pairs along the axis of Matsubara time has zero scattering cross section for weakly perturbing external probes, like neutrons, etc., thus representing a ‘hidden order’. Hence, the two competing orders, superconducting and antiferromagnetic, may coexist (below some T c ) in the form of the superconducting order coupled to ‘hidden’ instantonic one. This new picture is discussed in relation with the mechanism of high temperature superconductivity.


1999 ◽  
Vol 09 (PR10) ◽  
pp. Pr10-247-Pr10-249 ◽  
Author(s):  
B. Korin-Hamzic ◽  
M. Basletić ◽  
N. Francetić ◽  
A. Hamzić ◽  
K. Bechgaard

2013 ◽  
Vol 88 (13) ◽  
Author(s):  
Sangwon Oh ◽  
A. M. Mounce ◽  
Jeongseop A. Lee ◽  
W. P. Halperin ◽  
C. L. Zhang ◽  
...  

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