# TOPICAL REVIEW: How do Fermi liquids get heavy and die?

@article{Coleman2001TOPICALRH, title={TOPICAL REVIEW: How do Fermi liquids get heavy and die?}, author={Piers Coleman and Catherine P{\'e}pin and Qimiao Si and Revaz Ramazashvili}, journal={Journal of Physics: Condensed Matter}, year={2001} }

We discuss non-Fermi liquid and quantum critical behaviour in heavy-fermion materials, focusing on the mechanism by which the electron mass appears to diverge at the quantum critical point. We ask whether the basic mechanism for the transformation involves electron diffraction off a quantum critical spin-density wave, or whether a breakdown in the composite nature of the heavy electron takes place at the quantum critical point. We show that the Hall constant changes continuously in the first…

## 254 Citations

Emergent Critical Charge Fluctuations at the Kondo Breakdown of Heavy Fermions.

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Quantum criticality describes the collective fluctuations of matter undergoing a second-order phase transition at zero temperature. Heavy-fermion metals have in recent years emerged as prototypical…

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- PhysicsScientific reports
- 2011

The finding of the associated quantum critical spin fluctuations of the antiferromagnetic spin density wave order, dominating the local fluctuations due to single-site Kondo effect, provide new information about the underlying mechanism that can be important in understanding superconductivity in this novel compound.

Hall-effect evolution across a heavy-fermion quantum critical point

- PhysicsNature
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Measurements of the low-temperature Hall coefficient (RH)—a measure of the Fermi surface volume—in the heavy-fermion metal YbRh2Si2 upon field-tuning it from an antiferromagnetic to a paramagnetic state are reported.

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- PhysicsNature communications
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It is shown, using angle-resolved photoemission spectroscopy, that the Fermi liquid quasiparticle excitations of the overdoped superconducting cuprate La1.77Sr0.23CuO4 is highly anisotropic in momentum space and hence the Kadowaki-Wood's relation is not obeyed.

Quantum Criticality in Heavy Electron Compounds

- Physics
- 2009

Heavy electron systems provide ideal venues to study a range of issues associated with quantum criticality, including unconventional electronic phases, mo- ment formation, and complex phase diagrams…

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Strongly correlated electron systems at the border of magnetism are of active current interest, particularly because the accompanying quantum criticality provides a route towards both strange‐metal…

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