In this Letter, we provide experimental evidence of the time-reversal symmetric Hall effect in a mesoscopic system, namely, high-mobility graphene–WSe2 heterostructures. This linear, dissipative Hall effect, whose sign depends on the sign of the charge carriers, persists up to room temperature. The magnitude and the sign of the Hall signal can be tuned using an external perpendicular electric field. Our joint experimental and theoretical study establishes that the strain induced by lattice mismatch, or alignment angle inhomogeneity, produces anisotropic bands in graphene while simultaneously breaking the inversion symmetry. The band anisotropy and reduced spatial symmetry lead to the appearance of a time-reversal symmetric Hall effect. Our study establishes graphene–transition metal dichalcogenide-based heterostructures as an excellent platform for studying the effects of broken symmetry on the physical properties of band-engineered two-dimensional systems.

Proximity-induced spin-orbit coupling in graphene offers an exciting platform to probe spin-based effects in chiral Dirac fermionic systems. These systems are believed to be intrinsically time-reversal symmetric, which should ensure that the charge Hall response vanishes without a magnetic field. In contrast to this expectation, we report the first observation of anomalous Hall effect (AHE) in single-layer graphene/single-layer WSe 2 heterostructures that persists up to room temperature. The magnitude and the sign of the AHE can be tuned using an external perpendicular electric field. Our joint experimental and theoretical study establishes that the observed anomalous Hall signal arises from the combined effect of strain and spinorbit coupling in graphene, which induces time-reversal symmetry breaking and manifests 1

We report the experimental observation of Ising superconductivity in three-dimensional NbSe 2 stacked with single-layer MoS 2 . The angular dependence of the upper critical magnetic field and the temperature dependence of the upper parallel critical field confirm the appearance of two-dimensional Ising superconductivity in threedimensional NbSe 2 with a single-layer MoS 2 overlay. We show that the superconducting phase has strong Ising spin-orbit correlations which make the holes spin nondegenerate. Our observation of Ising superconductivity in heterostructures of few-layer NbSe 2 of thickness ∼15 nm with single-layer MoS 2 raises the interesting prospect of observing topological chiral superconductors with nontrivial Chern numbers in a momentum-space spin-split fermionic system.