Journal
PHYSICAL REVIEW B
Volume 76, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.76.073407
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Spin-orbit coupling, e.g., in the form of the Rashba effect, is of high interest due to its role in novel spintronic devices. In connection with the question whether spin-orbit splittings can be induced in a thin film by a buried interface, there is a current controversy as to the origin of measured energy splittings in Mg quantum-well films on W(110) [C. Koitzsch , Phys. Rev. Lett. 95, 126401 (2005); F. Schiller , ibid. 95, 126402 (2005)]. This problem is resolved by comparing Mg/W(110) with Mg/Mo(110) data. At variance with both previous reports, strong interaction of Mg states with surface states of the substrate is identified as the origin of the observations in question.
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