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Locally critical quantum phase transitions in strongly correlated metals

Author

Listed:
  • Qimiao Si

    (Rice University)

  • Silvio Rabello

    (Rice University)

  • Kevin Ingersent

    (University of Florida)

  • J. Lleweilun Smith

    (Rice University)

Abstract

When a metal undergoes a continuous quantum phase transition, non-Fermi-liquid behaviour arises near the critical point. All the low-energy degrees of freedom induced by quantum criticality are usually assumed to be spatially extended, corresponding to long-wavelength fluctuations of the order parameter. But this picture has been contradicted by the results of recent experiments on a prototype system: heavy fermion metals at a zero-temperature magnetic transition. In particular, neutron scattering from CeCu6-x Aux has revealed anomalous dynamics at atomic length scales, leading to much debate as to the fate of the local moments in the quantum-critical regime. Here we report our theoretical finding of a locally critical quantum phase transition in a model of heavy fermions. The dynamics at the critical point are in agreement with experiment. We propose local criticality to be a phenomenon of general relevance to strongly correlated metals.

Suggested Citation

  • Qimiao Si & Silvio Rabello & Kevin Ingersent & J. Lleweilun Smith, 2001. "Locally critical quantum phase transitions in strongly correlated metals," Nature, Nature, vol. 413(6858), pages 804-808, October.
    • Handle: RePEc:nat:nature:v:413:y:2001:i:6858:d:10.1038_35101507
    DOI: 10.1038/35101507
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    Cited by:

    1. Lei Chen & Fang Xie & Shouvik Sur & Haoyu Hu & Silke Paschen & Jennifer Cano & Qimiao Si, 2024. "Emergent flat band and topological Kondo semimetal driven by orbital-selective correlations," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    2. W. Simeth & Z. Wang & E. A. Ghioldi & D. M. Fobes & A. Podlesnyak & N. H. Sung & E. D. Bauer & J. Lass & S. Flury & J. Vonka & D. G. Mazzone & C. Niedermayer & Yusuke Nomura & Ryotaro Arita & C. D. Ba, 2023. "A microscopic Kondo lattice model for the heavy fermion antiferromagnet CeIn3," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    3. Sami Dzsaber & Diego A. Zocco & Alix McCollam & Franziska Weickert & Ross McDonald & Mathieu Taupin & Gaku Eguchi & Xinlin Yan & Andrey Prokofiev & Lucas M. K. Tang & Bryan Vlaar & Laurel E. Winter & , 2022. "Control of electronic topology in a strongly correlated electron system," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    4. Honghong Wang & Tae Beom Park & Jihyun Kim & Harim Jang & Eric D. Bauer & Joe D. Thompson & Tuson Park, 2023. "Evidence for charge delocalization crossover in the quantum critical superconductor CeRhIn5," Nature Communications, Nature, vol. 14(1), pages 1-8, December.

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