Quasiparticles of strongly correlated Fermi liquids at high temperatures and in high magnetic fields

Abstract

Strongly correlated Fermi systems are among the most intriguing, best experimentally studied and fundamental systems in physics. There is, however, lack of theoretical understanding in this field of physics. The ideas based on the concepts like Kondo lattice and involving quantum and thermal fluctuations at a quantum critical point have been used to explain the unusual physics. Alas, being suggested to describe one property, these approaches fail to explain the others. This means a real crisis in theory suggesting that there is a hidden fundamental law of nature. It turns out that the hidden fundamental law is well forgotten old one directly related to the Landau---Migdal quasiparticles, while the basic properties and the scaling behavior of the strongly correlated systems can be described within the framework of the fermion condensation quantum phase transition (FCQPT). The phase transition comprises the extended quasiparticle paradigm that allows us to explain the non-Fermi liquid (NFL) behavior observed in these 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. Our observations are in good agreement with experimental facts and show that FCQPT is responsible for the observed NFL behavior and quasiparticles survive both high temperatures and high magnetic fields.

17 pages, 17 figures. Dedicated to 100th anniversary of A.B.Migdal birthday

References in corpus (23)

• Fermi-liquid instabilities at magnetic quantum phase transitions
• Quantum criticality
• Metal-insulator transition in two-dimensional electron systems
• Multiple energy scales at a quantum critical point
• Laser ARPES, the sudden approximation, and quasiparticle-like peaks in Bi2Sr2CaCu2O8+delta
• Fermi-surface collapse and dynamical scaling near a quantum critical point
• Scaling Behavior of Heavy Fermion Metals
• Spin-independent origin of the strongly enhanced effective mass in a dilute 2D electron system
• Nonvanishing Energy Scales at the Quantum Critical Point of CeCoIn5
• Magnetic-Field Dependence of the YbRh2Si2 Fermi Surface
• Pressure Study of Quantum Criticality in CeCoIn5
• Mean Field study of the heavy fermion metamagnetic transition
• Direct observation of quasi-particle band in CeIrIn${}_5$: Angle-resolved photoemission spectroscopy study
• Curie law, entropy excess, and superconductivity in heavy fermion metals and other strongly interacting Fermi liquids
• Universal Behavior of Two-Dimensional 3He at Low Temperatures
• Temperature dependent effective mass renormalization in a Coulomb Fermi liquid
• Thermal conductivity in the vicinity of the quantum critical endpoint in Sr3Ru2O7
• Merging of single-particle levels and non-Fermi-liquid behavior of finite Fermi systems
• Two Scenarios of the Quantum Critical Point
• Strongly correlated Fermi-systems: non-Fermi liquid behavior, quasiparticle effective mass and their interplay
• Dispersion Instability in Strongly Interacting Electron Liquids
• Physics of the Insulating Phase in the Dilute Two-Dimensional Electron Gas
• Energy scales and the non-Fermi liquid behavior in YbRh2Si2

Cited by in corpus (7)

• Common quantum phase transition in quasicrystals and heavy-fermion metals
• Challenging Magnetic Field Dependence of the Residual Resistivity of the Heavy-Fermion Metal CeCoIn5
• Quasi-classical physics and T-linear resistivity in both strongly correlated and ordinary metals
• Nature of the quantum critical point as disclosed by extraordinary behavior of magnetotransport and the Lorentz number in the heavy-fermion metal YbRh2Si2
• Flat Bands and Enigma of Metamagnetic Quantum Critical Regime in Sr3Ru2O7
• Fermion condensate generates a new state of matter by making flat bands
• Transport properties of strongly correlated Fermi systems