In\ngraphene devices in a perpendicular magnetic field we observe photocurrent\ngenerated uniformly along the free edges, with opposite sign at opposite edges.\nThe signal is antisymmetric in field, shows a peak versus gate voltage at the\nneutrality point flanked by wings of opposite sign at ...
When laser light is focused onto graphene devices in a magnetic field a long-range photo-Nernst effect causes photocurrents to be generated along the free edges. Photocurrent measurements provide a powerful means of studying the spatially resolved optoel
Photo-Nernst current in graphene Abstract Photocurrent measurements provide a powerful means of studying the spatially resolved optoelectronic and electrical properties of a material or device1. Generally speaking there are two classes of mechanism for photocurrent generation: those involving separation of el...
In graphene devices in a perpendicular magnetic field we observe photocurrent generated uniformly along the free edges, with opposite sign at opposite edges. The signal is antisymmetric in field, shows a peak versus gate voltage at the neutrality point flanked by wings of opposite sign at low ...