Research output: Contribution to journal › Article › peer-review
Interplay between exchange-split Dirac and Rashba-type surface states at the MnBi2Te4/BiTeI interface. / Zaitsev, N. L. ; Русинов, Игорь Павлович; Menshchikova, T. V. ; Чулков, Евгений Владимирович.
In: Physical Review B, Vol. 107, No. 4, 045402, 03.01.2023.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Interplay between exchange-split Dirac and Rashba-type surface states at the MnBi2Te4/BiTeI interface
AU - Zaitsev, N. L.
AU - Русинов, Игорь Павлович
AU - Menshchikova, T. V.
AU - Чулков, Евгений Владимирович
PY - 2023/1/3
Y1 - 2023/1/3
N2 - Based on ab initio calculations, we study the electronic structure of the BiTeI/MnBi2Te4 heterostructure interface composed of the antiferromagnetic topological insulator MnBi2Te4 and the polar semiconductor trilayer BiTeI. We found a significant difference in the electronic properties of the different contacts between the substrate and overlayer. While the case of a Te-Te interface forms a natural expansion of the substrate, when the Dirac cone state locates mostly in the polar overlayer region and undergoes a slight exchange splitting, the Te-I contact is the source of a four-band state contributed by the substrate Dirac cone and Rashba-type state of the polar trilayer. Owing to magnetic proximity, the pair of Kramers degeneracies for this state is lifted, which produces a Hall response in the transport regime. We believe our findings provide new opportunities to construct novel spintronic devices.
AB - Based on ab initio calculations, we study the electronic structure of the BiTeI/MnBi2Te4 heterostructure interface composed of the antiferromagnetic topological insulator MnBi2Te4 and the polar semiconductor trilayer BiTeI. We found a significant difference in the electronic properties of the different contacts between the substrate and overlayer. While the case of a Te-Te interface forms a natural expansion of the substrate, when the Dirac cone state locates mostly in the polar overlayer region and undergoes a slight exchange splitting, the Te-I contact is the source of a four-band state contributed by the substrate Dirac cone and Rashba-type state of the polar trilayer. Owing to magnetic proximity, the pair of Kramers degeneracies for this state is lifted, which produces a Hall response in the transport regime. We believe our findings provide new opportunities to construct novel spintronic devices.
UR - https://www.mendeley.com/catalogue/188645df-7884-393a-a683-7c6605fab789/
U2 - 10.1103/PhysRevB.107.045402
DO - 10.1103/PhysRevB.107.045402
M3 - Article
VL - 107
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 1098-0121
IS - 4
M1 - 045402
ER -
ID: 103174763