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Resonant X-ray Photoelectron Diffraction (RXPD) of magnetic molecules

English title Resonant X-ray Photoelectron Diffraction (RXPD) of magnetic molecules
Applicant Greber Thomas
Number 129861
Funding scheme Project funding (Div. I-III)
Research institution Physik-Institut Universität Zürich
Institution of higher education University of Zurich - ZH
Main discipline Condensed Matter Physics
Start/End 01.09.2010 - 31.08.2016
Approved amount 329'700.00
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All Disciplines (2)

Discipline
Condensed Matter Physics
Physical Chemistry

Keywords (5)

Photoemission (XPS); Photoelectron Diffraction (XPD); Surface; Nano; Molecules

Lay Summary (English)

Lead
Lay summary
X-ray Photoelectron diffraction (XPD), a sensitive method for atomic structure determination at surfaces, shall be further developed and applied to molecular systems with magnetic moments. Using synchrotron radiation it is possible to enhance the sensitivity of XPD by at least two orders of magnitude if the photon energy is tuned to resonant absorption. Furthermore, by using circularly polarized X-rays, the direction of the orbital magnetic moment will be measured at the same time. In this way, the new method will allow us to directly relate magnetic and structural properties of molecules, and to study the interaction of their magnetic moments with a ferromagnetic substrate. As model systems we will investigate the interaction of the spin moment of endofullerenes with magnetic substrates.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
Surface Aligned Magnetic Moments and Hysteresis of an Endohedral Single-Molecule Magnet on a Metal
Westerström Rasmus et al. (2015), Surface Aligned Magnetic Moments and Hysteresis of an Endohedral Single-Molecule Magnet on a Metal, in Physical Review Letters, 114, 087201-087205.
Tunneling, remanence, and frustration in dysprosium-based endohedral single-molecule magnets
Westerström Rasmus (2014), Tunneling, remanence, and frustration in dysprosium-based endohedral single-molecule magnets, in Physical Review B, 89, 060406.
An Endohedral Single-Molecule Magnet with Long Relaxation Times: DySc2N@C-80
Westerstrom R, Dreiser J, Piamonteze C, Muntwiler M, Weyeneth S, Brune H, Rusponi S, Nolting F, Popov A, Yang SF, Dunsch L, Greber T (2012), An Endohedral Single-Molecule Magnet with Long Relaxation Times: DySc2N@C-80, in JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 134(24), 9840-9843.
Resonant photoelectron diffraction with circularly polarized light
Morscher M, Nolting F, Brugger T, Greber T (2011), Resonant photoelectron diffraction with circularly polarized light, in PHYSICAL REVIEW B, 84(14), 140406-140410.

Collaboration

Group / person Country
Types of collaboration
IFW Dresden Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
NIST (Japan) Japan (Asia)
- Exchange of personnel

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Group Seminar ZX. Shen Individual talk From Double-deckers to Spin-shuttles: 4f Single Molecule magnets 06.06.2016 Stanford, United States of America Greber Thomas;
Korean Physical Society Meeting Talk given at a conference Accessing the magnetic content of endohedral fullerenes 21.04.2016 Daejong, Korean Republic (South Korea) Greber Thomas;
European conference on molecular magnetism Talk given at a conference Ferro- antiferromagnetic superexchange coupling: The role of the ligands in the Dy2ScN@C80 and Dy2TiC@C80 endofullerene nanomagnets 10.09.2015 Zaragossa, Spain Westerström Rasmus;
588 Heraus Seminar Talk given at a conference Angle scanned photoelectron diffraction: From Near Node Photoelectron Holography to Resonant Photoelectron diffraction 27.04.2015 Bad Honnef, Germany, Germany Greber Thomas;
ICSTAR15, Trivadrum, India Talk given at a conference Endohedral Rare Earth Single Molecule Magnets 24.04.2015 Trivadrum, India Greber Thomas;
SpinMol 2014 Talk given at a conference Looking inside spin-shuttles 28.10.2014 Monte Verita, Ascona, Switzerland Greber Thomas;
DPG, Frühjahrstagung, Hauptvortrag Talk given at a conference Building blocks for molecular spintronics: From C60 to Spin-Shuttles on surfaces 31.03.2014 Dresden, Germany Greber Thomas;
Condensed Matter Division 24 Talk given at a conference Carbon Cage Spin Shuttles 03.09.2012 Edinburgh, Great Britain and Northern Ireland Greber Thomas;


Associated projects

Number Title Start Funding scheme
124691 Spin physics and electron dynamics at surfaces, interfaces and in ordered molecular layers 01.04.2009 Project funding (Div. I-III)
147201 Nitride Cluster Fullerene Spin Shuttles: The role of cluster composition for single molecule magnet behavior 01.04.2014 Project funding (Div. I-III)
103328 Direct determination of adsorption induced structural changes in large molecules by Near Node Photoelectron Holography 01.08.2004 Project funding (Div. I-III)
121344 PEARL: A new bending-magnet endstation for state-of-the-art X-ray Photoelectron Diffraction combined with Scanning Tunneling Microscopy characterization at the Swiss Light Source 01.10.2009 R'EQUIP

Abstract

The X-ray photoelectron diffraction method shall be further explored with experiments with resonant excitation of core electrons. We aim to increase the sensitivity of the method by at least two orders of magnitude. If circularly polarized light is used the magnetisation and structural information may be obtained in a single experiment. The method will be applied for molecular spintronics systems on ferromagnetic substrates, where the magnetisation may be switched back an forth.
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