Quantum anomalous Hall effect (QAHE) and the quantum spin Hall effect (QSHE)
https://www.powershow.com/viewht/fa456-ZDc1Z/Quantum_anomalous_Hall_effect_QAHE_and_the_quantum_spin_Hall_effect_QSHE_powerpoint_ppt_presentation
 and the quantum spin Hall effect (QSHE)&media=https://s3.amazonaws.com/images.powershow.com/P1254325926jKQai.pr.jpg)
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