Fig. 1: Schematics of the multi-terminal Corbino and electron-electron interaction parameter.
From: Anomalous electronic transport in high-mobility Corbino rings

a Four-terminal Corbino design with gold rings depicting the contact geometry for samples CBM301 and CBM302. The contact ring sizes are identical for both samples. b Electron–electron interaction parameter rs versus electron density (see main text). The rs parameter values for CBM301 (and VdP301) denoted as red dot (star) and CBM302 (and VdP302) denoted as green dot (star) are 0.92 and 1.32, respectively.