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 (12)

• BoltzTraP. A code for calculating band-structure dependent quantities
• Possible Kitaev Quantum Spin Liquid State in 2D Materials with S=3/2
• 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${}_3$
• Large Anomalous Hall Effect in Topological Insulators with Proximitized Ferromagnetic Insulators
• Anisotropic magnetic entropy change in Cr${}_2$X${}_2$Te${}_6$ (X = Si and Ge)
• Record-High Proximity-Induced Anomalous Hall Effect in (Bi${}_x$Sb${}_{1-x}$)2Te${}_3$ Thin Film Grown on CrGeTe${}_3$ Substrate
• Pressure-Induced Structural Phase Transition and a Special Amorphization Phase of Two-Dimensional Ferromagnetic Semiconductor Cr2Ge2Te6
• Atomic scale electronic structure of the ferromagnetic semiconductor Cr2Ge2Te6
• Unraveling the dislocation core structure at a van der Waals gap in bismuth telluride
• The Role of Oxygen in Ionic Liquid Gating on 2D Cr2Ge2Te6: a Non-Oxide Material

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${}_6$