What question did this study set out to answer?

To determine whether combining ferromagnetic exchange and spin-orbit coupling via dual proximity unlocks a gate-tunable anomalous Hall effect in monolayer graphene.

September 1, 2026Small ScienceOpen Access

Gate‐Tunable Remnant Anomalous Hall Effect in Dual‐Proximity Graphene Heterostructures

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To determine whether combining ferromagnetic exchange and spin-orbit coupling via dual proximity unlocks a gate-tunable anomalous Hall effect in monolayer graphene.
Fabricated dual-proximity Cr2Ge2Te6/graphene/WSe2 van der Waals heterostructures alongside Cr2Ge2Te6/graphene bilayer control devices.
Conducted magnetotransport measurements across carrier densities controlled by gate voltage and across temperatures up to above 50 K.
Performed scaling analysis of anomalous Hall conductivity against longitudinal conductivity and modeled low-energy Berry-curvature hot spots.
Near charge neutrality, the trilayer displayed a hysteretic transverse resistance with a remnant offset of up to ΔR_xy ≈ 250 Ω and a transport reversal field of ~20 mT.
The anomalous Hall conductivity reached the order of e^2/h, changing sign multiple times within a narrow energy window before vanishing above T ≈ 50 K.
The effect was entirely absent in Cr2Ge2Te6/graphene bilayer controls, and scaling analysis ruled out extrinsic skew-scattering and side-jump mechanisms.

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Implication

Experimental study demonstrates a gate-tunable remnant anomalous Hall effect in dual-proximity graphene, indicating a route toward voltage-controlled topological states.

Cite This Study

Satheesh et al. (2026) studied this question.

synapsesocial.com/papers/6aae2f8e798e528af4566bce https://doi.org/10.1002/smsc.70404

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Implication

Experimental study demonstrates a gate-tunable remnant anomalous Hall effect in dual-proximity graphene, indicating a route toward voltage-controlled topological states.

Gate‐Tunable Remnant Anomalous Hall Effect in Dual‐Proximity Graphene Heterostructures

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Discussion

Implication

Cite This Study

Gate‐Tunable Remnant Anomalous Hall Effect in Dual‐Proximity Graphene Heterostructures

Key Points

Discussion

Implication

Cite This Study

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