Interface-enhanced room-temperature Curie temperature in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>CrP</mml:mi><mml:msub><mml:mi mathvariant="normal">S</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:mtext>/</mml:mtext><mml:mtext>graphene</mml:mtext></mml:mrow></mml:math> van der Waals heterostructure
Wenxuan Zhu, Cheng Song, Lei Han, Hua Bai, Chong Chen, Feng Pan
Abstract
The authors experimentally show here that the Curie temperature of van der Waals CrPS${}_{4}$ is elevated from 40 K up to room temperature by the interfacial effect from graphene. The compatible Fermi level between CrPS${}_{4}$ and graphene enables sufficient interfacial charge transfer across their atomically fine interface, leading to promoted exchange coupling and higher Curie temperature of CrPS${}_{4}$ without the participation of strong spin-orbit coupling. The enhanced magnetism of CrPS${}_{4}$ further induces room-temperature exchange splitting in graphene by the magnetic proximity effect.
Topics & Concepts
Curie temperaturevan der Waals forceCondensed matter physicsGrapheneMaterials scienceMarie curieCoupling (piping)MagnetismFerromagnetismSpin (aerodynamics)PhysicsThermodynamicsNanotechnologyQuantum mechanicsMoleculeMetallurgyEuropean unionBusinessEconomic policyGraphene research and applications2D Materials and ApplicationsAdvancements in Battery Materials