Workshop 2025: Quantum anomalous Hall effect materials and devices for metrology (QuAHMET): An European Partnership on Metrology project
Session Information
Location: Lecture room Schay
Day: Friday, 16 May
Time: 09:00 - 09:30
Chairperson: Annika Johansson
Presentation Details
Presentation Type: Oral presentation
Title: Quantum anomalous Hall effect materials and devices for metrology (QuAHMET): An European Partnership on Metrology project
Abstract: The Quantum Hall effect (QHE) is the foundation for the realisation of the primary resistance standard (PRS), representing the “gold standard” in electrical metrology. QHE devices currently require low temperatures and high magnetic fields, impeding their adoption beyond national metrology institutes. The Quantum Anomalous Hall effect (QAHE) provides an opportunity to overcome these limitations while maintaining the unsurpassed accuracy expected of PRS. Greater knowledge of QAHE devices is essential to accelerate the development of a ‘quantum electrical metrology toolbox’ for the universal adoption of quantum electrical SI standards. QuAHMET project will grow, characterise, and evaluate thin films for QAHE and devices fabricated from them, leading to a detailed metrological assessment from sub-K to above 1 K, currents from below 100 nA to above 1 µA and over a wide range of external magnetic fields up to several Tesla.
Quantum anomalous Hall effect materials and devices for metrology (QuAHMET) is a Joint research Project of the European Partnership on Metrology. The project will focus on the traceable measurement and characterisation of quantum anomalous Hall effect (QAHE) materials as devices and primary resistance standard candidates.
The QuAHMET project consortium consists of 14 partners and gathers 7 leading European national metrology institutes (NMIs), a Japanese NMI for metrology, complemented by 6 globally recognized institutes from academia and applied research.
Susmit Kumar1, Jan Kučera2, Martina Marzano3, Luca Callegaro3, Hansjörg Scherer4, Mattias Kruskopf4, Ayşe Gökçe Özbay5, Charles Gould6a,b, Laurens W. Molenkamp6a,b, Mehmet Cengiz Onbaşlı7, Nathaniel Huang8, Olga Kazakova8, Stephen Giblin8, Sayani Majumdar9, Thorsten Hesjedal10, Giuseppe Maruccio11, Nobu Kaneko12, Frédéric Overney13, Johannes Hoffman13, Martino Poggio14
1Justervesenet (JV), Fetveien 99, 2007 Kjeller, Norway
2Cesky Metrologicky Institut (CMI), Brno, Czech Republic
3Istituto Nazionale di Ricerca Metrologica (INRIM), Strada delle Cacce 91, 10135 Torino, Italy
4Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
5Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK), Ankara, Türkiye
6aFaculty for Physics and Astronomy (EP3), Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany. bInstitute for Topological Insulators, Am Hubland, D-97074 Würzburg, Germany
7Koç Üniversitesi, Istanbul, Türkiye
8National Physical Laboratory (NPL), London, United Kingdom
9Tampereen korkeakoulusäätiö sr, Tampere, Finland
10University of Oxford, Oxford, United Kingdom
11Universitá del Salento, Lecce, Italy
12National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
13Eidgenössisches Institut für Metrologie (METAS), Bern, Switzerland
14Univsersitat Basel, Basel, Switzerland
Presenter
Dr Susmit Kumar
Justervesenet | Norway
Authors
1. Kumar Susmit | Justervesenet (JV), Norway
2. Kučera Jan | Cesky Metrologicky Institut (CMI), Brno, Czech Republic
3. Marzano Martina | Istituto Nazionale di Ricerca Metrologica (INRIM), Strada delle Cacce 91, 10135 Torino, Italy
4. Callegaro Luca | Istituto Nazionale di Ricerca Metrologica (INRIM), Strada delle Cacce 91, 10135 Torino, Italy
5. Scherer Hansjörg | Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
6. Kruskopf Mattias | Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
7. Özbay Ayşe Gökçe | Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK), Ankara, Türkiye
8. Bozat Ozgur | Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK), Ankara, Türkiye
9. Gould Charles | Faculty for Physics and Astronomy (EP3), Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany. Institute for Topological Insulators, Am Hubland, D-97074 Würzburg, Germany
10. Fijalkowski Kajetan | Faculty for Physics and Astronomy (EP3), Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany. Institute for Topological Insulators, Am Hubland, D-97074 Würzburg, Germany
11. Molenkamp Laurens W. | Faculty for Physics and Astronomy (EP3), Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany. Institute for Topological Insulators, Am Hubland, D-97074 Würzburg, Germany
12. Onbaşlı Mehmet Cengiz | Koç Üniversitesi, Istanbul, Türkiye
13. Huang Nathaniel | National Physical Laboratory (NPL), London, United Kingdom
14. Kazakova Olga | National Physical Laboratory (NPL), London, United Kingdom
15. Giblin Stephen | National Physical Laboratory (NPL), London, United Kingdom