- Title
- Suppressed and enhanced spin polarization in the 1ML-Pb/Ge(1 1 1)-1 x 1 system
- Creator
- Szary, Maciej J.; Pieczyrak, Barbara; Jurczyszyn, Leszek; Radny, Marian W.
- Relation
- Applied Surface Science Vol. 466, Issue 1 February 2019, p. 224-229
- Publisher Link
- http://dx.doi.org/10.1016/j.apsusc.2018.10.028
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2019
- Description
- It is shown, based on the density functional theory (DFT), that the spin splitting of surface electronic states induced by a Pb monolayer on the Ge(1 1 1)-1 x 1 surface depends on the bonding structure of the Pb/Ge interface and may be either significant, 0.8 eV, (H3/T4) or completely suppressed (T1). It is also shown that for the former the bonding configuration facilitates an emergence of unquenched orbital angular momentum L along -K-M direction, which then lifts the spin degeneracy of the electronic states through the spin-orbit coupling (SOC) of electrons in Pb. Along with the DFT data, we present a complementary analysis conducted withing the orbital Rashba framework, which provides an additional insight into the SOC-induced splitting.
- Subject
- density functional theory; spin orbit coupling; spin-split surface states; band structure; electronic spin; Rashba effect
- Identifier
- http://hdl.handle.net/1959.13/1468365
- Identifier
- uon:48042
- Identifier
- ISSN:0169-4332
- Language
- eng
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