scholarly journals Adiabatic dynamics of a quantum critical system coupled to an environment: Scaling and kinetic equation approaches

2009 ◽  
Vol 80 (2) ◽  
Author(s):  
Dario Patanè ◽  
Luigi Amico ◽  
Alessandro Silva ◽  
Rosario Fazio ◽  
Giuseppe E. Santoro
Keyword(s):  
Kinetic Equation ◽  
Critical System ◽  
Adiabatic Dynamics ◽  
Quantum Critical

Static and dynamic susceptibility in the putative ferromagnetic quantum critical system YbNi4 P2 probed by 31 P NMR

2013 ◽  
Vol 250 (3) ◽  
pp. 519-521 ◽  
Author(s):  
Rajib Sarkar ◽  
Panchanan Khuntia ◽  
Johannes Spehling ◽  
Cornelius Krellner ◽  
Christoph Geibel ◽  
...  
Keyword(s):  
Dynamic Susceptibility ◽  
Critical System ◽  
Quantum Critical

scholarly journals Phase diagram of quantum critical system via local convertibility of ground state

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Si-Yuan Liu ◽  
Quan Quan ◽  
Jin-Jun Chen ◽  
Yu-Ran Zhang ◽  
Wen-Li Yang ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Ground State ◽  
Critical System ◽  
Quantum Critical

scholarly journals Adiabatic dynamics in passage across quantum critical lines and gapless phases

2010 ◽  
Vol 81 (1) ◽  
Author(s):  
Debanjan Chowdhury ◽  
Uma Divakaran ◽  
Amit Dutta
Keyword(s):  
Adiabatic Dynamics ◽  
Quantum Critical ◽  
Critical Lines

scholarly journals Identification of the low-energy excitations in a quantum critical system

AIP Advances ◽  
2016 ◽  
Vol 7 (5) ◽  
pp. 055701 ◽  
Author(s):  
Tom Heitmann ◽  
Jagat Lamsal ◽  
Shannon Watson ◽  
Ross Erwin ◽  
Wangchun Chen ◽  
...  
Keyword(s):  
Low Energy ◽  
Critical System ◽  
Quantum Critical

Ground state of a quantum critical system: Neutron scattering onCe(Ru1−xFex)2Ge2

2007 ◽  
Vol 76 (5) ◽  
Author(s):  
Wouter Montfrooij ◽  
Jagat Lamsal ◽  
Meigan Aronson ◽  
Marcus Bennett ◽  
Anne de Visser ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Ground State ◽  
Critical System ◽  
Quantum Critical

scholarly journals Quantum-critical scale invariance in a transition metal alloy

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Yasuyuki Nakajima ◽  
Tristin Metz ◽  
Christopher Eckberg ◽  
Kevin Kirshenbaum ◽  
Alex Hughes ◽  
...  
Keyword(s):  
Scale Invariance ◽  
High Temperature Superconductivity ◽  
Applied Pressure ◽  
Anomalous Behavior ◽  
Zero Field ◽  
Zero Temperature ◽  
Critical System ◽  
Transition Metal Alloy ◽  
Scattering Rate ◽  
Quantum Critical

AbstractQuantum-mechanical fluctuations between competing phases induce exotic collective excitations that exhibit anomalous behavior in transport and thermodynamic properties, and are often intimately linked to the appearance of unconventional Cooper pairing. High-temperature superconductivity, however, makes it difficult to assess the role of quantum-critical fluctuations in shaping anomalous finite-temperature physical properties. Here we report temperature-field scale invariance of non-Fermi liquid thermodynamic, transport, and Hall quantities in a non-superconducting iron-pnictide, Ba(Fe1/3Co1/3Ni1/3)2As2, indicative of quantum criticality at zero temperature and applied magnetic field. Beyond a linear-in-temperature resistivity, the hallmark signature of strong quasiparticle scattering, we find a scattering rate that obeys a universal scaling relation between temperature and applied magnetic fields down to the lowest energy scales. Together with the dominance of hole-like carriers close to the zero-temperature and zero-field limits, the scale invariance, isotropic field response, and lack of applied pressure sensitivity suggests a unique quantum critical system unhindered by a pairing instability.

scholarly journals 31P NMR investigations on the ferromagnetic quantum critical system YbNi4P2

2012 ◽  
Vol 85 (14) ◽  
Author(s):  
R. Sarkar ◽  
P. Khuntia ◽  
C. Krellner ◽  
C. Geibel ◽  
F. Steglich ◽  
...  
Keyword(s):  
31P Nmr ◽  
Critical System ◽  
Quantum Critical
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