Effect of pressure on the magnetic properties of (Co0.5Fe0.5)5GeTe2
Artikel i vetenskaplig tidskrift, 2026
Cobalt-doped Fe _5 GeTe _2 possesses a rich magnetic phase diagram as a function of Co concentration. The nature of magnetic order in (Co _{0.5}Fe _{0.5}) _5GeTe _2 is especially interesting, as it has been shown to exhibit ferromagnetic order, A-type antiferromagnetic (AFM) order, or potentially both at the same time. Here we present magnetoresistance measurements on AFM (Co _{0.5}Fe _{0.5}) _5GeTe _5 at a series of pressures and extract the anisotropy and interlayer exchange fields using the two-sublattice model. We show a 50% increase of the interlayer exchange at 2 GPa, highlighting the sensitivity of magnetic properties to interlayer distance. In addition, we find that the sharp hysteretic transitions observed within the AFM state can be qualitatively described by a linear chain model, which suggests an even-odd effect as a function of layer number instead of a coexisting ferromagnetic phase.
antiferromagnet
hydrostatic pressure
magnetoresistance
van der Waals
anomalous Hall effect
Författare
Tamas Prok
Rijksuniversiteit Groningen
Budapesti Muszaki es Gazdasagtudomanyi Egyetem
MTA BME Correlated Waals Struct Momentum Res Grp
Zoltan Kovacs-Krausz
MTA BME Correlated Waals Struct Momentum Res Grp
Budapesti Muszaki es Gazdasagtudomanyi Egyetem
Harvey Stanfield
University of Manchester
Bing Zhao
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Michael Leonard Morgan
Budapesti Muszaki es Gazdasagtudomanyi Egyetem
Balint Fulop
Budapesti Muszaki es Gazdasagtudomanyi Egyetem
Marcos H. D. Guimaraes
Rijksuniversiteit Groningen
Ivan J. Vera-Marun
University of Manchester
Saroj Prasad Dash
Chalmers, Mikroteknologi och nanovetenskap, Kvantkomponentfysik
Szabolcs Csonka
Institute of Technical Physics and Materials Science
Budapesti Muszaki es Gazdasagtudomanyi Egyetem
Peter Makk
MTA BME Correlated Waals Struct Momentum Res Grp
Budapesti Muszaki es Gazdasagtudomanyi Egyetem
Endre Tovari
Budapesti Muszaki es Gazdasagtudomanyi Egyetem
MTA BME Correlated Waals Struct Momentum Res Grp
2D Materials
2053-1583 (eISSN)
Vol. 13 3 035031IMplementing MEasuRes for Sustainable Estuaries (IMMERSE)
Europeiska kommissionen (EU) (J-No:38-2-9-17), 2018-07-01 -- 2021-12-31.
Ämneskategorier (SSIF 2025)
Den kondenserade materiens fysik
Annan fysik
DOI
10.1088/2053-1583/ae9d90