Probing the Quantum Critical Behavior ofCeCoIn5via Hall Effect Measurements

2007 ◽  
Vol 98 (5) ◽  
Author(s):  
S. Singh ◽  
C. Capan ◽  
M. Nicklas ◽  
M. Rams ◽  
A. Gladun ◽  
...  
Keyword(s):  
Hall Effect ◽  
Critical Behavior ◽  
Hall Effect Measurements ◽  
Quantum Critical ◽  
Quantum Critical Behavior

scholarly journals Hall effect in quantum critical charge-cluster glass

2016 ◽  
Vol 113 (16) ◽  
pp. 4284-4289 ◽  
Author(s):  
Jie Wu ◽  
Anthony T. Bollinger ◽  
Yujie Sun ◽  
Ivan Božović
Keyword(s):  
Hall Effect ◽  
Ground State ◽  
Quantum Critical Point ◽  
Hall Resistance ◽  
Charge Fluctuations ◽  
Charge Cluster ◽  
Quantum Critical ◽  
Quantum Critical Behavior ◽  
Quantum Charge ◽  
D Wave

Upon doping, cuprates undergo a quantum phase transition from an insulator to a d-wave superconductor. The nature of this transition and of the insulating state is vividly debated. Here, we study the Hall effect in La2-xSrxCuO4 (LSCO) samples doped near the quantum critical point at x ∼ 0.06. Dramatic fluctuations in the Hall resistance appear below TCG ∼ 1.5 K and increase as the sample is cooled down further, signaling quantum critical behavior. We explore the doping dependence of this effect in detail, by studying a combinatorial LSCO library in which the Sr content is varied in extremely fine steps, Δx ∼ 0.00008. We observe that quantum charge fluctuations wash out when superconductivity emerges but can be restored when the latter is suppressed by applying a magnetic field, showing that the two instabilities compete for the ground state.

scholarly journals Ferromagnetic quantum critical behavior in heavy-fermion compounds CeTi1−xNixGe3

2016 ◽  
Vol 3 (10) ◽  
pp. 106101 ◽  
Author(s):  
Rajwali Khan ◽  
Jinhu Yang ◽  
Hangdong Wang ◽  
Qianhui Mao ◽  
Jianhua Du ◽  
...  
Keyword(s):  
Critical Behavior ◽  
Heavy Fermion ◽  
Quantum Critical ◽  
Quantum Critical Behavior
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