Research output: Contribution to journal › Letter › peer-review
Deep Insight Into the Electronic Structure of Ternary Topological Insulators: A Comparative Study of PbBi4Te7 and PbBi6Te10. / Pacilè, 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, Evgueni V.; Papagno, M.
In: Physica Status Solidi - Rapid Research Letters, Vol. 12, No. 12, 1800341, 12.2018.Research output: Contribution to journal › Letter › peer-review
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TY - JOUR
T1 - Deep Insight Into the Electronic Structure of Ternary Topological Insulators: A Comparative Study of PbBi4Te7 and PbBi6Te10
AU - Pacilè, 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, Evgueni 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
UR - http://www.scopus.com/inward/record.url?scp=85054604318&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/deep-insight-electronic-structure-ternary-topological-insulators-comparative-study-pbbi4te7-pbbi6te1
U2 - 10.1002/pssr.201800341
DO - 10.1002/pssr.201800341
M3 - Letter
AN - SCOPUS:85054604318
VL - 12
JO - Physica Status Solidi - Rapid Research Letetrs
JF - Physica Status Solidi - Rapid Research Letetrs
SN - 1862-6254
IS - 12
M1 - 1800341
ER -
ID: 36281512