Fig. 4: Spatial localization and polarization properties of the plexciton.
From: Probing plexciton emission from 2D materials on gold nanotrenches
a Calculated electric field of the plexciton (LP) for a nanotrench corresponding to zero detuning (\(w=20\) nm and \(d=50\) nm). The vector field is represented by the arrows (length proportional to amplitude in log-scale). The background color plot shows the real-part of the x component of the field. The ALD-coated nanotrench and the WSe2 monolayer are outlined as black and purple lines, respectively. b Corresponding field enhancement along the x and z directions [color-matching line cuts in (a)]. c Scheme depicting the scanning directions of the dielectric probe relative to the nanotrench site along the lateral (x) and vertical (z) directions. d PL line scan along the lateral direction measured from a nanotrench at zero detuning (\(w=24\) nm and \(d=46\) nm) with a step size of 20 nm. e Polarization state of the plexciton assessed by rotating the linear polarizer at the output of the probe in increments of 10°. f PL spectra recorded as the probe is retracted from the z0 position with a step size of 0.5 nm. g Similar to (c), but now employing a gold-coated probe. h PL map for a lateral line scan with a step size of 15 nm.
