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Journal of Physics Condensed MatterVolume 32, Issue 12, 2020, Article number 125601

Scaling theory of magnetism in frustrated Kondo lattices(Article)(Open Access)

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  • aM. N. Mikheev Institute of Metal Physics, Ekaterinburg, 620990, Russian Federation
  • bUral Federal University, Ekaterinburg, 620002, Russian Federation

Abstract

A scaling theory of the Kondo lattices with frustrated exchange interactions is developed, criterium of antiferromagnetic ordering and quantum-disordered state being investigated. The calculations taking into account magnon and incoherent spin dynamics are performed. Depending on the bare model parameters, one or two quantum phase transitions into non-magnetic spin-liquid and Kondo Fermi-liquid ground states can occur with increasing the bare coupling constant. Whereas the renormalization of the magnetic moment in the ordered phase can reach orders of magnitude, spin fluctuation frequency and coupling constant are moderately renormalized in the spin-liquid phase. This justifies application of the scaling approach. Possibility of a non-Fermi-liquid behavior is treated. © 2019 IOP Publishing Ltd.

Author keywords

frustrationKondo latticemagnetism

Indexed keywords

Engineering controlled terms:AntiferromagnetismFermi liquidsFermionsGround stateLiquidsMagnetic momentsMagnetismPhase transitionsQuantum theorySpin fluctuations
Engineering uncontrolled termsAntiferromagnetic orderingsCoupling constantsFluctuation frequencyfrustrationKondo latticesNon-Fermi-liquid behaviorOrders of magnitudeQuantum phase transitions
Engineering main heading:Lattice theory
EMTREE medical terms:articlecalculationfrustrationmagnetismphase transition
  • ISSN: 09538984
  • CODEN: JCOME
  • Source Type: Journal
  • Original language: English
  • DOI: 10.1088/1361-648X/ab5cb0
  • PubMed ID: 31778973
  • Document Type: Article
  • Publisher: Institute of Physics Publishing

  Irkhin, V.Y.; M. N. Mikheev Institute of Metal Physics, Ekaterinburg, Russian Federation;
© Copyright 2020 Elsevier B.V., All rights reserved.

Cited by 3 documents

Irkhin, V.Y.
Magnetism, Non-Fermi-Liquid Behavior, and Deconfinement in Kondo Lattices
(2023) JETP Letters
Irkhin, V.Y. , Skryabin, Y.N.
Two-band model and RVB-type states: Application to Kondo lattices, pyrochlores and Mn-based systems
(2022) Physica B: Condensed Matter
Komleva, E.V. , Irkhin, V.Y. , Solovyev, I.V.
Unconventional magnetism and electronic state in the frustrated layered system PdCrO2
(2020) Physical Review B
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