Non-Fermi-liquid behavior and anomalous suppression of Landau damping in layered metals close to ferromagnetism

Samuel Ridgway; Chris Hooley

doi:10.1103/PhysRevLett.114.226404

Non-Fermi-liquid behavior and anomalous suppression of Landau damping in layered metals close to ferromagnetism

Samuel Ridgway, Chris Hooley

Research output: Contribution to journal › Article › peer-review

Abstract

We analyze the low-energy physics of nearly ferromagnetic metals in two spatial dimensions using the functional renormalization group technique. We find a new low-energy fixed point, at which the fermionic (electronlike) excitations are non-Fermi-liquid (z_ƒ=13/10) and the magnetic fluctuations exhibit an anomalous Landau damping whose rate vanishes as Γ_q∼|q|^3/5 in the low-|q| limit. We discuss this renormalization of the Landau-damping exponent, which is the major novel prediction of our work, and highlight the possible link between that renormalization and neutron-scattering data on UG_e2 and related compounds. Implications of our analysis for YF_e2Al₁₀ are also discussed.

Original language	English
Article number	226404
Number of pages	5
Journal	Physical Review Letters
Volume	114
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.114.226404
Publication status	Published - 5 Jun 2015

Access to Document

10.1103/PhysRevLett.114.226404

Hooley_2015_PRL_Non-Fermi
© 2015 American Physical Society. Reproduced in accordance with the publisher's author self-archiving policy. Originally published in Physical Review Letters here: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.114.226404#fulltext
Final published version, 138 KB

Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems
Wahl, P. (PI), Baumberger, F. (CoI), Davis, J. C. (CoI), Green, A. (CoI), Hooley, C. (CoI), Keeling, J. M. J. (CoI) & Mackenzie, A. (CoI)
EPSRC
1/09/11 → 31/08/17
Project: Standard

Cite this

@article{ab73c981d6ef43e7993d2a402b405261,

title = "Non-Fermi-liquid behavior and anomalous suppression of Landau damping in layered metals close to ferromagnetism",

abstract = "We analyze the low-energy physics of nearly ferromagnetic metals in two spatial dimensions using the functional renormalization group technique. We find a new low-energy fixed point, at which the fermionic (electronlike) excitations are non-Fermi-liquid (zƒ=13/10) and the magnetic fluctuations exhibit an anomalous Landau damping whose rate vanishes as Γq∼|q|3/5 in the low-|q| limit. We discuss this renormalization of the Landau-damping exponent, which is the major novel prediction of our work, and highlight the possible link between that renormalization and neutron-scattering data on UGe2 and related compounds. Implications of our analysis for YFe2Al10 are also discussed.",

author = "Samuel Ridgway and Chris Hooley",

note = "Financial support from the EPSRC (U.K.) under Grants No. EP/G03673X/1 (S. P. R.) and No. EP/I031014/1 (C. A. H.) is acknowledged.",

year = "2015",

month = jun,

day = "5",

doi = "10.1103/PhysRevLett.114.226404",

language = "English",

volume = "114",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "22",

}

TY - JOUR

T1 - Non-Fermi-liquid behavior and anomalous suppression of Landau damping in layered metals close to ferromagnetism

AU - Ridgway, Samuel

AU - Hooley, Chris

N1 - Financial support from the EPSRC (U.K.) under Grants No. EP/G03673X/1 (S. P. R.) and No. EP/I031014/1 (C. A. H.) is acknowledged.

PY - 2015/6/5

Y1 - 2015/6/5

N2 - We analyze the low-energy physics of nearly ferromagnetic metals in two spatial dimensions using the functional renormalization group technique. We find a new low-energy fixed point, at which the fermionic (electronlike) excitations are non-Fermi-liquid (zƒ=13/10) and the magnetic fluctuations exhibit an anomalous Landau damping whose rate vanishes as Γq∼|q|3/5 in the low-|q| limit. We discuss this renormalization of the Landau-damping exponent, which is the major novel prediction of our work, and highlight the possible link between that renormalization and neutron-scattering data on UGe2 and related compounds. Implications of our analysis for YFe2Al10 are also discussed.

AB - We analyze the low-energy physics of nearly ferromagnetic metals in two spatial dimensions using the functional renormalization group technique. We find a new low-energy fixed point, at which the fermionic (electronlike) excitations are non-Fermi-liquid (zƒ=13/10) and the magnetic fluctuations exhibit an anomalous Landau damping whose rate vanishes as Γq∼|q|3/5 in the low-|q| limit. We discuss this renormalization of the Landau-damping exponent, which is the major novel prediction of our work, and highlight the possible link between that renormalization and neutron-scattering data on UGe2 and related compounds. Implications of our analysis for YFe2Al10 are also discussed.

U2 - 10.1103/PhysRevLett.114.226404

DO - 10.1103/PhysRevLett.114.226404

M3 - Article

SN - 0031-9007

VL - 114

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

M1 - 226404

ER -

Non-Fermi-liquid behavior and anomalous suppression of Landau damping in layered metals close to ferromagnetism

Abstract

Access to Document

Fingerprint

Projects

Topological Protection and NonEquilibriu: Topological Protection and NonEquilibrium States in Strongly Correlated Electron Systems

Cite this