Effects of superconducting fluctuations on the NMR relaxation rateT 1 ?1 of two-dimensional systems aboveT c

1992 ◽  
Vol 89 (5-6) ◽  
pp. 869-884 ◽  
Author(s):  
J�rgen Heym
Keyword(s):  
Nmr Relaxation ◽  
Two Dimensional ◽  
Superconducting Fluctuations

Effect of superconducting fluctuations on63Cu NQR-NMR relaxation in YBa2Cu3O7

1997 ◽  
Vol 19 (8-9) ◽  
pp. 1131-1136 ◽  
Author(s):  
P. Carretta ◽  
A. Rigamonti ◽  
D. V. Livanov ◽  
A. A. Varlamov
Keyword(s):  
Nmr Relaxation ◽  
Superconducting Fluctuations

Pore Structure Evolution of Cemented Paste Backfill Observed with Two-Dimensional NMR Relaxation Correlation Measurements

2021 ◽  
Vol 60 (36) ◽  
pp. 13253-13264
Author(s):  
Neil Robinson ◽  
Razyq Nasharuddin ◽  
Ganhua Luo ◽  
Andy Fourie ◽  
Einar O. Fridjonsson ◽  
...  
Keyword(s):  
Pore Structure ◽  
Nmr Relaxation ◽  
Structure Evolution ◽  
Two Dimensional ◽  
Cemented Paste Backfill ◽  
Paste Backfill

Two-dimensional NMR relaxation studies of apple quality

2008 ◽  
Vol 48 (3) ◽  
pp. 331-340 ◽  
Author(s):  
N. Marigheto ◽  
Luca Venturi ◽  
B. Hills
Keyword(s):  
Nmr Relaxation ◽  
Two Dimensional ◽  
Relaxation Studies ◽  
Apple Quality

Two-Dimensional Vortex Melting in BEDT Organic Superconductors and NMR Relaxation Induced by Vortex Structure Defects

1996 ◽  
Vol 76 (26) ◽  
pp. 4951-4954 ◽  
Author(s):  
H. Mayaffre ◽  
P. Wzietek ◽  
D. Jérome ◽  
S. Brazovskii
Keyword(s):  
Vortex Structure ◽  
Nmr Relaxation ◽  
Organic Superconductors ◽  
Two Dimensional ◽  
Structure Defects

scholarly journals Anomalous spin correlations and excitonic instability of interacting 2D Weyl fermions

Science ◽  
2017 ◽  
Vol 358 (6369) ◽  
pp. 1403-1406 ◽  
Author(s):  
Michihiro Hirata ◽  
Kyohei Ishikawa ◽  
Genki Matsuno ◽  
Akito Kobayashi ◽  
Kazuya Miyagawa ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Nmr Relaxation ◽  
Spin Fluctuations ◽  
Two Dimensional ◽  
Marked Contrast ◽  
Metallic Behavior ◽  
Model Calculations ◽  
Spin Correlations ◽  
Zero Momentum ◽  
Weyl Fermions

The Coulomb interaction in systems of quasi-relativistic massless electrons has an unscreened long-range component at variance with conventional correlated metals. We used nuclear magnetic resonance (NMR) measurements to reveal unusual spin correlations of two-dimensional Weyl fermions in an organic material, causing a divergent increase of the Korringa ratio by a factor of 1000 upon cooling, in marked contrast to conventional metallic behavior. Combined with model calculations, we show that this divergence stems from an interaction-driven velocity renormalization that almost exclusively suppresses zero-momentum spin fluctuations. At low temperatures, the NMR relaxation rate shows an unexpected increase; numerical analyses show that this increase corresponds to internode excitonic fluctuations, a precursor to a transition from massless to massive quasiparticles.

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