scholarly journals Excitonic pairing of two-dimensional Dirac fermions near the antiferromagnetic quantum critical point

2019 ◽  
Vol 99 (24) ◽  
Author(s):  
Hai-Xiao Xiao ◽  
Jing-Rong Wang ◽  
Zheng-Wei Wu ◽  
Guo-Zhu Liu
Keyword(s):  
Critical Point ◽  
Quantum Critical Point ◽  
Dirac Fermions ◽  
Two Dimensional ◽  
Quantum Critical

scholarly journals Two-Dimensional Fluctuations at the Quantum-Critical Point ofCeCu6−xAux

1998 ◽  
Vol 80 (25) ◽  
pp. 5627-5630 ◽  
Author(s):  
O. Stockert ◽  
H. v. Löhneysen ◽  
A. Rosch ◽  
N. Pyka ◽  
M. Loewenhaupt
Keyword(s):  
Critical Point ◽  
Quantum Critical Point ◽  
Two Dimensional ◽  
Quantum Critical

scholarly journals Comment on “The role of electron-electron interactions in two-dimensional Dirac fermions”

Science ◽  
2019 ◽  
Vol 366 (6470) ◽  
pp. eaav6869 ◽  
Author(s):  
S. Hesselmann ◽  
T. C. Lang ◽  
M. Schuler ◽  
S. Wessel ◽  
A. M. Läuchli
Keyword(s):  
Critical Point ◽  
Quantum Critical Point ◽  
Finite Size ◽  
Numerical Data ◽  
Research Articles ◽  
Fermi Velocity ◽  
Dirac Fermions ◽  
Two Dimensional ◽  
Coulomb Interactions

Tang et al. (Research Articles, 10 August 2018, p. 570) report on the properties of Dirac fermions with both on-site and Coulomb interactions. The substantial decrease, up to ~40%, of the Fermi velocity of Dirac fermions with on-site interaction is inconsistent with the numerical data near the Gross-Neveu quantum critical point. This results from an inappropriate finite-size extrapolation.

CLASSICAL BEHAVIOR OF TWO-DIMENSIONAL LIQUID 3He NEAR A QUANTUM CRITICAL POINT

2013 ◽  
Vol 27 (29) ◽  
pp. 1347005
Author(s):  
J. W. CLARK ◽  
V. A. KHODEL ◽  
M. V. ZVEREV
Keyword(s):  
Critical Point ◽  
Fermi Liquid ◽  
Quantum Critical Point ◽  
Strongly Correlated ◽  
Two Dimensional ◽  
Intrinsic Properties ◽  
Zero Sound ◽  
Density Region ◽  
Classical Behavior ◽  
Quantum Critical

Non-Fermi-liquid (NFL) behavior of the specific heat C(T) of two-dimensional (2D) liquid 3 He , first uncovered in measurements almost 20 years ago, is explained in terms of intrinsic properties of this system that emerge when its density rises and the liquid becomes strongly correlated. The occurrence of a T-independent β term in C(T) is attributed to satisfaction of the conditions for Dulong–Petit behavior by the boson part of the free energy. This unexpected classicality stems from softening of the transverse zero-sound mode (TZSM) in the density region where the anomaly in C(T), associated with a quantum critical point (QCP), is observed.

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