scholarly journals Critical temperature and Ginzburg region near a quantum critical point in two-dimensional metals

2011 ◽  
Vol 84 (7) ◽  
Author(s):  
J. Bauer ◽  
P. Jakubczyk ◽  
W. Metzner
Keyword(s):  
Critical Temperature ◽  
Critical Point ◽  
Quantum Critical Point ◽  
Two Dimensional ◽  
Quantum Critical

ANISOTROPIC IN PLAIN Cu-O STRAIN AND THE STRIPE QUANTUM CRITICAL POINT IN YBa2Cu3O6+k

2000 ◽  
Vol 14 (29n31) ◽  
pp. 3668-3672 ◽  
Author(s):  
S. SANNA ◽  
P. MANCA ◽  
S. AGRESTINI ◽  
N. L. SAINI ◽  
A. BIANCONI
Keyword(s):  
Critical Temperature ◽  
Critical Point ◽  
Critical Strain ◽  
Quantum Critical Point ◽  
Temperature Scales ◽  
Quantum Critical

Anisotropic Cu-O strain has been measured and a relation between the superconducting critical temperature and the strain is studied in the YBa 2 Cu 3 O 6+ k (Y123). oxygen ordered YBa 2 Cu 3 O 6+ k phases. We show that the critical temperature scales both with the strain along the a axis (ε a ,) and along the b axis (ε b ). While undoped, the system is close to the critical strain, ε c ~ 0.043. The formation of chains with doping gives rise to a decrease of the ε b to take the system away from the critical point approaching the dynamical quantum stripe fluctuations (ε b <ε c ) and the ε a increases to approach the phase of superconducting stripes (ε a >ε c ).

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
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