Electronic transport and magnetism in the alternating stack of metallic and highly frustrated magnetic layers in Co1/3NbS2

Scientific paper - Original scientific paper

• Author: Petar Popčević
• Author: Ivo Batistić
• Author: Ana Smontara
• Author: Kristijan Velebit
• Author: J. Jaćimović
• Author: Ivica Živković
• Author: N. Tsyrulin
• Author: J. Piatek
• Author: H. Berger
• Author: A. Sidorenko
• Author: H. Rønnow
• Author: Laszlo Forró
• Author: Neven Barišić
• Author: Eduard Tutiš
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

Transition-metal dichalcogenides (TMDs) are layered compounds that support many electronic phases, including various charge density waves, superconducting, and Mott insulating states. Their intercalation with magnetic ions introduces magnetic sublayers, which strongly influence the coupling between host layers, and feature various magnetic states adjustable by external means. Co1/3NbS2 hosts a particularly sensitive magnetic subsystem with the lowest magnetic ordering temperature in the family of magnetically intercalated TMDs and is the only one where the complete suppression of magnetic order under pressure has been recently suggested. By combining the results of several experimental methods, electronic ab initio calculations, and modeling, we develop insights into the mechanisms of electric transport, magnetic ordering, and their interaction in this compound. The elastic neutron scattering is used to directly follow the evolution of the antiferromagnetic order parameter with pressure and temperature. Our results unambiguously disclose the complete suppression of the observed magnetic order around 1.7GPa. We delve into possible mechanisms of magnetic order suppression under pressure, highlighting the role of magnetic frustrations indicated by magnetic susceptibility measurements and ab initio calculations. Electronic conduction anisotropy is measured in a wide temperature and pressure range. Here, we show that the transport in directions along and perpendicular to layers respond differently to the appearance of magnetic ordering or the application of the hydrostatic pressure. We propose a spin-valve mechanism where the intercalated Co ions act as spin-selective electrical transport bridges between host layers. The mechanism applies to various magnetic states and can be extended to other magnetically intercalated TMDs.

• Keywords (english): ransition metal dichalcogenides, DFT, electrical transport, electronic structure, layered crystals, magnetism
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review B
• Numbering: vol. 107, no. 23, 235149
• p-ISSN: 2469-9950
• e-ISSN: 2469-9969
• DOI: https://doi.org/10.1103/PhysRevB.107.235149
• URN:NBN: urn:nbn:hr:217:594207
• Publication: 2023
• Project: Number: 035-0352826-2847; Title (croatian): Modeliranje fizikalnih svojstava materijala s izraženom frustracijom ili neredom; Title (english): Modelling physical properties of materials with marked frustration or disorder; Leader: Eduard Tutiš; Jurisdiction: Croatia; Funding stream: zProjects
• Project: Number: 035-0352826-2848; Title (croatian): Transport topline i naboja u jako frustriranim magnetima i srodnim materijalima; Title (english): Thermal and charge transport in highly frustrated magnets and related materials; Leader: Ana Smontara; Jurisdiction: Croatia; Funding stream: zProjects
• Project: Number: IP-2016-06-7258; Title (croatian): Fizika mnogočestičnih sustava - iskorištavanje svijeta kompleksnosti; Acronym: COMPLEX_ORBIS; Leader: Osor-Slaven Barišić; Jurisdiction: Croatia; Funding stream: Research Projects
• Project: Number: IP-2020-02-9666; Title (croatian): Interkalirani Dihalkogenidi Prijelaznih Metala; Title (english): Intercalated Transition Metal Dichalcogenides; Acronym: iTMD; Leader: Petar Popčević; Jurisdiction: Croatia; Funding stream: Research Projects
• Project: Number: KK.01.1.1.02.0012; Title (croatian): Kriogeni centar Instituta za fiziku; Title (english): Cryogenic Centre at the Institute of Physics; Acronym: KaCIF; Leader: Nikolina Novosel; Jurisdiction: eu; Funding stream: European Regional Development Fund
• Project: Number: 725521; Title (croatian): The Janus-face of the localized carrier in cuprates: Generating the pseudogap and high temperature superconductivity; Title (english): The Janus-face of the localized carrier in cuprates: Generating the pseudogap and high temperature superconductivity; Acronym: TheONE; Jurisdiction: eu; Funding stream: European Research Council
• Document URL: https://link.aps.org/doi/10.1103/PhysRevB.107.235149
• Type of resource: Text
• Access conditions: Open access
• Public note: © 2023 American Physical Society. Received 3 March 2023. Revised 29 May 2023. Accepted 6 June 2023. Published 29 June 2023.
• Created on: 2024-07-23 11:10:41