Probing the interaction between topological and Rashba-like surface states in MnBi2Te4 through Sn doping

Tarasov, A.V.; Estyunin, D.A.; Rybkin, A.G.; Frolov, A.S.; Sergeev, A.I.; Eryzhenkov, A.V.; Anferova, V.V.; Estyunina, T.P.; Glazkova, D.A.; Kokh, K.A.; Golyashov, V.A.; Tereshchenko, O.E.; Ideta, S.; Miyai, Y.; Kumar, Y.; Shimada, K.; Shikin, A.M.

Авторы: Tarasov A.V., Estyunin D.A., Rybkin A.G., Frolov A.S., Sergeev A.I., Eryzhenkov A.V., Anferova V.V., Estyunina T.P., Glazkova D.A., Kokh K.A., Golyashov V.A., Tereshchenko O.E., Ideta S., Miyai Y., Kumar Y., Shimada K., Shikin A.M.
Журнал: Physical Review B
Том: 111
Номер: 16
Год издания: 2025
Издательство: American Physical Society
Местоположение издательства: United States
Номер статьи: 165115
DOI: 10.1103/physrevb.111.165115
Аннотация: The presence of Rashba-like surface states (RSS) in the electronic structure of topological insulators (TIs) has been a longstanding topic of interest due to their significant impact on electronic and spin structures. In this study, we investigate the interaction between topological and Rashba-like surface states (TSS and RSS) in Mn1−xSnxBi2Te4 systems using density functional theory (DFT) calculations and high-resolution ARPES. Our findings reveal that increasing Sn concentration shifts RSS downward in energy, enhancing their influence on the electronic structure near the Fermi level. ARPES validates these predictions, capturing the evolution of RSS and their hybridization with TSS. Orbital analysis shows RSS are localized within the first three Te-Bi-Te trilayers, dominated by Bi-p orbitals, with evidence of the orbital Rashba effect enhancing spin-momentum locking. At higher Sn concentrations, RSS penetrate deeper into the crystal, driven by Sn-p-orbital contributions. These results position Mn1−xSnxBi2Te4 as a tunable platform for tailoring electronic properties in spintronic and quantum technologies
Добавил в систему: Сергеев Антон Игоревич

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Probing the interaction between topological and Rashba-like surface states in MnBi2Te4 through Sn dopingстатья