Targeted FIB cleaving of RuO2 surfaces shows ARPES signals are dominated by termination-dependent surface states with strong Rashba-type spin splittings from Ru 4d spin-orbit coupling, disentangled from bulk bands via DFT comparison.
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Disentangling bulk and surface electronic structure using targeted cleave planes in RuO$_2$
Targeted FIB cleaving of RuO2 surfaces shows ARPES signals are dominated by termination-dependent surface states with strong Rashba-type spin splittings from Ru 4d spin-orbit coupling, disentangled from bulk bands via DFT comparison.