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Neue Einsichten in die Sonden-Proben-Wechselwirkung bei den Rastersondenmethoden

English title New Insight into Tip-Sample Interaction by Scanning Probe Methods
Applicant Meyer Ernst
Number 175501
Funding scheme Project funding (Div. I-III)
Research institution Departement Physik Universität Basel
Institution of higher education University of Basel - BS
Main discipline Condensed Matter Physics
Start/End 01.10.2017 - 30.09.2019
Approved amount 593'657.00
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Keywords (18)

non-contact force microscopy; Kelvin force microscopy; surface science; true atomic resolution by AFM in ultrahigh vacuum; STM; SPM; scanning tunneling microscopy; SFM; force microscopy; atomic and molecular resolution; atomic friction; Majorana fermions; superlubricity; local density of states; chemical forces; frictional forces; adhesion; friction

Lay Summary (German)

Lead
Rastersondenmikroskope, wie das Rastertunnelmikroskop (STM) oder das Rasterkraftmikroskop (AFM), haben sich als sehr leistungsfähige Mikroskope mit atomarer Auflösung etabliert. Dass diese Methoden auch zur Untersuchung von lokalen physikalischen Eigenschaften, wie Magnetismus oder elektronischer Leitfähigkeit, verwendet werden können, ist noch Gegenstand von intensiven Untersuchungen.
Lay summary

 Inhalt und Ziel des Forschungsprojekts

 

Es werden Eisendrähte mit einem Durchmesser von einem Atom und einer Länge von bis zu  100 Nanometer auf supraleitenden Oberflächen gewachsen. Die strukturellen Daten werden mittels AFM im Hochauflösungsmodus (mittels eines CO Moleküls am Ende der Spitze) untersucht. Die elektronische Zustandsdichte wird mittels Tunnelspektroskopie untersucht. Speziell wird das Ende der Drähte untersucht, wo ein erhöhte Zustandsdichte um 0V erwartet wird, was mit der Existenz von Majorana Fermionen zusammenhängt.   Ferner werden einzelne polymerartige Moleküle untersucht. Wiederum werden die strukturellen Eigenschaften mittels hochauflösendem AFM bestimmt. Anschliessend werden die Moleküle mit Hilfe der Spitze des AFMs über die Oberfläche gezogen, bzw. von der Oberfläche entfernt. Daraus können Rückschlüsse über mechanische Eigenschaften wie Reibung und Adhäsion gezogen werden. Ferner werden auch optische Eigenschaften dieser Moleküldrähte untersucht.

 

Wissenschaftlicher und gesellschaftlicher Kontext des Forschungsprojekts

 

Reibung führt zu grossen Energieverlusten in mechanischen Bauelementen. Eine Reduktion von Reibungskräften in Motoren kann zu grossen, weltweiten Energieeinsparungen führen. Das Verständnis von diesen Reibungskräften ist immer noch sehr oberflächlich und erst in den letzten Jahren wurden die physikalische Grundlagen untersucht. So wurde beobachtet, dass es möglich ist praktisch reibungsfrei über Oberflächen zu gleiten, wenn die Grenzflächen bestimmte strukturelle und chemische Eigenschaften haben. Dieses Phänomen wird Superlubrizität genannt und ist ein vielversprechendes Konzept, dass in einigen Jahren auch in der Technik eingesetzt werden könnte. Majorana Fermionen wurden theoretisch vorausgesagt, aber erst in den letzten Jahren wurden Systemen aus Kombinationen von magnetischen Drähten und supraleitenden Oberflächen gefunden, die darauf hinweisen, dass diese Teilchen beobachtet und eventuell auch kontrolliert werden können. Dies könnte für zukünftige Quantencomputer von Interesse sein.

 

Direct link to Lay Summary Last update: 29.09.2017

Responsible applicant and co-applicants

Employees

Publications

Publication
A Langevin equation that governs the irregular stick-slip nano-scale friction
Jannesar M., Sadeghi A., Meyer E., Jafari G. R. (2019), A Langevin equation that governs the irregular stick-slip nano-scale friction, in SCIENTIFIC REPORTS, 9, s41598-019.
Altering the Properties of Graphene on Cu(111) by Intercalation of Potassium Bromide
Schulzendorf Mathias, Hinaut Antoine, Kisiel Marcin, Joehr Res, Pawlak Remy, Restuccia Paolo, Meyer Ernst, Righi Maria Clelia, Glatzel Thilo (2019), Altering the Properties of Graphene on Cu(111) by Intercalation of Potassium Bromide, in ACS NANO, 13(5), 5485-5492.
Band Gap of Atomically Precise Graphene Nanoribbons as a Function of Ribbon Length and Termination
Talirz Leopold, Sode Hajo, Kawai Shigeki, Ruffieux Pascal, Meyer Ernst, Feng Xinliang, Muellen Klaus, Fasel Roman, Pignedoli Carlo A., Passerone Daniele (2019), Band Gap of Atomically Precise Graphene Nanoribbons as a Function of Ribbon Length and Termination, in CHEMPHYSCHEM, 20(18, SI), 2348-2353.
Characterization of hydrogen plasma defined graphene edges
Rehmann Mirko K., Kalyoncu Yemliha B., Kisiel Marcin, Pascher Nikola, Giessibl Franz J., Muller Fabian, Watanabe Kenji, Taniguchi Takashi, Meyer Ernst, Liu Ming-Hao, Zumbuhl Dominik M. (2019), Characterization of hydrogen plasma defined graphene edges, in CARBON, 150, 417-424.
Chemical and morphological characterization of photoactive SiOx films electrodeposited on Pt substrate
Krywko-Cendrowska Agata, Marot Laurent, Steiner Roland, Mathys Daniel, Meyer Ernst, Szklarczyk Marek (2019), Chemical and morphological characterization of photoactive SiOx films electrodeposited on Pt substrate, in JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 832, 311-320.
Comparing a porphyrin- and a coumarin-based dye adsorbed on NiO(001)
Freund Sara, Hinaut Antoine, Marinakis Nathalie, Constable Edwin C., Meyer Ernst, Housecroft Catherine E., Glatzel Thilo (2019), Comparing a porphyrin- and a coumarin-based dye adsorbed on NiO(001), in BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 10, 874-881.
Conformations and cryo-force spectroscopy of spray-deposited single-strand DNA on gold
Pawlak Remy, Vilhena J. G., Hinaut Antoine, Meier Tobias, Glatzel Thilo, Baratoff Alexis, Gnecco Enrico, Perez Ruben, Meyer Ernst (2019), Conformations and cryo-force spectroscopy of spray-deposited single-strand DNA on gold, in NATURE COMMUNICATIONS, 10, s41467-019.
Controlled switching of a single CuPc molecule on Cu(111) at low temperature
Fremy-Koch Sweetlana, Sadeghi Ali, Pawlak Remy, Kawai Shigeki, Baratoff Alexis, Goedecker Stefan, Meyer Ernst, Glatzel Thilo (2019), Controlled switching of a single CuPc molecule on Cu(111) at low temperature, in PHYSICAL REVIEW B, 100(15), 155427.
Detachment Dynamics of Graphene Nanoribbons on Gold
Gigli Lorenzo, Kawai Shigeki, Guerra Roberto, Manini Nicola, Pawlak Remy, Feng Xinliang, Muellen Klaus, Ruffieux Pascal, Fasel Roman, Tosatti Erio, Meyer Ernst, Vanossi Andrea (2019), Detachment Dynamics of Graphene Nanoribbons on Gold, in ACS NANO, 13(1), 689-697.
Deuterium as a cleaning gas for ITER first mirrors: experimental study on beryllium deposits from laboratory and JET-ILW
Ben Yaala M., Moser L., Steiner R., Butoi B., Dinca P., Petersson P., Marot L., Meyer E. (2019), Deuterium as a cleaning gas for ITER first mirrors: experimental study on beryllium deposits from laboratory and JET-ILW, in NUCLEAR FUSION, 59(9), ab2d31.
Effective determination of surface potential landscapes from metal-organic nanoporous network overlayers
Piquero-Zulaica Ignacio, Abd El-Fattah Zakaria M., Popova Olha, Kewai Shigeki, Nowakowska Sylwia, Matena Manfred, Enache Mihaela, Stohr Meike, Tejeda Antonio, Taleb Amina, Meyer Ernst, Enrique Ortega J., Gade Lutz H., Jung Thomas A., Lobo-Checa Jorge (2019), Effective determination of surface potential landscapes from metal-organic nanoporous network overlayers, in NEW JOURNAL OF PHYSICS, 21, ab150e.
Majorana fermions in magnetic chains
Pawlak Remy, Hoffman Silas, Klinovaja Jelena, Loss Daniel, Meyer Ernst (2019), Majorana fermions in magnetic chains, in PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 107, 1-19.
Mechanical dissipation via image potential states on a topological insulator surface
Yildiz D., Kisiel M., Gysin U., Gurlu O., Meyer E. (2019), Mechanical dissipation via image potential states on a topological insulator surface, in NATURE MATERIALS, 18(11), 1201-1201.
Plasma-assisted catalytic formation of ammonia in N-2-H-2 plasma on a tungsten surface
Ben Yaala Marwa, Saeedi Arsalan, Scherrer Dan-Felix, Moser Lucas, Steiner Roland, Zutter Marco, Oberkofler Martin, De Temmerman Gregory, Marot Laurent, Meyer Ernst (2019), Plasma-assisted catalytic formation of ammonia in N-2-H-2 plasma on a tungsten surface, in PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 21(30), 16623-16633.
A robust AFM-based method for locally measuring the elasticity of samples
Bubendorf Alexandre, Walheim Stefan, Schimmel Thomas, Meyer Ernst (2018), A robust AFM-based method for locally measuring the elasticity of samples, in BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 9, 1-10.
A Two-Dimensional Polymer Synthesized at the Air/Water Interface
Muller Vivian, Hinaut Antoine, Moradi Mina, Baljozovic Milos, Jung Thomas A., Shahgaldian Patrick, Moehwald Helmuth, Hofer Gregor, Kroger Martin, King Benjamin T., Meyer Ernst, Glatzel Thilo, Schluter A. Dieter (2018), A Two-Dimensional Polymer Synthesized at the Air/Water Interface, in ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 57(33), 10584-10588.
Anchoring of a dye precursor on NiO(001) studied by non-contact atomic force microscopy
Freund Sara, Hinaut Antoine, Marinakis Nathalie, Constable Edwin C., Meyer Ernst, Housecroft Catherine E., Glatzel Thilo (2018), Anchoring of a dye precursor on NiO(001) studied by non-contact atomic force microscopy, in BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 9, 242-249.
Diacetylene Linked Anthracene Oligomers Synthesized by One-Shot Homocoupling of Trimethylsilyl on Cu(111)
Kawai Shigeki, Krejci Ondrej, Foster Adam S., Pawlak Remy, Xu Feng, Peng Lifen, Orita Akihiro, Meyer Ernst (2018), Diacetylene Linked Anthracene Oligomers Synthesized by One-Shot Homocoupling of Trimethylsilyl on Cu(111), in ACS NANO, 12(8), 8791-8797.
Electrospray deposition of structurally complex molecules revealed by atomic force microscopy
Hinaut Antoine, Meier Tobias, Pawlak Remy, Feund Sara, Johr Res, Kawai Shigeki, Glatzel Thilo, Decurtins Silvio, Muellen Klaus, Narita Akimitsu, Liu Shi-Xia, Meyer Ernst (2018), Electrospray deposition of structurally complex molecules revealed by atomic force microscopy, in NANOSCALE, 10(3), 1337-1344.
Mechanical dissipation from charge and spin transitions in oxygen-deficient SrTiO3 surfaces
Kisiel Marcin, Brovko Oleg O., Yildiz Dilek, Pawlak Remy, Gysin Urs, Tosatti Erio, Meyer Ernst (2018), Mechanical dissipation from charge and spin transitions in oxygen-deficient SrTiO3 surfaces, in NATURE COMMUNICATIONS, 9, s41467-018.
Multiple heteroatom substitution to graphene nanoribbon
Kawai Shigeki, Nakatsuka Soichiro, Hatakeyama Takuji, Pawlak Remy, Meier Tobias, Tracey John, Meyer Ernst, Foster Adam S. (2018), Multiple heteroatom substitution to graphene nanoribbon, in SCIENCE ADVANCES, 4(4), aar7181.
Nanotribology
Gnecco Enrico, Perkin Susan, Vanossi Andrea, Meyer Ernst (2018), Nanotribology, in BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 9, 2330-2331.
Plasma cleaning of ITER edge Thomson scattering mock-up mirror in the EAST tokamak
Yan Rong, Moser Lucas, Wang Baoguo, Peng Jiao, Vorpahl Christian, Leipold Frank, Reichle Roger, Ding Rui, Chen Junling, Mu Lei, Steiner Roland, Meyer Ernst, Zhao Mingzhong, Wu Jinhua, Marot Laurent (2018), Plasma cleaning of ITER edge Thomson scattering mock-up mirror in the EAST tokamak, in NUCLEAR FUSION, 58(2), aa96b8.
Quartz micro-balance and in situ XPS study of the adsorption and decomposition of ammonia on gold, tungsten, boron, beryllium and stainless steel surfaces
Ben Yaala M., Marot L., Steiner R., Moser L., De Temmerman G., Porosnicu C., Lungu C. P., Oberkofler M., Meyer E. (2018), Quartz micro-balance and in situ XPS study of the adsorption and decomposition of ammonia on gold, tungsten, boron, beryllium and stainless steel surfaces, in NUCLEAR FUSION, 58(10), aad483.
Recent highlights in nanoscale and mesoscale friction
Vanossi Andrea, Dietzel Dirk, Schirmeisen Andre, Meyer Ernst, Pawlak Remy, Glatzel Thilo, Kisiel Marcin, Kawai Shigeki, Manini Nicola (2018), Recent highlights in nanoscale and mesoscale friction, in BEILSTEIN JOURNAL OF NANOTECHNOLOGY, 9, 1995-2014.
Stick-Slip Motion of ssDNA over Graphene
Vilhena J. G., Gnecco Enrico, Pawlak Remy, Moreno-Herrero Fernando, Meyer Ernst, Perez Ruben (2018), Stick-Slip Motion of ssDNA over Graphene, in JOURNAL OF PHYSICAL CHEMISTRY B, 122(2, SI), 840-846.
Structural superlubricity and ultralow friction across the length scales
Hod Oded, Meyer Ernst, Zheng Quanshui, Urbakh Michael (2018), Structural superlubricity and ultralow friction across the length scales, in NATURE, 563(7732), 485-492.
Transoid-to-Cisoid Conformation Changes of Single Molecules on Surfaces Triggered by Metal Coordination
Freund Sara, Pawlak Remy, Moser Lucas, Hinaut Antoine, Steiner Roland, Marinakis Nathalie, Constable Edwin C., Meyer Ernst, Housecroft Catherine E., Glatzel Thilo (2018), Transoid-to-Cisoid Conformation Changes of Single Molecules on Surfaces Triggered by Metal Coordination, in ACS OMEGA, 3(10), 12851-12856.
Valence band behaviour of zirconium oxide, Photoelectron and Auger spectroscopy study
Azdad Zakaria, Marot Laurent, Moser Lucas, Steiner Roland, Meyer Ernst (2018), Valence band behaviour of zirconium oxide, Photoelectron and Auger spectroscopy study, in SCIENTIFIC REPORTS, 8, s41598-018.

Associated projects

Number Title Start Funding scheme
162512 Neue Einsichten in die Sonden-Proben-Wechselwirkung bei den Rastersondenmethoden 01.10.2015 Project funding (Div. I-III)
188445 Neue Einsichten in die Sonden-Proben-Wechselwirkung bei den Rastersondenmethoden 01.10.2019 Project funding (Div. I-III)
170212 Superlubricity from Macro- to Nanoscale: Bridging the gap between macro- and nanotribology 01.01.2017 Bilateral programmes
177021 Low Temperature Scanning Probe Microscopy to detect Majorana fermions and magnetic molecules on topological insulators 01.01.2018 R'EQUIP

Abstract

This research proposal focuses on the progress in the study of local interactions by Scanning Probe Methods (SPM). The research in this field is only possible due to our long-standing experience and equipment:Nanolino: STM/AFM force microscopy in ultrahigh vacuumLT-SPM: Combined low temperature scanning tunneling and force microscopyThe following research topics will be addressed in this period:a) High resolution tunneling and force spectroscopy of Majorana bound statesFrom our recent experience in building atomic chains of iron atoms on superconducting lead, our aim is to expand the investigations of the Majorana bound state (MBS) properties such as the dependence of its wave-function as a function of the chain length. From theory, it is expected that MBS are localized at the chain ends but tend to hybridize for critical chain sizes ( >20 nm), while for longer wires they should have clearly separated states from the continuum. A second strand of research is related to the unexpected force contrast suspected to arise from the bound state. Finally, we will also start manipulation experiments of single-atoms on superconductors to control atom-by-atom built-up of 1D and 2D structures to explore the interplay between the chain structure and the Majorana wave functions or the non-Abelian properties of MBS.b) Opto-Electronic properties at molecular scaleTo electrically decouple the donor-acceptor (DA) molecules experiments will be performed on thin insulating films of NaCl on metal substrates. However, there is first evidence that a particular adsorption site of the molecule allows to form a chelate complex with a single alkali atom pulled out from the decoupling layer leading to a change of the intra-molecular charge distribution. Furthermore, we plan single-molecule manipulations to investigate the influence of the adsorption site. In the second research period, we are going to measure the charge distribution of the DA molecules in dependence of the optical excitation (intensity, wavelength) by bias spectroscopy to investigate the intramolecular charge distribution. An extended strand to be explored are molecular wires, which incorporate a DA complex. These molecular wires will be lifted by the action of the probing tip to further decouple them from the substrate.c) Frictional and Contact Forces - Towards On-Surface ChemistryWe are aiming to use high-resolution AFM to resolve the hydrogen atoms and interactions in configurations of three dimensional hydrocarbons based on propellane derivatives. Though hydrogen bonding is a rather weak interaction, we are optimistic to detect these forces in the topmost located hydrogen atoms. In addition to these experiments, we plan to further extend our studies of frictional forces already explored for the graphene nanoribbons. An advanced polymeric wire is a pyrene chain which has more degrees of freedom. The plan is to pull theses pyrene chains along the Au(111) surface as for the ribbon case. Since the additional flexibility might influence the frictional process, we expect to observe the influence of these rotations in the force contrast. The experiments will be compared to molecular dynamics simulations to further explain the force spectroscopic data.
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