Energy scales and the non-Fermi liquid behavior in YbRh2Si2

Shaginyan, V. R.; Amusia, M. Ya.; Попов, К. Г.; Artamonov, S.A.

doi:10.1134/s0021364009130104

Cited by 10 publications

(13 citation statements)

References 33 publications

(132 reference statements)

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“…1 is of generic character, we remember that in the vicinity of QCP it is helpful to use ''internal'' scales to measure the effective mass M * ∝ C /T and temperature T [38,39]. As seen from Fig.…”

Section: Quantum Phase Transitions and The Non-fermi Liquid Behavior mentioning

confidence: 99%

“…We study the universal behavior of high-T c superconductors, HF metals, and 2D Fermi systems at low temperatures using the model of a homogeneous HF liquid [38,39]. The model is quite meaningful because we consider the scaling behavior exhibited by these materials at low temperatures, a behavior related to the scaling of quantities such as the effective mass, the heat capacity, the thermal expansion, etc.…”

Section: Limits and Goals Of The Reviewmentioning

confidence: 99%

“…(3) and (39) have been solved and the effective mass M * FC has been found. This means that we can find the quasiparticle dispersion law ε(p) by choosing the effective mass M * equal to the obtained value of M * FC and then solve Eq.…”

Section: Bogoliubov Quasiparticlesmentioning

confidence: 99%

“…Since we are concentrated on properties that are non-sensitive to the detailed structure of the system we avoid difficulties associated with the anisotropy generated by the crystal lattice of solids, its special features, defects, etc., We study the universal behavior of high-T c superconductors, HF metals, and 2D Fermi systems at low temperatures using the model of a homogeneous HF liquid [38,39]. The model is quite meaningful because we consider the scaling behavior exhibited by these materials at low temperatures, a behavior related to the scaling of quantities such as the effective mass, the heat capacity, the thermal expansion, etc.…”

Section: Limits and Goals Of The Reviewmentioning

confidence: 99%

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Scaling behavior of heavy fermion metals

et al. 2010

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a b s t r a c tStrongly correlated Fermi systems are fundamental systems in physics that are best studied experimentally, which until very recently have lacked theoretical explanations. This review discusses the construction of a theory and the analysis of phenomena occurring in strongly correlated Fermi systems such as heavy-fermion (HF) metals and two-dimensional (2D) Fermi systems. It is shown that the basic properties and the scaling behavior of HF metals can be described within the framework of a fermion condensation quantum phase transition (FCQPT) and an extended quasiparticle paradigm that allow us to explain the non-Fermi liquid behavior observed in strongly correlated Fermi systems. In contrast to the Landau paradigm stating that the quasiparticle effective mass is a constant, the effective mass of new quasiparticles strongly depends on temperature, magnetic field, pressure, and other parameters. Having analyzed the collected facts on strongly correlated Fermi systems with quite a different microscopic nature, we find these to exhibit the same non-Fermi liquid behavior at FCQPT. We show both analytically and using arguments based entirely on the experimental grounds that the data collected on very different strongly correlated Fermi systems have a universal scaling behavior, and materials with strongly correlated fermions can unexpectedly be uniform in their diversity. Our analysis of strongly correlated systems such as HF metals and 2D Fermi systems is in the context of salient experimental results. Our calculations of the non-Fermi liquid behavior, the scales and thermodynamic, relaxation and transport properties are in good agreement with experimental facts.

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Section: Quantum Phase Transitions and The Non-fermi Liquid Behavior mentioning

confidence: 99%

Section: Limits and Goals Of The Reviewmentioning

confidence: 99%

Section: Bogoliubov Quasiparticlesmentioning

confidence: 99%

Section: Limits and Goals Of The Reviewmentioning

confidence: 99%

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Scaling behavior of heavy fermion metals

et al. 2010

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“…In order to reveal the universal scaling behavior, and to establish that salient properties of C/T displayed in Fig. 1 possess generic character, we recall that can be helpful to use "internal" scales to measure the effective mass M * ∝ C/T and temperature T [23,24,52,53]. As successively higher magnetic fields are applied to the sample, Fig.…”

Section: Scaling Behavior and Internal Scalesmentioning

confidence: 99%