Abstract
Cyclotron resonance spectra in high magnetic fields up to 34 T in InAs/GaSb/InAs “three-layer” quantum wells with gapless Dirac fermions have been studied. In quantizing magnetic fields, an absorption line associated with transitions from the lower Landau levels of electrons in a subband with a “conical” dispersion relation has been detected. Experimental energies of the transitions have been compared to theoretical calculations with the eight-band Kane Hamiltonian. The results confirm the gapless band structure of the studied samples.
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Ruffenach, S., Krishtopenko, S.S., Bovkun, L.S. et al. Magnetoabsorption of Dirac Fermions in InAs/GaSb/InAs “Three-Layer” Gapless Quantum Wells. Jetp Lett. 106, 727–732 (2017). https://doi.org/10.1134/S0021364017230102
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DOI: https://doi.org/10.1134/S0021364017230102