Magnetophonon oscillations of magnetoresistance in broken-gap InAs/GaS quantum well

For the first time magnetoresistance oscillations from the spectra of microwave absorption were obtained in a broken-gap InAs/GaSb quantum well structure with an inverted band alignment. In the wide temperature range (2.7–270 K) we observed distinct magnetophonon oscillations of magnetoresistance caused by resonant scattering of Landau- quantised Dirac electrons on acoustic phonons in an inverted InAs/GaSb quantum well. Here we studied electron transitions between Landau levels with an acoustic phonon energy equal to the two-dimensional electron energy with the momentum 2$k_{\mathrm{F}}$ in InAs. Magnetoresistance spectra were obtained by means of contactless electron spin resonance technique on the quantum well InAs/GaSb samples with a semi-insulating substrate.