Fig. 3
From: Cross-dimensional electron-phonon coupling in van der Waals heterostructures
Intensity resonances of the S and LB modes in 39L-hBN/mLW and corresponding mLW. Raman spectra of a 39L-hBN/3LW and b 3LW excited by Eex in the range of 2.41–2.81 eV. The diamonds and circles represent the two prime LB modes in 39L-hBN/3LW. The crosses show TA phonons resonant with the B exciton45. The resonant profiles of c the LB42,36 (red diamonds), LB42,37 (blue circles) and S3,1 (gray stars) in 39L-hBN/3LW, d the LB41,33 (red diamonds), LB41,34 (blue circles) and S2,1 (gray stars) modes in 39L-hBN/2LW, e the S3,1 (gray stars) and LB3,2 (red diamonds) modes in 3LW flake, f the S2,1 (gray stars) and LB2,1 (red diamonds) modes in 2LW flake. The diamonds, circles, and stars represent the experimental data while the red and blue solid lines are the fitting results. The Raman intensity is normalized by the E1 mode of quartz at ~127 cm−1 to eliminate the different efficiencies of charge-coupled device at different Eex
