Ripples in phosphorene could unlock new magnetic sensors
Researchers found that microscopic surface wrinkles in phosphorene—a promising semiconductor material—significantly alter how the material behaves in magnetic fields. The discovery suggests engineers can fine-tune the material's electrical properties for next-generation sensors and electronics, potentially opening new applications in devices operating under 10 tesla magnetic fields.
Originaltitel: Effect of long-range structural corrugations on magnetotransport properties of phosphorene in tilted magnetic field
<p>Rippling is an inherent quality of two-dimensional materials playing an important role in determining their properties. Here, we study the effect of structural corrugations on the electronic and transport properties of monolayer black phosphorus (phosphorene) in the presence of tilted magnetic field. We follow a perturbative approach to obtain analytical corrections to the spectrum of Landau levels induced by a long-wavelength corrugation potential. We show that surface corrugations have a non-negligible effect on the electronic spectrum of phosphorene in tilted magnetic field. Particularly, the Landau levels are shown to exhibit deviations from the linear field dependence. The observed effect become especially pronounced at large tilt angles and corrugation amplitudes. Magnetotransport properties are further examined in the low temperature regime taking into account impurity scattering. We calculate magnetic field dependence of the longitudinal and Hall resistivities and find that the nonlinear effects reflecting the corrugation might be observed even in moderate fields (B amp;lt; 10 T).</p>