Extended Data Fig. 1: Optically detected flavour polarization in R3G.
From: Fluctuating magnetism and Pomeranchuk effect in multilayer graphene
a, Measurement schematic of the optical probe technique. A WSe2 sensing layer is directly in contact with R3G and its exciton energy is used as a probe of the Fermi surface reconstructions in R3G. b, Reflection contrast of the R3G/WSe2 heterostructure near WSe2 2s exciton resonance, as a function of ne at D = 0.75 V nm−1 and T = 2 K. c, Derivative with respect to energy E of the data in panel b. d, Extracted 2s exciton energy at different temperatures. The energy shift ΔE is measured relative to charge neutrality of the R3G layer, with individual curves offset by 4 meV for clarity.
