Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Topology stabilized fluctuations in a magnetic nodal semimetal

Journal Article · · Nature Communications
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; « less

Abstract

The interplay between magnetism and electronic band topology enriches topological phases and has promising applications. However, the role of topology in magnetic fluctuations has been elusive. Here, we report evidence for topology stabilized magnetism above the magnetic transition temperature in magnetic Weyl semimetal candidate CeAlGe. Electrical transport, thermal transport, resonant elastic X-ray scattering, and dilatometry consistently indicate the presence of locally correlated magnetism within a narrow temperature window well above the thermodynamic magnetic transition temperature. The wavevector of this short-range order is consistent with the nesting condition of topological Weyl nodes, suggesting that it arises from the interaction between magnetic fluctuations and the emergent Weyl fermions. Effective field theory shows that this topology stabilized order is wavevector dependent and can be stabilized when the interband Weyl fermion scattering is dominant. Our work highlights the role of electronic band topology in stabilizing magnetic order even in the classically disordered regime.

Sponsoring Organization:
USDOE
Grant/Contract Number:
NONE; SC0020148; SC0012704
OSTI ID:
1996877
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 14; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (43)

Heavy Fermions: Electrons at the Edge of Magnetism book December 2007
Zero‐Field Nernst Effect in a Ferromagnetic Kagome‐Lattice Weyl‐Semimetal Co 3 Sn 2 S 2 journal April 2019
Direct measurement of antiferromagnetic domain fluctuations journal May 2007
Intense paramagnon excitations in a large family of high-temperature superconductors journal July 2011
Large anomalous Nernst effect at room temperature in a chiral antiferromagnet journal July 2017
Extremely high conductivity observed in the triple point topological metal MoP journal June 2019
Observation of Weyl fermions in a magnetic non-centrosymmetric crystal journal July 2020
Magnetism and anomalous transport in the Weyl semimetal PrAlGe: possible route to axial gauge fields journal January 2020
Unconventional resistivity scaling in topological semimetal CoSi journal January 2023
Ultrahigh conductivity in Weyl semimetal NbAs nanobelts journal March 2019
Weyl-mediated helical magnetism in NdAlSi journal August 2021
Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal journal July 2018
An ultrafast symmetry switch in a Weyl semimetal journal January 2019
Perpendicular full switching of chiral antiferromagnetic order by current journal July 2022
A comparison of four direct geometry time-of-flight spectrometers at the Spallation Neutron Source journal April 2014
Anomalies of magnetoresistance in Ce-based heavy fermion compounds journal December 2015
Large Hall and Nernst responses from thermally induced spin chirality in a spin-trimer ferromagnet journal August 2021
Transport coefficients of the Anderson model via the numerical renormalization group journal March 1994
SEQUOIA: A Newly Operating Chopper Spectrometer at the SNS journal November 2010
Resonant x-ray scattering study of diffuse magnetic scattering from the topological semimetals EuCd 2 As 2 and EuCd 2 Sb 2 journal July 2020
Dynamics of local magnetic moments induced by itinerant Weyl electrons journal April 2021
Spin-polarized imaging of strongly interacting fermions in the ferrimagnetic state of the Weyl candidate CeBi journal February 2022
Dynamic origin of conical helix magnetization textures stabilized by Dzyaloshinskii-Moriya interaction journal June 2022
Ruderman-Kittel-Kasuya-Yosida interaction in Weyl semimetals journal December 2015
RKKY interaction of magnetic impurities in Dirac and Weyl semimetals journal December 2015
Magnetic and noncentrosymmetric Weyl fermion semimetals in the R AlGe family of compounds ( R = rare earth ) journal January 2018
Nanosecond X-Ray Photon Correlation Spectroscopy on Magnetic Skyrmions journal August 2017
Topological Magnetic Phase in the Candidate Weyl Semimetal CeAlGe journal January 2020
Role of Equilibrium Fluctuations in Light-Induced Order journal November 2021
Kagome Lattice Promotes Chiral Spin Fluctuations journal March 2023
From the Kondo Regime to the Mixed-Valence Regime in a Single-Electron Transistor journal December 1998
Magnetic-Field-Induced Quantum Critical Point and Competing Order Parameters in U R u 2 S i 2 journal December 2003
Weyl and Dirac semimetals in three-dimensional solids journal January 2018
An Ultrasensitive Differential Capacitive Dilatometer journal February 2019
Discovery of Lorentz-violating type II Weyl fermions in LaAlGe journal June 2017
Direct visualization of coexisting channels of interaction in CeSb journal March 2019
Spin fluctuation induced Weyl semimetal state in the paramagnetic phase of EuCd 2 As 2 journal July 2019
Surface states in bulk single crystal of topological semimetal Co 3 Sn 2 S 2 toward water oxidation journal August 2019
Helicity-dependent photocurrents in the chiral Weyl semimetal RhSi journal July 2020
Colossal anomalous Nernst effect in a correlated noncentrosymmetric kagome ferromagnet journal March 2021
Discovery of a Weyl fermion semimetal and topological Fermi arcs journal July 2015
Singular angular magnetoresistance in a magnetic nodal semimetal journal June 2019
Dirac and Weyl Materials: Fundamental Aspects and Some Spintronics Applications journal June 2016

Similar Records

Related Subjects