scholarly journals Exact local correlations in kicked chains

2020 ◽  
Vol 102 (17) ◽  
Author(s):  
Boris Gutkin ◽  
Petr Braun ◽  
Maram Akila ◽  
Daniel Waltner ◽  
Thomas Guhr
Keyword(s):  
Local Correlations

scholarly journals Multi-scale structural analysis of the A-site and oxygen deficient perovskite Sr11Mo4O23

2017 ◽  
Vol 46 (37) ◽  
pp. 12466-12473 ◽  
Author(s):  
Graham King ◽  
Maxim Avdeev ◽  
Ilyas Qasim ◽  
Qingi Zhou ◽  
Brendan J. Kennedy
Keyword(s):  
Crystal Structure ◽  
Structural Analysis ◽  
Multi Scale ◽  
Local Correlations ◽  
A Site

The crystal structure of Sr11Mo4O23 and the local correlations between the disordered sites are examined.

scholarly journals Unravelling local correlations in heavily disordered ferroelectric Sr x Ba1−x Nb2O6

2019 ◽  
Vol 75 (a2) ◽  
pp. e442-e442
Author(s):  
Marek Pasciak ◽  
Petr Ondrejkovic ◽  
Richard Welberry ◽  
Jiri Kulda ◽  
Milos Kopecky ◽  
...  
Keyword(s):  
Local Correlations

scholarly journals Monotone Measures for Non-Local Correlations

2015 ◽  
Vol 61 (9) ◽  
pp. 5185-5208 ◽  
Author(s):  
Salman Beigi ◽  
Amin Gohari
Keyword(s):  
Local Correlations ◽  
Non Local

Distortion-invariant pattern recognition with local correlations

2011 ◽  
Vol 21 (2) ◽  
pp. 188-191 ◽  
Author(s):  
V. Kober ◽  
Saúl Martínez-Díaz ◽  
V. Karnaukhov ◽  
I. A. Ovseyevich
Keyword(s):  
Pattern Recognition ◽  
Local Correlations

scholarly journals Evening out the spin and charge parity to increase $${T}_{c}$$ in $${{\rm{Sr}}}_{2}{{\rm{RuO}}}_{4}$$

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Swagata Acharya ◽  
Dimitar Pashov ◽  
Cédric Weber ◽  
Hyowon Park ◽  
Lorenzo Sponza ◽  
...  
Keyword(s):  
Critical Temperature ◽  
Degrees Of Freedom ◽  
Mean Field Theory ◽  
Mean Field ◽  
Spin Fluctuations ◽  
Charge Fluctuations ◽  
Ab Initio Theory ◽  
Charge Parity ◽  
Local Correlations ◽  
Critical Temperature Tc

AbstractUnconventional superconductivity in $${{\rm{Sr}}}_{2}{{\rm{RuO}}}_{4}$$Sr2RuO4 has been intensively studied for decades. However, the nature of pairing continues to be widely debated. Here we develop a detailed ab initio theory, coupling quasiparticle self-consistent GW approximation with dynamical mean field theory (DMFT), including both local and non-local correlations to address the subtle interplay among spin, charge and orbital degrees of freedom. We report that the superconducting instability has multiple triplet and singlet components. In the unstrained case the triplet eigenvalues are larger than the singlets. Under uniaxial strain, the triplet eigenvalues drop and the singlet components increase. This is concomitant with our observation of spin and charge fluctuations shifting closer to wave-vectors favoring singlet pairing. We identify a complex mechanism where charge fluctuations and spin fluctuations co-operate in the even-parity channel under strain leading to increment in critical temperature (Tc), thus proposing a novel mechanism for pushing the frontier of critical temperature (Tc) in unconventional ‘triplet’ superconductors.

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