TY  - SER
AU  - Gruznev,Dimitry V.
AU  - Matetskiy,Andrey V.
AU  - Tupchaya,Alexandra Yu
AU  - Alekseev,A.A.
AU  - Hsing,Cheng-Rong
AU  - Wei,Ching-Ming
AU  - Eremeev,Sergey V.
AU  - Zotov,Andrey V.
AU  - Saranin,Alexander A.
AU  - Bondarenko,Leonid V.
TI  - Electronic band structure of a Tl/Sn atomic sandwich on Si(111)
KW  - тантал
KW  - олово
KW  - электронная структура
KW  - кремний
KW  - Ферми уровень
KW  - статьи в журналах
N1  - Библиогр.: 37 назв
N2  - A two-dimensional compound made of one monolayer of Tl and one monolayer of Sn on Si(111) has been found to have a sandwichlike structure in which the Sn layer (having the milk-stool arrangement) resides on the bulklike terminated Si(111) surface and the Tl layer (having the honeycomb-chained-trimer arrangement) is located above the Sn layer. The electronic band structure of the compound contains two spin-split surface-state bands, of which one is nonmetallic and the other is metallic. Near the Fermi level the metallic band is split with the momentum splitting Δk∥=0.037 Å−1 and energy splitting ΔEF=167 meV. The steep dispersion of the band when crossing the Fermi level corresponds to an electron velocity of ≈8.5×105 m/s, which is comparable to the value reported for graphene. The 2D Fermi contours have almost circular shape with spin texture typical for hexagonal surfaces
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000553110
ER  -