Physical Review B
Quantum transport properties of β-Bi₄I₄ near and well beyond the extreme quantum limit
Physical Review B · 103, 155201 (2021)
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Introduction
Quantum oscillations characterize carriers in β-Bi₄I₄ before and beyond the extreme quantum limit. A metal–insulator transition is followed, at still larger fields, by transport consistent with a field-induced gap.
A closer reading
Do not collapse every high-field resistance increase into one mechanism. The critical scaling near the transition and the gapped response at higher fields address different regimes of the same crystal.