Fig. 4: Theoretical analyses for the light-induced enhancement of nonreciprocal transport.
From: Light-induced giant enhancement of nonreciprocal transport at KTaO3-based interfaces
a The calculated electronic band structure (Band 1-4, orange and green lines) and the weight of dxy, dyz and dxz (black, purple and blue circles) orbitals of 12-Ta layers of KTO (111) surface from first-principles calculations with Hubbard U = 4 eV. The weight of the orbitals is expressed by the size of the corresponding circles. b, c The calculated Fermi surfaces at EF = 0.03 (in the dark) and 0.25 eV (with the 330-nm irradiation), which are indicated by the dashed black and red lines in (a), respectively. d The average Rashba coefficient (\({\bar{\alpha }}_{{{{{{\rm{R}}}}}}}\)) versus the EF for bottom Band 1,2 (orange line) and top Band 3,4 (green line). e The QMR as a function of the in-plane magnetic field at various wavelengths and in the dark. The solid red curves are the best fits according to Eq. (5). f AQMR and the relaxation time (τ) deduced from (e) as a function of wavelength. The corresponding parameters of the dark condition are also shown.
