RKKY signatures as a probe for intrinsic magnetism and AI/QAH phase discrimination in MnBi${}_2$Te${}_4$ films

Ya-Xi Li, Zi-Jian Chen, Rui-Qiang Wang +2

We present a systematic study of the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in MnBi${}_2$Te${}_4$ films under both dark and illuminated conditions. In the dark, the intrinsic…