RKKY interactions yield distinct signatures that discriminate axion insulator phases in even-layer MnBi2Te4 films from quantum anomalous Hall phases in odd-layer films, both in the dark and under circularly polarized light.
In contrast, pla c- ing impurities on di fferent surfaces yields distinct magnetic signals, which can also distinguish between even-SL ( λ= −) and odd-SL ( λ= + ) films
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RKKY signatures as a probe for intrinsic magnetism and AI/QAH phase discrimination in MnBi$_2$Te$_4$ films
RKKY interactions yield distinct signatures that discriminate axion insulator phases in even-layer MnBi2Te4 films from quantum anomalous Hall phases in odd-layer films, both in the dark and under circularly polarized light.