Polaronic Conductivity in Cr${}_2$Ge${}_2$Te${}_6$ Single Crystals

Abstract

Intrinsic, two-dimensional (2D) ferromagnetic semiconductors are an important class of materials for spin-charge conversion applications. Cr${}_2$Ge${}_2$Te${}_6$ retains long-range magnetic order in bilayer at cryogenic temperatures and shows complex magnetic interactions with considerable magnetic anisotropy. Here, we performed a series of structural, magnetic, X-ray scattering, electronic, thermal transport and first-principles calculation studies which reveal that localized electronic charge carriers in Cr${}_2$Ge${}_2$Te${}_6$ are dressed by surrounding lattice and are involved in polaronic transport via hopping that is sensitive on details of magnetocrystalline anisotropy. This opens possibility for manipulation of charge transport in Cr${}_2$Ge${}_2$Te${}_6$ - based devices by electron-phonon- and spin-orbit coupling-based tailoring of polaron properties.

References in corpus (31)

• BoltzTraP. A code for calculating band-structure dependent quantities
• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Electric-field control of magnetism in few-layered van der Waals magnet
• Magnetic ground state of semiconducting transition metal trichalcogenide monolayers
• Interplay between Kitaev interaction and single ion anisotropy in ferromagnetic CrI${}_3$ and CrGeTe${}_3$ monolayers
• Tailoring Magnetic Anisotropy in Cr${}_2$Ge${}_2$Te${}_6$ by Electrostatic Gating
• Electric Field Effect in Multilayer Cr2Ge2Te6: a Ferromagnetic Two-Dimensional Material
• Topological magnetic-spin textures in two-dimensional van der Waals Cr2Ge2Te6
• Large field-induced gap of Kitaev-Heisenberg paramagnons in $\alpha$-RuCl${}_3$
• Spin-dependent transport in van der Waals magnetic tunnel junctions with Fe3GeTe2 electrodes
• Possible Kitaev Quantum Spin Liquid State in 2D Materials with S=3/2
• Strain-tunable orbital, spin-orbit, and optical properties of monolayer transition-metal dichalcogenides
• Tricritical behavior of two-dimensional intrinsic ferromagnetic semiconducting CrGeTe3
• Large anomalous Hall effect in ferromagnetic insulator-topological insulator heterostructures
• Critical behavior of quasi-two-dimensional semiconducting ferromagnet CrGeTe${}_3$
• Magnetic anisotropy of the single-crystalline ferromagnetic insulator Cr2Ge2Te6
• Large Anomalous Hall Effect in Topological Insulators with Proximitized Ferromagnetic Insulators
• Magnetic anisotropy and spin-polarized two-dimensional electron gas in the van der Waals ferromagnet Cr${}_2$Ge${}_2$Te${}_6$
• Anisotropic magnetic entropy change in Cr${}_2$X${}_2$Te${}_6$ (X = Si and Ge)
• Carrier and strain tunable intrinsic magnetism in two-dimensional MAX${}_3$ transition metal chalcogenides
• Record-High Proximity-Induced Anomalous Hall Effect in (Bi${}_x$Sb${}_{1-x}$)2Te${}_3$ Thin Film Grown on CrGeTe${}_3$ Substrate
• Atomic scale electronic structure of the ferromagnetic semiconductor Cr2Ge2Te6
• Pressure-Induced Structural Phase Transition and a Special Amorphization Phase of Two-Dimensional Ferromagnetic Semiconductor Cr2Ge2Te6
• Electronic structure and magnetic properties of few-layer Cr${}_2$Ge${}_2$Te${}_6$: the key role of nonlocal electron-electron interaction effects
• Unraveling the dislocation core structure at a van der Waals gap in bismuth telluride
• Magnetic Anisotropy and Low Field Magnetic Phase Diagram of Quasi Two-Dimensional Ferromagnet Cr${}_2$Ge${}_2$Te${}_6$
• Polaron formation in the presence of Rashba spin-orbit coupling: implications for spintronics
• Role of non-locality in exchange-correlation for magnetic 2D van der Waals materials
• The Role of Oxygen in Ionic Liquid Gating on 2D Cr2Ge2Te6: a Non-Oxide Material
• Local spin structure of the $\alpha$-RuCl${}_3$ honeycomb-lattice magnet observed via muon spin rotation/relaxation

Cited by in corpus (6)

• Spin-phonon scattering-induced low thermal conductivity in a van der Waals layered ferromagnet Cr${}_2$Si${}_2$Te${}_6$
• Short-range Crystalline Order-Tuned Conductivity in Cr${}_2$Si${}_2$Te${}_6$ van der Waals Magnetic Crystals
• Sizable suppression of magnon Hall effect by magnon damping in Cr${}_2$Ge${}_2$Te${}_6$
• Diagonal and off-diagonal thermal conduction with resonant phonon scattering in $N{i}_{3}Te{O}_6$
• Exchange striction induced thermal Hall effect in van der Waals antiferromagnet MnPS${}_3$
• Dimension-Dependent Critical Scaling Analysis and Emergent Competing Interaction Scales in a 2D Van der Waals magnet Cr${}_2$Ge${}_2$Te${}_6$