Header

UZH-Logo

Maintenance Infos

Spin- and angle-resolved photoemission spectroscopy study of heptahelicene layers on Cu(111) surfaces


Baljozović, Miloš; Arnoldi, Benito; Grass, Stéphane; Lacour, Jerome; Aeschlimann, Martin; Stadtmüller, Benjamin; Ernst, Karl-Heinz (2023). Spin- and angle-resolved photoemission spectroscopy study of heptahelicene layers on Cu(111) surfaces. Journal of Chemical Physics, 159(4):044701.

Abstract

It has been demonstrated previously that electrons interact differently with chiral molecules depending on their polarization. For enantiomeric pure monolayers of heptahelicene, opposite asymmetries in spin polarization were reported and attributed to the so-called chirality-induced spin selectivity effect. However, these promising proof-of-concept photoemission experiments lack the angular and energy resolution that could provide the necessary insights into the mechanism of this phenomenon. In order to fill in the missing gaps, we provide a detailed spin- and angle-resolved photoemission spectroscopy study of heptahelicene layers on a Cu(111) substrate. Throughout the large accessible energy and angle range, no chirality induced spin asymmetry in photoemission could be observed. Possible reasons for the absence of signatures of the spin-dependent electron transmission through the chiral molecular layer are briefly discussed.

Abstract

It has been demonstrated previously that electrons interact differently with chiral molecules depending on their polarization. For enantiomeric pure monolayers of heptahelicene, opposite asymmetries in spin polarization were reported and attributed to the so-called chirality-induced spin selectivity effect. However, these promising proof-of-concept photoemission experiments lack the angular and energy resolution that could provide the necessary insights into the mechanism of this phenomenon. In order to fill in the missing gaps, we provide a detailed spin- and angle-resolved photoemission spectroscopy study of heptahelicene layers on a Cu(111) substrate. Throughout the large accessible energy and angle range, no chirality induced spin asymmetry in photoemission could be observed. Possible reasons for the absence of signatures of the spin-dependent electron transmission through the chiral molecular layer are briefly discussed.

Statistics

Citations

Altmetrics

Downloads

1 download since deposited on 18 Feb 2024
1 download since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Chemistry
Dewey Decimal Classification:540 Chemistry
Scopus Subject Areas:Physical Sciences > General Physics and Astronomy
Physical Sciences > Physical and Theoretical Chemistry
Uncontrolled Keywords:Physical and Theoretical Chemistry, General Physics and Astronomy
Language:English
Date:28 July 2023
Deposited On:18 Feb 2024 15:15
Last Modified:30 Jun 2024 03:32
Publisher:American Institute of Physics
ISSN:0021-9606
OA Status:Hybrid
Publisher DOI:https://doi.org/10.1063/5.0156581
PubMed ID:37486054
Project Information:
  • : FunderSNSF
  • : Grant ID182082
  • : Project TitleAdvanced Molecular Chiral Surface Systems
  • Content: Published Version
  • Language: English
  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)