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Deep Insight Into the Electronic Structure of Ternary Topological Insulators: A Comparative Study of PbBi4Te7 and PbBi6Te10
Pacile, D., Eremeev, S. V., Caputo, M., Pisarra, M., De Luca, O., Grimaldi, I., Fujii, J., Aliev, Z. S., Babanly, M. B., Vobornik, I., Agostino, R. G., Goldoni, A., Chulkov, V. & Papagno, M., Dec-2018, In : Physica status solidi-Rapid research letters. 12, 12, 8 p., 1800341.Research output: Contribution to journal › Article › Academic › peer-review
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Deep Insight Into the Electronic Structure of Ternary Topological Insulators : A Comparative Study of PbBi4Te7 and PbBi6Te10. / Pacile, D.; Eremeev, S. V.; Caputo, M.; Pisarra, M.; De Luca, O.; Grimaldi, I.; Fujii, J.; Aliev, Z. S.; Babanly, M. B.; Vobornik, I.; Agostino, R. G.; Goldoni, A.; Chulkov, V.; Papagno, M.
In: Physica status solidi-Rapid research letters, Vol. 12, No. 12, 1800341, 12.2018.Research output: Contribution to journal › Article › Academic › peer-review
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TY - JOUR
T1 - Deep Insight Into the Electronic Structure of Ternary Topological Insulators
T2 - A Comparative Study of PbBi4Te7 and PbBi6Te10
AU - Pacile, D.
AU - Eremeev, S. V.
AU - Caputo, M.
AU - Pisarra, M.
AU - De Luca, O.
AU - Grimaldi, I.
AU - Fujii, J.
AU - Aliev, Z. S.
AU - Babanly, M. B.
AU - Vobornik, I.
AU - Agostino, R. G.
AU - Goldoni, A.
AU - Chulkov, V.
AU - Papagno, M.
PY - 2018/12
Y1 - 2018/12
N2 - By means of angle-resolved photoemission spectroscopy measurements, the electronic band structure of the three-dimensional PbBi4Te7 and PbBi6Te10 topological insulators is compared. The measurements clearly reveal coexisting topological and multiple Rashba-like split states close to the Fermi level for both systems. The observed topological states derive from different surface terminations, as confirmed by scanning tunneling microscopy measurements, and are well-described by the density functional theory simulations. Both the topological and the Rashba-like states reveal a prevalent two-dimensional character barely affected by air exposure. X-ray and valence band photoemission measurements suggest Rashba-like states stem from the van der Waals gap expansion, consistently with density functional theory calculations.
AB - By means of angle-resolved photoemission spectroscopy measurements, the electronic band structure of the three-dimensional PbBi4Te7 and PbBi6Te10 topological insulators is compared. The measurements clearly reveal coexisting topological and multiple Rashba-like split states close to the Fermi level for both systems. The observed topological states derive from different surface terminations, as confirmed by scanning tunneling microscopy measurements, and are well-described by the density functional theory simulations. Both the topological and the Rashba-like states reveal a prevalent two-dimensional character barely affected by air exposure. X-ray and valence band photoemission measurements suggest Rashba-like states stem from the van der Waals gap expansion, consistently with density functional theory calculations.
KW - density functional theory
KW - electronic structure
KW - photoemission
KW - scanning tunneling microscopy
KW - topological insulators
KW - SURFACE-STATES
KW - TRANSITION
KW - ORDER
U2 - 10.1002/pssr.201800341
DO - 10.1002/pssr.201800341
M3 - Article
VL - 12
JO - Physica status solidi-Rapid research letters
JF - Physica status solidi-Rapid research letters
SN - 1862-6270
IS - 12
M1 - 1800341
ER -
ID: 94853346