STS and field-dependent Landau level measurements on both terminations of MBE-grown MnBi4Te7 films yield surface-state mass terms of roughly 23-30 meV, with a doping-tunable exchange term on the MnBi2Te4 termination.
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The experimental determination of exchange mass terms in surface states on both terminations of MnBi4Te7
STS and field-dependent Landau level measurements on both terminations of MBE-grown MnBi4Te7 films yield surface-state mass terms of roughly 23-30 meV, with a doping-tunable exchange term on the MnBi2Te4 termination.