Fig. 3: Differential reflectance contrast (DR/R) and photoluminescence excitation (PLE) spectroscopy.
From: Interplay of vibrational, electronic, and magnetic states in CrSBr
a, b PLE and corresponding DR/R spectra for a 5 nm thick CrSBr flake. Blue curves represent excitation polarized along the a axis, and red curves along the b axis. The intensities along the vertical axes are normalized. Green and red dashed lines serve as guides to highlight matching spectral features. d, e Equivalent measurements for a 31-nm-thick flake. c, f False-color maps showing the temperature evolution of DR/R signal polarized along b axis between 4 and 300 K for 5 nm (c) and 31 nm (f) thick flakes.
