Critical Fermi surfaces and non-Fermi liquid metals

By T. Senthil. 2008

153 citations recorded by the source corpus.

At certain quantum critical points in metals an entire Fermi surface may disappear. A crucial question is the nature of the electronic excitations at the critical point. Here we provide arguments showing that at such quantum critical points the Fermi surface remains sharply defined even though the Landau quasiparticle is absent. The presence of such a critical Fermi surface has a number of consequences for the universal phenomena near the quantum critical point which are discussed. In particular the structure of scaling of the universal critical singularities can be significantly modified from more familiar criticality. Scaling hypotheses appropriate to a critical fermi surface are proposed. Implications for experiments on heavy fermion critical points are discussed. Various phenomena in the normal state of the cuprates are also examined from this perspective. We suggest that a phase transition that involves a dramatic reconstruction of the Fermi surface might underlie a number of strange observations in the metallic states above the superconducting dome.

Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/6923bfe118c963db9b27daa40ee2f692f6fc278a

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Citations in the corpus

Holographic Fermi and non-Fermi liquids with transitions in dilaton gravity (2011, background): “whereas for η<1/2 the phase is in general complex. This result is very similar to what was obtained in the eRN case in [4],[5],[6],[7]. The result also agrees with the general considerations in 24 [22]. 23There is also a prefactor √1 ˆk which gives rise to an additional powerlaw in r. We are not ”
Flat bands, strange metals and the Kondo effect (2023, unknown): “1, using the notion of Kondo destruction and its suitable generalizations to provide an anchoring perspective on strange metallicity.”
Translationally Invariant Non-Fermi-Liquid Metals with Critical Fermi Surfaces: Solvable Models (2018, background): “Such non-Fermi-liquid quantum-critical points have been argued [20,21] to possess a critical Fermi surface—i.”
Non-Fermi liquids from holography (2009, unknown): “[23] T. Senthil (2008), 0803.4009.”
Semi-holographic Fermi liquids (2010, background): “Another, the recent attempt to formulate scaling laws [1], places this subject at the level of development of critical phenomena before the advent of the renormalization group.”
Holographic Fermi surfaces and entanglement entropy (2011, background): “62) which agrees with the analysis in [32].”