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On-Surface Magnetochemistry

English title On-Surface Magnetochemistry
Applicant Jung Thomas
Number 153549
Funding scheme Project funding (Div. I-III)
Research institution Mikro- und Nanotechnologie Paul Scherrer Institut
Institution of higher education Paul Scherrer Institute - PSI
Main discipline Condensed Matter Physics
Start/End 01.04.2014 - 30.09.2017
Approved amount 200'551.00
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All Disciplines (4)

Discipline
Condensed Matter Physics
Physical Chemistry
Inorganic Chemistry
Material Sciences

Keywords (10)

X-ray Photon Emission Electron Microscopy (PEEM); Porphyrins and Phthalocyanines; Square Planar Magnetic Molecules; Scanning Tunneling Spectroscopy (STS); X-ray Magnetic Circular Dichroism (XMCD); Scanning Tunneling Microscopy (STM) ; X-ray Absorption Spectroscopy (XAS); Magnetochemistry On Surfaces; Molecular Spintronics; Spectro-Microscopy Correlation

Lay Summary (German)

Lead
Magnetische Moleküle, seit längerem bekannt, enthalten ein ungepaartes Elektron welches z.B in einem enthaltenen magnetischen Atom. Überraschenderweise werden die erst nur marginal magnetischen (paramagnetischen) Moleküle an magnetischen Grenzflächen zu starken Magneten mit hoher Curietemperatur, vergleichbar mit starken im Alltag eingesetzten Magneten. Aufgrund des neuen Effekts ist das Verhalten der magnetischen Moleküle an Grenzflächen in vielen wichtigen Eigenschaften noch unerforscht und unverstanden.
Lay summary

 Inhalt und Ziel des Forschungsprojekts

Unser übergeordnetes Ziel ist es die Kopplung zwischen magnetischen Molekülen und ebenfalls magnetischen Substraten genauer zu verstehen, auch im Hinblick auf Anwendungen in der organischen Spintronik z.B. als Datenspeicherelemente oder als Sensoren. Spezifisch geht es in diesem Projekt darum, eine neue Methode – die Photoelektronenmikroskopie – zu verwenden um die Austauschwechselwirkung via  physikalische Wechselwirkungen und chemischen Bindungenen zu studieren. Bisher sehr erfolgreiche Experimente an der Swiss Light Source werden systematisch weitergeführt; und ein neuer Experimentiermodus zur Erforschung der Zeitauflösung wird in Betrieb genommen. Für neue theoretisch mögliche Interaktionsmechanismen wird versucht Beispiele zu finden und zu studieren.

 

Wissenschaftlicher und gesellschaftlicher Kontext des Forschungsprojekts

Die Steuerung der Eigenschaften von Grenzflächen für die organische Spintronik ist ein interessantes und aktuelles Forschungsthema (siehe auch den Youtube  Beitrag http://www.youtube.com/watch?v=V1_QKJs4NaI welcher sich an ein wissenschaftlich / technisch interessiertes Publikum richtet) Es ist für die Diskussion über zukünftige Technologien entscheidend rechtzeitig genaue Resultate und ein möglichst konsolidiertes fundamentales Verständnis der magnetischen Austauschkopplung an diesen Grenzflächen zu haben.

 

Keywords

Organic Spintronics, On-Surface Magnetochemistry, Exchange Coupling, On-Surface Coordination Chemistry, Scanning Tunneling Microscopy, X-ray Magnetic Circular Dichroism, Photoemision Electron Microscopy.

Direct link to Lay Summary Last update: 24.06.2014

Responsible applicant and co-applicants

Employees

Publications

Publication
Structural Characterization of a Covalent Monolayer Sheet Obtained by Two-Dimensional Polymerization at an Air/Water Interface
Müller Vivian, Shao Feng, Baljozovic Milos, Moradi Mina, Zhang Yao, Jung Thomas, Thompson William B., King Benjamin T., Zenobi Renato, Schlüter A. Dieter (2017), Structural Characterization of a Covalent Monolayer Sheet Obtained by Two-Dimensional Polymerization at an Air/Water Interface, in Angewandte Chemie International Edition.
Two-Dimensional Calix[4]arene-based Metal-Organic Coordination Networks of Tunable Crystallinity
Moradi Mina, Tulli Ludovico G., Nowakowski Jan, Baljozovic Milos, Jung Thomas A., Shahgaldian Patrick (2017), Two-Dimensional Calix[4]arene-based Metal-Organic Coordination Networks of Tunable Crystallinity, in Angewandte Chemie International Edition.
Long-range ferrimagnetic order in a two-dimensional supramolecular Kondo lattice
Girovsky Jan, Nowakowski Jan, Ali Md. Ehesan, Baljozovic Milos, Rossmann Harald R., Nijs Thomas, Aeby Elise A., Nowakowska Sylwia, Siewert Dorota, Srivastava Gitika, Wäckerlin Christian, Dreiser Jan, Decurtins Silvio, Liu Shi-Xia, Oppeneer Peter M., Jung Thomas A., Ballav Nirmalya (2017), Long-range ferrimagnetic order in a two-dimensional supramolecular Kondo lattice, in Nature Communications, 8, 15388-15388.
Probing the Reactivity of Functionalized Surfaces by Porphyrin Metalation
Nowakowski Jan, Nowakowska Sylwia, Srivastava Gitika, Baljozovic Milos, Girovsky Jan, Ballav Nirmalya, Jung Thomas A. (2016), Probing the Reactivity of Functionalized Surfaces by Porphyrin Metalation, in ChemistrySelect, 1(5), 891-895.

Collaboration

Group / person Country
Types of collaboration
Armin Kleibert, SIM beamline, SLS, PSI Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Matthias Muntwiler, PEARL beamline, SLS, PSI Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Silvio Decurtins, University of Bern, Bern Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Nirmalya Ballav, IISER Pune India (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
Jan Dreiser, X-Treme beamline, SLS, PSI Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Peter Oppeneer, University of Uppsala Sweden (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Operating Quantum States in Atoms and Molecules at Surfaces Talk given at a conference Unravelling surface enabled phenomena in low dimensional molecular systems 10.09.2017 Monte Verita, Ascona, Switzerland Baljozovic Milos;
12th molCHsurf discussion meeting Talk given at a conference Long range ferrimagnetic order in two-dimensional supramolecular Kondo lattice 16.06.2017 Bern, Switzerland Baljozovic Milos;
SLS symposium on Magnetism Individual talk Unravelling surface enabled phenomena in low dimensional systems 13.06.2017 Villigen PSI, Switzerland Baljozovic Milos;
Stanford University Optics Seminar Individual talk Unravelling surface enabled phenomena in low dimensional systems 20.03.2017 Stanford University, Stanford, United States of America Baljozovic Milos;
APS march meeting Talk given at a conference Unravelling surface enabled magnetic phenomena in low dimensional systems 13.03.2017 New Orleans, United States of America Baljozovic Milos;
NIST ELECTRON PHYSICS GROUP SEMINAR Individual talk Unraveling surface enabled phenomena in low dimensional systems 09.03.2017 NIST, Gaithersburg, United States of America Baljozovic Milos;
PSI LMN science talk Individual talk Unravelling surface enabled magnetic phenomena by spectro-microscopy correlation using X-ray photons and scanning probes 15.12.2016 Villigen PSI, Switzerland Baljozovic Milos;
2nd International Meeting on Materials Science for Energy Related Applications Talk given at a conference Physics and chemistry on-surfaces: Interface materials created via surface engineering 30.09.2016 Belgrade, Serbien Baljozovic Milos;
26th European Physical Society – Condensed Matter Division (CMD26) conference Talk given at a conference Long range ferrimagnetic ordering in 2D chessboard-like molecular layer 09.09.2016 Groningen, Netherlands Baljozovic Milos;
Vacuum Ultraviolet and X-ray Physics (VUVX2016) conference Poster 2D-ferrimagnetic ordering in chessboard-like molecular layer on Au(111) probed by Xray Magnetic Circular Dichroism 03.08.2016 Zurich, Switzerland Baljozovic Milos;
Vacuum Ultraviolet and X-ray Physics (VUVX2016) conference Poster Investigation of unexpected antiferromagnetic interaction of CrTPP molecules with bare cobalt thin film 03.08.2016 Zurich, Switzerland Baljozovic Milos;
Spring Meeting of European Materials Research Society (E-MRS) Talk given at a conference 2D-ferrimagnetic ordering in chessboard-like molecular ad-layer on Au(111) 02.05.2016 Lille, France Baljozovic Milos;
Institute of Physics (IOP) – Magnetism 2016 conference Talk given at a conference 2D-ferrimagnetic ordering in a chessboard-like molecular layer on Au(111) 04.04.2016 Sheffield, Great Britain and Northern Ireland Baljozovic Milos;
Spring Meeting of German Physical Society (DPG) Talk given at a conference Long-range 2D-ferrimagnetic ordering in a chessboard-like supramolecular Kondo lattice 06.03.2016 Regensburg, Germany Baljozovic Milos;
5th European Conference on Molecular Magnetism (ECMM) Poster Tuning the magneto-chemical interaction of spinbearing molecules with ferromagnetic substrates by use of nitrogen and chlorine spacer layers 06.09.2015 Zaragoza, Spain Baljozovic Milos;
International Conference on Magnetism (ICM) Poster Magnetic coupling of MnTPP(Cl) molecules to magnetic substrates investigated by X-ray photo-emission electron microscopy 05.07.2015 Barcelona, Spain Baljozovic Milos;
Institute of Physics (IOP) - Theory meets experiment: Molecular Nanoscience and Applications conference Talk given at a conference Unraveling the unexpected antiferromagnetic coupling of CrTPP molecules to a bare cobalt thin film 01.06.2015 London, Great Britain and Northern Ireland Baljozovic Milos;
PSI LMN science talk Individual talk Investigation of magneto-chemical interaction of spin-bearing molecules with ferromagnetic substrate via nitrogen and chlorine spacer layers 28.05.2015 Villigen PSI, Switzerland Baljozovic Milos;
DPG meeting Talk given at a conference Antiferromagnetic exchange coupling of Cr-porphyrine to a bare cobalt substrate 15.03.2015 Berlin, Germany Girovsky Jan;
SAOG meeting Poster Antiferromagnetic exchange coupling of Cr-porphyrine to a bare cobalt substrate 23.01.2015 Fribourg, Switzerland Girovsky Jan;
Seminar, TU Delft, The Netherlands Individual talk Exchange coupling of magnetic molecules to magnetic and non-magnetic substrates 10.12.2014 Delft, Netherlands Girovsky Jan;
SpinMol Poster Antiferromagnetic exchange coupling of Cr-porphyrine to a bare cobalt substrate 26.10.2014 Monte Verita, Switzerland Girovsky Jan;
Spintronics and Magnetochemistry on the Atomic and Molecular Level conference (SPINMOL) Poster Investigation of the magneto-chemical interaction of spin-bearing molecules with ferromagnetic substrates via nitrogen and chlorine spacer layers 26.10.2014 Monte Verita, Ascona, Switzerland Baljozovic Milos;
Swiss Nanoscience Institute (SNI) Annual Meeting 2014 Talk given at a conference Magnetic exchange coupling of MnTPPCl molecules to a ferromagnetic substrate investigated by X-ray Photo-Emission Electron Microscopy 11.09.2014 Lenzerheide, Switzerland Baljozovic Milos;
Swiss Physical Society (SPS) Annual Meeting 2014 Poster Magnetic exchange coupling of MnTPPCl molecules to a ferromagnetic substrate investigated by X-ray Photo-Emission Electron Microscopy 30.06.2014 Fribourg, Switzerland Baljozovic Milos;
ICPP8 - Eighth International Conference on Porphyrins and Phthalocyanines Talk given at a conference On-surface magneto-chemistry 22.06.2014 Istanbul, Turkey Girovsky Jan;
European Materials Research Society Talk given at a conference Chemically programmable 2D Electron Spin Arrays 26.05.2014 Lille, France Girovsky Jan;
Magnetism 2014 - IOP Conference Series Talk given at a conference Controlling spin-exchange at the organic/inorganic interface: On-surface magneto-chemistry 07.04.2014 Manchester, Great Britain and Northern Ireland Girovsky Jan;


Knowledge transfer events

Active participation

Title Type of contribution Date Place Persons involved
Visit and Meeting with LG Display at Paul Scherrer Institut, Villigen  Talk 22.09.2015 Villigen PSI, Switzerland Baljozovic Milos;


Communication with the public

Communication Title Media Place Year
Other activities Article metrics International 2017
New media (web, blogs, podcasts, news feeds etc.) Magnetic order in a two-dimensional molecular chessboard Uppsala University news International 2017
New media (web, blogs, podcasts, news feeds etc.) Wafer-thin Magnetic Materials Developed for Future Quantum Technologies PSI release International German-speaking Switzerland 2017

Awards

Title Year
Best poster prize at SAOG 2014 conference 2014

Associated projects

Number Title Start Funding scheme
144991 Thermal Desorption Mass Spectrometry for the Investigation of on-surface Chemistry and Supramolecular Chemistry 01.10.2013 R'EQUIP
113149 Monochromatised X-ray Photoelectron Spectroscopy (XPS) and low current Scanning Tunneling Microscopy (STM) imaging for the study, of organic monolayers in preparation of SLS surface science beamtimes 01.07.2006 R'EQUIP
121461 Scanning Tunneling Microscopy and Spectroscopy at variable Temperatures for the physical and chemical investigation of surface mounted supra-molecular assemblies. 01.07.2008 R'EQUIP
149713 Neue Einsichten in die Sonden-Proben-Wechselwirkung bei den Rastersondenmethoden 01.10.2013 Project funding (Div. I-III)
132868 Controlling Spins in Molecular Adsorbates by a Chemical Switch 01.02.2011 Project funding (Div. I-III)
132868 Controlling Spins in Molecular Adsorbates by a Chemical Switch 01.02.2011 Project funding (Div. I-III)

Abstract

On-surface magneto-chemistry involves the control of spin-bearing electronic states by the interplay of chemical and physical interactions at organic-inorganic interfaces. This field of research is relevant to organic electronics and spintronics and emerged after the first observation of the ferromagnetic exchange interaction between paramagnetic molecules (Mn-tetraphenylporphyrinchloride) and a ferromagnetic Co substrate at room temperature in a X-ray Magnetic Circular Dichroism (XMCD) experiment. Significant progress has been achieved by careful spectro-microscopy correlation experiments in the sense that external ligands can be also used to control the spin-state of ad-molecules. The numerical modelling of these often reversible processes lead to an in-depth understanding of the underlying mechanisms: The chemical ligand (NO, NH3, etc) and the bottom surface substrate acting different but in competition on the electron and spin states of the ad-molecule. In this follow-up proposal - the group plans to continue to explore magneto-chemical interactions at interfaces by combining XMCD with other photoelectron based surface spectroscopy techniques like X-ray Photoelectron Spectroscopy and Ultra-violet photoelectron Spectroscopy; and scanning tunneling microscopy (STM) at variable temperatures by modifying some more of the important parameters at these organic-inorganic spin-interfaces. Furthermore the group is ready to implement new experimental techniques in collaboration with SLS-SIM staff. This involves space and time resolved combined XMCD-XPEEM (X-ray Photo-Emission Electron Microscopy), as established in successful first experiments (manuscript submitted) which provide a new access to some of the interesting questions at these interfaces like the origin of magnetisation from the interplay of the different materials. These primarily fundamental studies reveal new insight into the magneto-chemistry of model metal-organic interfaces which are relevant for molecular spintronic applications
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