Details
| Original language | English |
|---|---|
| Article number | 035432 |
| Journal | Physical Review B |
| Volume | 96 |
| Issue number | 3 |
| Publication status | Published - 24 Jul 2017 |
Abstract
Monolayer structures of Pb on Si(111) attracted recently considerable interest as superconductivity was found in these truly two-dimensional (2D) structures. In this study, we analyzed the electronic surface band structure of the so-called striped incommensurate Pb phase with 43 ML coverage by means of spin-resolved photoemission spectroscopy. Our results fully agree with density functional theory calculations done by Ren et al. [Phys. Rev. B 94, 075436 (2016)1098-012110.1103/PhysRevB.94.075436]. We observe a local Zeeman-type splitting of a fully occupied and spin-polarized surface band at the K̄3 points. The growth of this densely packed Pb structure results in the formation of imbalanced rotational domains, which triggered the detection of C3v symmetry forbidden spin components for surface states around the Fermi energy. Moreover, the Fermi surface of the metallic surface state of this phase is Rashba spin split and revealed a pronounced warping. However, the 2D nesting vectors are incommensurate with the atomic structure, thus keeping this system rather immune against charge density wave formation and possibly enabling a superconducting behavior.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B, Vol. 96, No. 3, 035432, 24.07.2017.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Spin-resolved band structure of a densely packed Pb monolayer on Si(111)
AU - Brand, C.
AU - Muff, S.
AU - Fanciulli, Mauro
AU - Pfnür, Herbert
AU - Tringides, M. C.
AU - Dil, Jan Hugo
AU - Tegenkamp, Christoph
PY - 2017/7/24
Y1 - 2017/7/24
N2 - Monolayer structures of Pb on Si(111) attracted recently considerable interest as superconductivity was found in these truly two-dimensional (2D) structures. In this study, we analyzed the electronic surface band structure of the so-called striped incommensurate Pb phase with 43 ML coverage by means of spin-resolved photoemission spectroscopy. Our results fully agree with density functional theory calculations done by Ren et al. [Phys. Rev. B 94, 075436 (2016)1098-012110.1103/PhysRevB.94.075436]. We observe a local Zeeman-type splitting of a fully occupied and spin-polarized surface band at the K̄3 points. The growth of this densely packed Pb structure results in the formation of imbalanced rotational domains, which triggered the detection of C3v symmetry forbidden spin components for surface states around the Fermi energy. Moreover, the Fermi surface of the metallic surface state of this phase is Rashba spin split and revealed a pronounced warping. However, the 2D nesting vectors are incommensurate with the atomic structure, thus keeping this system rather immune against charge density wave formation and possibly enabling a superconducting behavior.
AB - Monolayer structures of Pb on Si(111) attracted recently considerable interest as superconductivity was found in these truly two-dimensional (2D) structures. In this study, we analyzed the electronic surface band structure of the so-called striped incommensurate Pb phase with 43 ML coverage by means of spin-resolved photoemission spectroscopy. Our results fully agree with density functional theory calculations done by Ren et al. [Phys. Rev. B 94, 075436 (2016)1098-012110.1103/PhysRevB.94.075436]. We observe a local Zeeman-type splitting of a fully occupied and spin-polarized surface band at the K̄3 points. The growth of this densely packed Pb structure results in the formation of imbalanced rotational domains, which triggered the detection of C3v symmetry forbidden spin components for surface states around the Fermi energy. Moreover, the Fermi surface of the metallic surface state of this phase is Rashba spin split and revealed a pronounced warping. However, the 2D nesting vectors are incommensurate with the atomic structure, thus keeping this system rather immune against charge density wave formation and possibly enabling a superconducting behavior.
UR - http://www.scopus.com/inward/record.url?scp=85026346565&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.96.035432
DO - 10.1103/PhysRevB.96.035432
M3 - Article
AN - SCOPUS:85026346565
VL - 96
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 3
M1 - 035432
ER -