Doping-dependent charge- and spin-density wave orderings in a monolayer of Pb adatoms on Si(111)
(2024) In npj Quantum Materials 9(1).- Abstract
In this work we computed the phase diagram as a function of temperature and doping for a system of lead adatoms allocated periodically on a silicon (111) surface. This Si(111):Pb material is characterized by a strong and long-ranged Coulomb interaction, a relatively large value of the spin-orbit coupling, and a structural phase transition that occurs at low temperature. In order to describe the collective electronic behavior in the system, we perform many-body calculations consistently taking all these important features into account. We find that charge- and spin-density wave orderings coexist with each other in several regions of the phase diagram. This result is in agreement with the recent experimental observation of a chiral spin... (More)
In this work we computed the phase diagram as a function of temperature and doping for a system of lead adatoms allocated periodically on a silicon (111) surface. This Si(111):Pb material is characterized by a strong and long-ranged Coulomb interaction, a relatively large value of the spin-orbit coupling, and a structural phase transition that occurs at low temperature. In order to describe the collective electronic behavior in the system, we perform many-body calculations consistently taking all these important features into account. We find that charge- and spin-density wave orderings coexist with each other in several regions of the phase diagram. This result is in agreement with the recent experimental observation of a chiral spin texture in the charge density wave phase in this material. We also find that the geometries of the charge and spin textures strongly depend on the doping level. The formation of such a rich phase diagram in the Si(111):Pb material can be explained by a combined effect of the lattice distortion and electronic correlations.
(Less)
- author
- Vandelli, M. ; Galler, A. ; Rubio, A. ; Lichtenstein, A. I. ; Biermann, S. LU and Stepanov, E. A.
- organization
- publishing date
- 2024-12
- type
- Contribution to journal
- publication status
- published
- subject
- in
- npj Quantum Materials
- volume
- 9
- issue
- 1
- article number
- 19
- publisher
- Nature Publishing Group
- external identifiers
-
- scopus:85185255133
- ISSN
- 2397-4648
- DOI
- 10.1038/s41535-024-00630-w
- language
- English
- LU publication?
- yes
- id
- 3d0c4b2e-3e2c-4e87-be36-3a2bdb03b3fe
- date added to LUP
- 2024-03-14 11:19:52
- date last changed
- 2024-03-14 11:19:52
@article{3d0c4b2e-3e2c-4e87-be36-3a2bdb03b3fe,
abstract = {{<p>In this work we computed the phase diagram as a function of temperature and doping for a system of lead adatoms allocated periodically on a silicon (111) surface. This Si(111):Pb material is characterized by a strong and long-ranged Coulomb interaction, a relatively large value of the spin-orbit coupling, and a structural phase transition that occurs at low temperature. In order to describe the collective electronic behavior in the system, we perform many-body calculations consistently taking all these important features into account. We find that charge- and spin-density wave orderings coexist with each other in several regions of the phase diagram. This result is in agreement with the recent experimental observation of a chiral spin texture in the charge density wave phase in this material. We also find that the geometries of the charge and spin textures strongly depend on the doping level. The formation of such a rich phase diagram in the Si(111):Pb material can be explained by a combined effect of the lattice distortion and electronic correlations.</p>}},
author = {{Vandelli, M. and Galler, A. and Rubio, A. and Lichtenstein, A. I. and Biermann, S. and Stepanov, E. A.}},
issn = {{2397-4648}},
language = {{eng}},
number = {{1}},
publisher = {{Nature Publishing Group}},
series = {{npj Quantum Materials}},
title = {{Doping-dependent charge- and spin-density wave orderings in a monolayer of Pb adatoms on Si(111)}},
url = {{http://dx.doi.org/10.1038/s41535-024-00630-w}},
doi = {{10.1038/s41535-024-00630-w}},
volume = {{9}},
year = {{2024}},
}