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Fermi-liquid instabilities at magnetic quantum phase transitions

2006/06/30 by H. v. Löhneysen, Hilbert v. Löhneysen, Achim Rosch +3 · 80 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Electron #Fermi Gamma-ray Space Telescope #Fermi liquid theory #Fermi surface #Iron-based superconductors research #Phase transition #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum critical point #Quantum mechanics #Quantum oscillations #Quantum phase transition #Quantum phases #Rare-earth and actinide compounds #cond-mat.stat-mech #cond-mat.str-el

paper · pdf · doi:10.1103/revmodphys.79.1015

published as Rev. Mod. Phys. 79, 1015 (2007) · 62 pages, 29 figs, review article for Rev. Mod. Phys; (v2) discussion extended, refs added; (v3) shortened; final version as published

openalex publication_date 2007/08/17 · arxiv created 2007/08/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

This review discusses instabilities of the Fermi-liquid state of conduction electrons in metals with particular emphasis on magnetic quantum critical points. Both existing theoretical concepts and experimental data on selected materials are presented; with the aim of assessing the validity of presently available theory. After briefly recalling the fundamentals of Fermi-liquid theory, the local Fermi-liquid state in quantum impurity models and their lattice versions is described. Next, the scaling concepts applicable to quantum phase transitions are presented. The Hertz-Millis-Moriya theory of quantum phase transitions is described in detail. The breakdown of the latter is analyzed in several examples. In the final part, experimental data on heavy-fermion materials and transition-metal alloys are reviewed and confronted with existing theory.

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