Project

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Scanning probe microscopy and spectroscopy of nanoscale materials and devices

English title Scanning probe microscopy and spectroscopy of nanoscale materials and devices
Applicant Renner Christoph
Number 133777
Funding scheme R'EQUIP
Research institution Département de Physique de la Matière Condensée Université de Genève
Institution of higher education University of Geneva - GE
Main discipline Condensed Matter Physics
Start/End 01.01.2011 - 30.09.2014
Approved amount 330'000.00
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Keywords (11)

Scanning tunneling microscopy; Tunneling spectroscopy; Atomic force microscopy; Spin polarized STM/AFM; Correlated electron systems; Metal-insulator phase transition; Ordered electronic phases; Low dimensional physics; Superconductivity; Scanning probe microscopy (SPM); Spin polarized STM

Lay Summary (English)

Lead
Lay summary
The scanning tunneling microscope (STM) has become increasingly versatile with steadily improving performances to establish itself as a prime technique to examine electronic materials. Most remarkable progresses include spin sensitivity, momentum resolved tunneling spectroscopy and atom tracking temperature dependent measurements. These are all essential features to explore the magnetic field and temperature dependent phase diagrams of novel electronic compounds. One outstanding challenge is to explore materials in close proximity to insulating phases, both in real space and in phase space. Safely driving an STM tip over any surface, independent of its metallic or insulating nature, can be achieved by combining STM with an atomic force microscope (AFM). This project shall address the delicate challenge of combining a fully functional STM with an AFM without undermining its tunneling spectroscopy capabilities.Our scientific objectives are multiple: i) study nanocrystals and devices embedded in insulating matrices, for example gated crystals and nanostructures, and edge states; ii) study correlated electron materials over their entire phase diagram, especially regions next to insulating phases. The latter is of fundamental interest to understand how correlated electron states form unconventional metals and superconductors out of insulating phases by doping or changing temperature, one of the most debated scientific issues in contemporary solid state physics.
Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Publications

Publication
Scanning tunneling microscopy of the charge density wave in 1T−TiSe2 in the presence of single atom defects
Novello A. M., Hildebrand B., Scarfato A., Didiot C., Monney G., Ubaldini A., Berger H., Bowler D. R., Aebi P., Renner Ch. (2015), Scanning tunneling microscopy of the charge density wave in 1T−TiSe2 in the presence of single atom defects, in Physical Review B, 92(8), 081101-1-081101-4.
Doping Nature of Native Defects in 1T−TiSe2
Hildebrand B., Didiot C., Novello A. M., Monney G., Scarfato A., Ubaldini A., Berger H., Bowler D. R., Renner C., Aebi P. (2014), Doping Nature of Native Defects in 1T−TiSe2, in Physical Review Letters, 112(19), 197001-197001-5.
High-Resolution Scanning Tunneling Microscopy Characterization of Mixed Monolayer Protected Gold Nanoparticles
Ong Quy Khac, Reguera Javier, Silva Paulo Jacob, Moglianetti Mauro, Harkness Kellen, Longobardi Maria, Mali Kunal S., Renner Christoph, De Feyter Steven, Stellacci Francesco (2013), High-Resolution Scanning Tunneling Microscopy Characterization of Mixed Monolayer Protected Gold Nanoparticles, in ACS Nano, 7(10), 8529-8539.
Quantitative Analysis of Scanning Tunneling Microscopy Images of Mixed-Ligand-Functionalized Nanoparticles
Biscarini Fabio, Ong Quy Khac, Albonetti Cristiano, Liscio Fabiola, Longobardi Maria, Mali Kunal S., Ciesielski Artur, Reguera Javier, Renner Christoph, De Feyter Steven, Samorì Paolo, Stellacci Francesco (2013), Quantitative Analysis of Scanning Tunneling Microscopy Images of Mixed-Ligand-Functionalized Nanoparticles, in Langmuir, 29(45), 13723-13734.

Collaboration

Group / person Country
Types of collaboration
PSI Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
UCL / LCN Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
SPECS Germany (Europe)
- Industry/business/other use-inspired collaboration

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Colloquium Max Planck Institute Stuttgart Individual talk Scannning probe study of charge order and superconductivity in high temperature superconductors 27.01.2016 Stuttgart, Germany Renner Christoph;
Séminaire Université de Grenoble Individual talk Ordre de charge et supraconductivité vus par microscopie et spectroscopie tunnel 27.11.2015 Grenoble, France Renner Christoph;
STM on unconventional superconductors, NLSC Talk given at a conference Nematic and stripe charge order in high temperature and “conventional” superconductors 25.10.2014 Beijing, China Renner Christoph;
Superstripes 2014 Talk given at a conference Chiral and stripe charge order in 1T-CuxTiSe2 26.07.2014 Erice, Italy Renner Christoph;
Heinrich Rohrer symposium Talk given at a conference Peeking at high temperature superconductors with a tip 31.10.2013 Zurich, Switzerland Renner Christoph;
Superstripes 2013 Talk given at a conference Charge stripes in low dimensional low-Tc superconductors. 27.05.2013 Ischia, Italy Renner Christoph;


Knowledge transfer events

Active participation

Title Type of contribution Date Place Persons involved
Les propriétés de la matière au temps des nanotechnologie Talk 08.05.2012 Corsier, Switzerland Renner Christoph;


Associated projects

Number Title Start Funding scheme
129989 Propriétés électroniques de couches minces d'oxydes ferroélectriques, ferromagnétiques et multiferroiques et hétérostructures 01.04.2010 Project funding (Div. I-III)
182652 Electron matter in correlated electron systems 01.11.2018 Project funding (Div. I-III)
121569 Quantum transport through graphene nanostructures 01.02.2009 Project funding (Div. I-III)
147607 Electronic properties of new atomically thin semiconductors 01.01.2014 Sinergia
162517 Electron matter in unconventional layered superconductors 01.11.2015 Project funding (Div. I-III)
119978 Local electronic and magnetic properties of metal atomic chains 01.09.2008 Project funding (Div. I-III)
130534 Propriétés électroniques de systèmes à basses dimensions 01.04.2010 Project funding (Div. I-III)
144139 Ordered electronic phases in low dimensional superconductors 01.11.2012 Project funding (Div. I-III)

Abstract

Characterizing and understanding the next generation of electronic materials require increasingly sophisticated experimental techniques. Exploiting these materials in innovative 21st century applications relies on a profound knowledge of their properties, in particular electronic and magnetic. The scanning tunneling microscope (STM) is distinctively suited to yield such insight. Not only does STM provide atomic resolution images of surfaces, it can simultaneously measure their electronic and magnetic structures with equally fine spatial resolution. STM has become increasingly versatile with steadily improving performances to establish itself as a prime technique to examine electronic materials. Most remarkable progresses include spin sensitivity, momentum resolved tunneling spectroscopy and atom tracking temperature dependent measurements. These are all essential features to explore the magnetic field and temperature dependent phase diagrams of novel electronic compounds.One outstanding challenge is to explore electronic materials by STM in close proximity to insulating phases, both in real space and in phase space. The scientific objectives are multiple: i) study nanocrystals and devices embedded in insulating matrices, for example gated crystals and nanostructures, edge states, one dimensional systems, etc; ii) study regions in the phase diagram of correlated electron materials next to insulating phases. The latter is of fundamental importance to understand how correlated electron states form unconventional metals and superconductors out of insulating phases by doping or changing temperature, one of the most debated scientific issues in contemporary solid state physics. Safely driving an STM tip over any surface, independent of its metallic or insulating nature, can be achieved by combining STM with an atomic force microscope (AFM). Combining a fully functional STM with an AFM is delicate, especially not to undermine tunneling spectroscopy. The commercial instrument we are planning to procure is capable of regulating the tip position based on force feedback, in a broad magnetic field and temperature range, while maintaining the tip-to-sample separation stable enough to perform tunneling spectroscopy. Furthermore, it has unique characteristics to perform atomic scale spin sensitive STM and AFM. The outcome of the proposed new instrument will not only be of scientific significance, it will also contribute to the training of students and postdocs in a very modern and sophisticated experimental technique.
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