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Functional active defects in condensed-matter systems

English title Functional active defects in condensed-matter systems
Applicant Fiebig Manfred
Number 149192
Funding scheme Project funding (Div. I-III)
Research institution Departement Materialwissenschaft ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Condensed Matter Physics
Start/End 01.01.2014 - 31.12.2016
Approved amount 350'640.00
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Keywords (6)

Defects; Ferroic; Scanning probe microscopy; Skyrmions; Oxides; Domain walls

Lay Summary (German)

Lead
Defekte in sonst perfekt geordneten Materialien können alles andere sein als nur ungewollte Fehlstellen. Ganz im Gegenteil können sie aufgrund ihrer Beschaffenheit und einer Grösse von oft nur wenigen Nanometern ganz besondere Eigenschaften hervorrufen, die das Material ansonsten nicht aufweist. Grenzflächen zwischen elektrisch geordneten Bereichen in Isolatoren können beispielsweise stark erhöhte Leitfähigkeit entwickeln und damit als Miniaturdrähte in zukünftigen Anwendungen dienen.
Lay summary

Inhalt und Ziel des Forschungsprojekts

Das übergeordnete Ziel unseres Projektes ist es, neuartige Materialdefekte zu identifizieren, zu charakterisieren und ihre spezifische Bedeutung für zukunftsorientiere Technologien aufzuzeigen. Im Detail werden wir (i) magnetische Wirbel (Skyrmionen) und (ii) natürliche elektrische und magnetische Grenzflächen (Domänenwände) in Festkörpern untersuchen. Beide Arten von Defekten haben grösstes Potential als Informationsträger in zukünftigen Speichermedien, jedoch sind ihre physikalischen Eigenschaften bisher weitestgehend unerforscht.

 

Wissenschaftlicher und gesellschaftlicher Kontext

Unsere Arbeit wird neue und wichtige Einblicke in die Physik von Skyrmionen und Domänenwänden hervorbringen sowie Chancen und Grenzen ihrer Nutzbarkeit für nanotechnologische Anwendungen aufweisen. Die Ergebnisse werden sowohl für die Wissenschaft als auch Informationsindustrie von grossem Interesse sein und die weitere Entwicklung in diesem Forschungsfeld massgeblich mitbestimmen.
Direct link to Lay Summary Last update: 29.12.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
Electrostatic potential mapping at ferroelectric domain walls by low-temperature photoemission electron microscopy
SchaabJ., ShapovalovK., SchoenherrP., HacklJ., KhanI., HentschelM., YanZ., BourretE., SchneiderC.M., NemsakS., StengelM., CanoA., MeierD. (2019), Electrostatic potential mapping at ferroelectric domain walls by low-temperature photoemission electron microscopy, in Appl. Phys. Lett., 115 (2019)(122903), 122903.
Observation of Uncompensated Bound Charges at Improper Ferroelectric Domain Walls
Schoenherr Peggy, Shapovalov Konstantin, Schaab Jakob, Yan Zewu, Bourret Edith D., Hentschel Mario, Stengel Massimiliano, Fiebig Manfred, Cano Andrés, Meier Dennis (2019), Observation of Uncompensated Bound Charges at Improper Ferroelectric Domain Walls, in Nano Letters, 19(3), 1659-1664.
Electrical half-wave rectification at ferroelectric domain walls
Schaab Jakob, Skjærvø Sandra H., Krohns Stephan, Dai Xiaoyu, Holtz Megan E., Cano Andrés, Lilienblum Martin, Yan Zewu, Bourret Edith, Muller David A., Fiebig Manfred, Selbach Sverre M., Meier Dennis (2018), Electrical half-wave rectification at ferroelectric domain walls, in Nature Nanotechnology, 13(11), 1028-1034.
Topological domain walls in helimagnets
Schoenherr P., Müller J., Köhler L., Rosch A., Kanazawa N., Tokura Y., Garst M., Meier D. (2018), Topological domain walls in helimagnets, in Nature Physics, 14(5), 465-468.
Electronic bulk and domain wall properties in B-site doped hexagonal ErMnO3
HolstadT.S., EvansD.M., RuffA., SmåbråtenD.R., SchaabJ., TzschaschelCh., YanZ., BourretE., SelbachS.M., KrohnsS., MeierD. (2018), Electronic bulk and domain wall properties in B-site doped hexagonal ErMnO3, in Phys. Rev. B, 97, 085143.
Walls with special functionality
MeierDennis (2017), Walls with special functionality, in Physik Journal, (9), 55-55.
Functional electronic inversion layers at ferroelectric domain walls
Mundy J. A., Schaab J., Kumagai Y., Cano A., Stengel M., Krug I. P., Gottlob D. M., Doğanay H., Holtz M. E., Held R., Yan Z., Bourret E., Schneider C. M., Schlom D. G., Muller D. A., Ramesh R., Spaldin N. A., Meier D. (2017), Functional electronic inversion layers at ferroelectric domain walls, in Nature Materials, 16(6), 622-627.
Conductivity contrast and tunneling charge transport in the vortex-like ferroelectric domain pattern of multiferroic hexagonal YMnO3
Ruff E., Krohns S., Lilienblum M., Meier D., Fiebig M., Lunkenheimer P., Loidl A. (2017), Conductivity contrast and tunneling charge transport in the vortex-like ferroelectric domain pattern of multiferroic hexagonal YMnO3, in Physical Review Letters, 118, 036803.
Functional electronic inversion layers at ferroelectric domain walls
Mundy J., Schaab J., Kumagai Y., Cano A., Stengel M., Krug I. P., Gottlob D. M., Doganay H., Holtz M. E., Held R., Yan Z., Bourret E., Schneider C. M., Schlom D. G., Muller D. A., Ramesh R., Spaldin N. A., Meier D. (2017), Functional electronic inversion layers at ferroelectric domain walls, in Nature Materials, 16, 622-627.
Contact-Free Mapping of Electronic Transport Phenomena of Polar Domains in SrMnO3 Films
Schaab J., Krug I. P., Doganay H., Hackl J., Gottlob D., Khan M. I., Nemsak S., Maurel L., Langenberg E., Algarabel P. A., Pardo J. A., Schneider C. M., Meier D. (2016), Contact-Free Mapping of Electronic Transport Phenomena of Polar Domains in SrMnO3 Films, in Phys. Rev. Appl., 5, 054009.
Local dynamics of topological magnetic defects in the itinerant helimagnet FeGe
Dussaux A., Schoenherr P., Koumpouras K., Chico J., Chang K., Lorenzelli L., Kanazawa N., Tokura Y., Garst M., Bergman A., Degen C. L., Meier D. (2016), Local dynamics of topological magnetic defects in the itinerant helimagnet FeGe, in Nature Communications, 7, 12430.
Optimization of electronic domain-wall properties by aliovalent cation substitution
Schaab J., Cano A., Lilienblum M., Yan Z., Bourret E., Ramesh R., Fiebig M., Meier D. (2016), Optimization of electronic domain-wall properties by aliovalent cation substitution, in Advanced Electronic Materials, 2, 1500195.
Robustness of magnetic and electric domains against charge carrier doping in multiferroic hexagonal ErMnO3
Hassanpour E., Wegmayr V., Schaab J., Yan Z., Bourret E., Lottermoser Th., Fiebig M., Meier D. (2016), Robustness of magnetic and electric domains against charge carrier doping in multiferroic hexagonal ErMnO3, in New Journal of Physics, 18, 43015.
Ferroelectric domains in the multiferroic phase of ErMnO3 imaged by low-temperature
Schaab J., Trassin M., Scholl A., Yan Z., Bourret E., Ramesh R., Meier D. (2015), Ferroelectric domains in the multiferroic phase of ErMnO3 imaged by low-temperature, in Journal of Physics: Conference Series, 592, 012120.
Growth of high-quality hexagonal ErMnO3 single crystals by the pressurized floating-zone method
Yan Z., Meier D., Schaab J., Ramesh R., Samulon E., Bourret E. (2015), Growth of high-quality hexagonal ErMnO3 single crystals by the pressurized floating-zone method, in Journal of Crystal Growth, 409, 75-79.
Polarization control at spin-driven ferroelectric domain walls
Leo N., Bergman A., Cano A., Poudel N., Lorenz B., Fiebig M., Meier D. (2015), Polarization control at spin-driven ferroelectric domain walls, in Nature Communications, 6, 6661.
Strain-induced coupling of electrical polarization and structural defects in SrMnO3 films
Becher C., Maurel L., Aschauer U., Lilienblum M., Magen C., Meier D., Langenberg E., Trassin M., Balsco J., Krug I. P., Algarabel P. A., Spaldin N. A., Pardo J. A., Fiebig M. (2015), Strain-induced coupling of electrical polarization and structural defects in SrMnO3 films, in Nature Nanotechnology, 10, 661-665.

Collaboration

Group / person Country
Types of collaboration
Prof. Ladislav Bohatý, Univ. Cologne Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Prof. Yoshinori Tokura, Univ. Tokyo Japan (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Prof. Maxim Mostovoy, Univ. Groningen Netherlands (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Claus M. Schneider, FZ Jülich, BESSY Berlin Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Prof. Ramamoorthy Ramesh, UC Berkeley United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Exchange of personnel
Prof. Kathrin Dörr, Univ. Halle Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Prof. Tsuyoshi Kimura, Univ. Osaka Japan (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Prof. Christian Pfleiderer, TU Munich Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Dr. Dimitri Argyriou, European Spallation Source AB Sweden (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Dr. Andres Cano, ESRF Grenoble France (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Nicola A. Spaldin, ETH Zurich Switzerland (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
Spring Meeting of the German Physical Society 2019 Talk given at a conference Helimagnets, sand patterns and fingerprints linked by topology 31.03.2019 Regensburg, Germany Schönherr Peggy;
Gordon Research Conference on Multiferroic and Magnetoelectric Materials Talk given at a conference Dynamical Multiferroic Processes 05.08.2018 Lewiston, United States of America Fiebig Manfred;
Edgar Lüscher Seminar 2018 Talk given at a conference Domain Walls in Multiferroics as Functional Oxide Interfaces 03.02.2018 Klosters, Switzerland Fiebig Manfred;
Fall Meeting of the Materials Research Society 2017 Talk given at a conference Domain Dynamics in Multiferroics 26.11.2017 Boston, United States of America Fiebig Manfred;
14th International Meeting on Ferroelectricity Talk given at a conference Domain Dynamics in Multiferroics 04.09.2017 San Antonio, United States of America Fiebig Manfred;
International Conference on Strongly Correlated Electron Systems 2017 Talk given at a conference Domain Dynamics in Multiferroics 17.07.2017 Prag, Czech Republic Fiebig Manfred;
Fall Meeting of the Materials Research Society 2015 Talk given at a conference Domain Walls in Multiferroics as Functional Oxide Interfaces 29.11.2015 Boston, United States of America Fiebig Manfred;
Spring Meeting of the German Physical Society 2015 Talk given at a conference Domain Walls in Multiferroics as Functional Oxide Interfaces 15.03.2015 Berlin, Germany Fiebig Manfred; Schaab Jakob; Schönherr Peggy;
March Meeting of the American Physical Society 2015 Talk given at a conference Domain Walls in Improper Ferroelectrics as Functional Oxide Interfaces 02.03.2015 San Antonio, United States of America Fiebig Manfred;
Epihany Meeting (Dreikönigstreffen) Talk given at a conference Domain Walls in Multiferroics as Functional Oxide Interfaces 07.01.2015 Bad Honnef, Germany Fiebig Manfred;
European Fall Meeting of the Materials Research Society 2014 Talk given at a conference Domain Walls in Multiferroics as Functional Oxide Interfaces 15.09.2014 Warschau, Poland Fiebig Manfred;
Gordon Research Conference on Multiferroic and Magnetoelectric Materials Talk given at a conference Functional Domain Walls in Multiferroics 10.08.2014 Biddeford, United States of America Fiebig Manfred;
Spring Meeting of the Materials Research Society 2014 Talk given at a conference Domain Walls in Multiferroics as Functional Oxide Interfaces 21.04.2014 San Francisco, United States of America Fiebig Manfred;


Self-organised

Title Date Place
Gordon Research Conference on Multiferroic and Magnetoelectric Materials 05.08.2018 Lewiston, United States of America

Knowledge transfer events

Active participation

Title Type of contribution Date Place Persons involved


Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions Treffpunkt Science City -- "Das perfekte Material" German-speaking Switzerland 2019

Awards

Title Year
I. K. Lykke award for young researchers, Norwegian Academy of Science and Letters, Norway 2019
Young Researcher Award, Royal Norwegian Society, Norway 2019
Gustav Hertz Prize of the German Physical Society for Dr. Dennis Meier for his research on domain walls in multiferroics. 2016

Associated projects

Number Title Start Funding scheme
150635 Functional active defects in condensed matter systems 01.12.2013 R'EQUIP

Abstract

Modern electronics devices greatly benefit from the fascinating physics that occur when tailored defects are introduced into an otherwise perfectly ordered crystal structure. This is strikingly reflected by p- and n-type semiconductors that basically owe all their special properties to charge transfer from implanted defects known as acceptor and donor atoms, respectively. Another type of engineered defect with functional qualities are hetero-interfaces at which two different materials meet with atomic precision. At the LaAlO3/SrTiO3 interface, for instance, unique electric transport properties arise that drastically differ from those of the surrounding bulk material. A major drawback of the aforementioned type of chemical impurity or artificial interface is that they are passive defects: once implemented into a material it is difficult or even impossible to move or otherwise manipulate them later on. In a very recent development attempts are made to overcome this fundamental limitation and identify systems with active defects, i.e., defects of a type that can be readily manipulated post-growth. This may, for example, be a domain wall which, due to the confinement and discontinuity at the wall, can have transport or magnetic properties that are very different from those of the bulk: In contrast to the immobile interface separating constituents in a heterostructure a domain wall can be created, annihilated, or moved at any time by an appropriate external force field.In our project we will focus on the investigation of two types of active defects of great current interest: (i) domain walls in multiferroics with improper ferroelectricity; (ii) topological magnetic vortices of spins, called skyrmions, in half-metals and insulators. These two types of defects are of the two- and one-dimensional type, respectively, and outstanding because of an intriguing interplay of magnetic and electric degrees of freedom inherent to them. The extraordinary potential of domain walls and skyrmions as active low-dimensional building blocks for nano-electronics has been realized so very recently that their understanding is still at a fragmentary level and their occurrence limited to cryogenic temperatures. We will now apply a unique combination of state-of-the-art low-temperature scanning probe microscopy (SPM) techniques for gaining a comprehensive picture of magnetic and electric defect properties at the level of the inherent length scale (~20 nm) of these low-dimensional objects. We will thus achieve a fundamental understanding of the complex correlation physics associated to multiferroic domain walls and skyrmions as well as their manipulation as "active defects". Note that this submission is the first part of a tandem proposal: The SPM laboratory constituting the experimental center of our project will be applied for via the R'Equip program (deadline 15 May 2013) while the present project proposal covers funding for the remaining equipment, consumables, personnel, and traveling. Both parts are submitted under the same title.
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