Project

Back to overview

Nanometer-scale Magnetometry

English title Nanometer-scale Magnetometry
Applicant Poggio Martino
Number 159893
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 01.04.2015 - 31.03.2018
Approved amount 426'147.00
Show all

Keywords (7)

nanowires; experimental condensed matter physics; nano-magnetism; SQUIDs; micro- and nanomechanics; nuclear magnetic resonance; magnetic resonance force microscopy

Lay Summary (Italian)

Lead
Lo studio di piccoli magneti e del loro comportamento è un campo affascinante e potenzialmente rilevante per le tecnologie del futuro. Al giorno d'oggi, i ricercatori in questo campo si interessano principalmente ai fenomeni che avvengono soltanto in magneti nanometrici, e non in magneti comuni, cioè macroscopici. Questi studi potrebbero portare a sensori magnetici sempre più sensibili, a memorie magnetiche di altissima densità, oppure addirittura a nuove architetture computazionali.
Lay summary

In questo progetto, proponiamo di usare la nostra competenza nel fare magnetometria su scale nanometriche per due tipi di esperimenti. Nella prima categoria di esperimenti, studieremo la fase skyrmion in strutture nanometriche usando le tecniche di cantilever magnetometry e nanoSQUID magnetometry. Gli skyrmions magnetici sono delle configurazioni a forma di vortice che, in futuro, potrebbero essere efficienti portatori di informazione.

 Nella seconda categoria di esperimenti, useremo le nostre competenze nel fare magnetic resonance force microscopy (MRFM) per misurare segnali di risonanza magnetica nucleare in singoli nanofili di semiconduttore. Con questa tecnica, cercheremo di misurare la forza della interazione magnetica spin-orbit, cosa fin ora impossibile in questi piccolissimi campioni.

I due progetti rappresentano entrambi applicazioni della magnetometria a scale nanometriche per scoprire fenomeni fisici poco conosciuti, cioè fenomeni che fin ora non sono stati rilevati con altre tecniche.

Direct link to Lay Summary Last update: 27.03.2015

Responsible applicant and co-applicants

Employees

Publications

Collaboration

Group / person Country
Types of collaboration
Prof. Song Jin / University of Wisconsin United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Dieter Koelle / U. Tübingen Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Exchange of personnel
Prof. Ernst Meyer / Basel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
Prof. Dirk Grundler / TU München Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Prof. Anna Fontcuberta i Morral / EPFL Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
Spin mechanics-5 and nanoMRI-6 Talk given at a conference Nanomechanics and nanomagnetism 11.02.2018 Chamonix, France Poggio Martino;
Advances in Magnetics (AIM) Talk given at a conference Imaging the magnetic stray field of an artificial chiral spin ice system 04.02.2018 La Thuile, Italy Wyss Marcus;
TRR80 Seminar series at Augsburg University Individual talk Nanomechanics and nanomagnetism 04.12.2017 Augsburg, Germany Poggio Martino;
Foundations and Applications of Nanomechanics Talk given at a conference Mechanical sensing of nanomagnetic systems 25.09.2017 Trieste, Italy Poggio Martino;
13th International Workshop on Magnetism & Superconductivity at the Nanoscale (Coma-ruga 2017) Poster Direct imaging of a vortex state in short CoFeB nanotubes by scanning SQUID 02.07.2017 Coma-ruga, Spain Ceccarelli Lorenzo;
13th International Workshop on Magnetism & Superconductivity at the Nanoscale (Coma-ruga 2017) Talk given at a conference Magnetization configurations and reversal in ferromagnetic nanotubes 02.07.2017 Coma-ruga, Spain Poggio Martino;
CNRS Seminar Individual talk Nanomechanics and Nanomagnetism 29.06.2017 Grenoble, France Poggio Martino;
Univeristy of Ulm Physics Department Colloquium Individual talk Nanomechanics and Nanomagnetism 19.06.2017 Ulm, Germany Poggio Martino;
Trends in Nanoscience 2017 Talk given at a conference Force Sensing with Nanowires 27.03.2017 Irsee, Germany Poggio Martino;
Spin Mechanics 4 Poster Imaging vortex magnetization configurations in ferromagnetic nanotubes by XMCD-PEEM 20.02.2017 Lake Louise, Canada Wyss Marcus;
Spin Mechanics 4 Poster Direct imaging of a vortex state in short CoFeB nanotubes by scanning SQUID 20.02.2017 Lake Louise, Canada Ceccarelli Lorenzo;
Frontiers of Nanomechanical Systems (FNS) 2017 Talk given at a conference Vectorial scanning force microscopy using a nanowire sensor 05.02.2017 La Thuile, Italy Poggio Martino;
German-Japanese Meeting on the Science of Hybrid Quantum Systems Talk given at a conference Nanowire Hybrid Systems and Sensors 10.11.2016 Berlin, Germany Poggio Martino;
Annual Meeting of the Swiss Physical Society (SPS) Talk given at a conference Dynamic Cantilever Magnetometry on Individual Nanomagnets 23.08.2016 Lugano, Switzerland Mehlin Andrea;
8th Joint European Magnetic Symposia Talk given at a conference X-PEEM imaging of global vortex states in ferromagnetic nanotubes 21.08.2016 Glasgow, Great Britain and Northern Ireland Wyss Marcus;
Swiss Nano Convention Poster X-PEEM imaging of global vortex states in ferromagnetic nanotubes 30.06.2016 Basel, Switzerland Wyss Marcus;
Swiss Nano Convention Poster Scanning Probe Microscopy with nano-SQUIDs on tip 30.06.2016 Basel, Switzerland Ceccarelli Lorenzo;
Swiss Nano Convention Talk given at a conference Vectorial Scanning Force Microscopy Using a Nanowire Sensor 30.06.2016 Basel, Switzerland Poggio Martino;
Sol-Skymag 2016 Talk given at a conference The use of dynamical cantilever magnetometry for the detection of the skyrmion phase 26.06.2016 San Sebastian, Spain Mehlin Andrea;
Biomedical Magnetic Resonance Individual talk Nanometer-scale magnetometry 10.12.2015 Zürich, Switzerland Poggio Martino;
Nanowires Workshop Talk given at a conference Nanowires for sensing 26.10.2015 Barcelona, Spain Poggio Martino;
The 8th International School and Conference on Spintronics and Quantum Information Technology (SpinTech VIII) Poster Skyrmion Phase in MnSi Nanowires Detected by Dynamic Cantilever Magnetometry 10.08.2015 Basel, Switzerland Mehlin Andrea;
The 8th International School and Conference on Spintronics and Quantum Information Technology (SpinTech VIII) Poster Three-dimensional magnetic architectures studied with X-PEEM 10.08.2015 Basel, Switzerland Wyss Marcus;
The 8th International School and Conference on Spintronics and Quantum Information Technology (SpinTech VIII) Poster Exchange-bias measured in single permalloy nanotubes using a hybrid nanoscale magnetometer 10.08.2015 Basel, Switzerland Buchter Arne;
The 8th International School and Conference on Spintronics and Quantum Information Technology (SpinTech VIII) Talk given at a conference Measuring nanometer-scale spins systems by ultrasensitive cantilever magnetometry 10.08.2015 Basel, Switzerland Poggio Martino;
5th Nanoscale Magnetic Resonance Imaging (NanoMRI) Conference Talk given at a conference Measuring nanometer-scale spins systems by ultrasensitive cantilever magnetometry 27.07.2015 Waterloo, Canada Poggio Martino;
Spin Mechanics 3 Talk given at a conference Measuring nanometer-scale spin systems by ultrasensitive cantilever magnetometry 22.06.2015 Munich, Germany Poggio Martino;
International Workshop on Magnetic Nanowires and Nanotubes Poster Skyrmion Phase in MnSi Nanowires Detected By Dynamic Cantilever Magnetometry 17.05.2015 Meersburg, Germany Mehlin Andrea;
International Workshop on Magnetic Nanowires and Nanotubes Talk given at a conference Exchange bias measured in single permalloy nanotubes using a hybrid nanoscale magnetometer 17.05.2015 Meersburg, Germany Buchter Arne;


Self-organised

Title Date Place
Basel Nanomagnetism Workshop 19.04.2016 Basel, Switzerland

Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions Talk at Swiss Young Physicists’ Tournament, University of Basel, Switzerland Rhaeto-Romanic Switzerland Italian-speaking Switzerland German-speaking Switzerland Western Switzerland 2018
Talks/events/exhibitions TecDay, Liceo Cantonale di Lugano 1, Lugano, Switzerland Italian-speaking Switzerland 2017
Media relations: print media, online media Eine Kompassnadel für die Nanowelt NZZ Western Switzerland German-speaking Switzerland 2016
Media relations: print media, online media Research News: Editors’ Choice Physics International 2016
Talks/events/exhibitions TecDay, Liceo Cantonale di Lugano 2, Lugano, Switzerland Italian-speaking Switzerland 2015

Associated projects

Number Title Start Funding scheme
140478 Spin, Quantum Electronics, and Nanomechanics 01.04.2012 Project funding (Div. I-III)
178863 New Scanning Probes for Nanomagnetic Imaging 01.04.2018 Project funding (Div. I-III)

Abstract

The study of nanometer-scale magnetism is a vibrant sub-field of condensed matter physics concerned principally with magnetic phenomena in low-dimensional systems -- phenomena that are often not observable in macroscopic systems. Its relevance to a variety of applications including precision sensing, high-density information storage and processing, and sensitive scanning probe techniques make the subject of particular technological interest. In this document, we propose to leverage our laboratory's expertise in nanometer-scale magnetometry in the pursuit of two distinct lines of experimental research. In the first, we aim to use sensitive cantilever and SQUID magnetometry to study the skyrmion phase in nanometer-scale structures. In the second, we intend to use the unique capability of magnetic resonance force microscopy (MRFM) to measure nuclear magnetic resonance (NMR) from nanometer-scale samples to determine the strength of the spin-orbit interaction (SOI) in semiconductor nanowires (NWs). Both projects represent applications of nanometer-scale magnetometry aimed at elucidating poorly-understood physical phenomena, which either have not been -- or cannot be -- measured by other means.Measuring Skyrmions in Nanostructures (Project A): Since their initial observation in 2009, magnetic skyrmions have attracted an intense and broad interest among physicists. These topologically nontrivial spin structures are stable or metastable configurations that arise due to Dzyaloshinskii-Moriya interactions and appear in B20 materials with a helical ground state. Skyrmions are considered promising as carriers of information in high-density magnetic media due to a number of favorable properties, including their nanometer-scale size and the ultra-low electrical current density required to move them. Here we propose to investigate skyrmions in nanometer-scale structures, in which the reduced dimensionality stabilizes the skyrmion phase, significantly extending its range in both temperature and magnetic field. Such a stabilization and the mechanism behind it is particularly important if any practical applications of skyrmions are to be realized.Measuring the Spin-orbit Interaction in Nanowires (Project B): Semiconductor NWs with strong SOI have attracted a great deal of recent interest due to the various topologically non-trivial electronic states that they are predicted to support. These states include helical states and Majorana bound states around topological defects. In order to create and identify such states, measurements of the SOI in the relevant NWs must be made. We aim to make the first of these measurements by realizing a recent proposal by group of Prof. Daniel Loss. Their theory predicts that the nuclear spin relaxation rate in a ballistic NW with Rashba and SOI will show pronounced signatures, which depend on the strength of the SOI. We intend to use our demonstrated ability to do nanometer-scale NMR on semiconductor NWs to measure these signatures.The main applicant, Prof. Martino Poggio, was promoted to tenured associate professor in the Physics Department at the University of Basel in January 2014. After nearly 6 years in Basel, he has an established research group working on nanomechanics, nanomagnetism, and nanoMRI. His group currently consists of 3 post-doctoral researchers and 6 Ph.D. students. He is a winner of a 2013 ERC Starting Grant and has has active collaborations around the world including with Prof. Erik Bakkers (Eindhoven/Delft), Prof. Song Jin (Wisconsin), Prof. Dirk Grundler (TU München), Prof. Dieter Koelle (Tübingen), and Prof. Pietro Carretta (Pavia). Within Switzerland he is part of the Swiss Nanoscience Institute and the NCCR Quantum Science and Technology and has active collaborations with Prof. Anna Fontcuberta i Morral (EPFL) and Prof. Christian Degen (ETHZ). He collaborates with various colleagues in Basel, including Prof. Richard Warburton, Prof. Daniel Loss, and Prof. Stefan Willitsch.
-