| Zugriffsnummer | 52368 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | QuAHMET: Quantum anomalous Hall effect materials and devices for metrology |
| Autor(in); Institution |
Callegaro, Luca; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Marzano, Martina; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY
Medved, Juan Ignacio; Istituto Nazionale di Ricerca Metrologica (INRIM), Torino, ITALY; Politecnico di Torino, Torino, ITALY
Gould, Charles; Faculty for Physics and Astronomy (EP3), Universität Würzburg, Würzburg, GERMANY; Institute for Topological Insulators, Würzburg, GERMANY
Hoffmann, Johannes; Eidgenössisches Institut für Metrologie (METAS), Bern, SWITZERLAND
Huang, Nathaniel; National Physical Laboratory (NPL), London, UK
Kučera, Jan; Cesky Metrologicky Institut (CMI), Brno, CZECH REPUBLIC
Molenkamp, Laurens W.; Universität Würzburg, Physikalisches Institut (EP3), Würzburg, GERMANY; Institute for Topological Insulators, Würzburg, GERMANY
Onbasli, Mehmet Cengiz; Koç Üniversitesi, Istanbul, TÜRKIYE
Özbay, A. Gökçe; Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK), Ankara, TÜRKIYE
Kumar, Susmit; Justervesenet (JV), Kjeller, NORWAY
|
| Quelle/Jahr | Proceedings of the XXIV IMEKO World Congress. Measurement: Sensors: 38 (2025), Suppl., e1 - e4 |
| Artikelnummer | 101437 |
| Availability | [online only] |
| ISSN | 2665-9174 (online) |
| DOI | |
| Verlag | Amsterdam: Elsevier |
| Konferenzangaben | IMEKO World Congress 2024, Hamburg, 26-29, August, 2024, Germany |
| Zusammenfassung | The primary resistance standard (PRS) represents the "gold standard" in electrical metrology, whose realization is based on the quantum Hall effect (QHE). The QHE devices currently employed in metrology require extreme experimental conditions to operate, such as low temperatures and high magnetic fields, which restrict their adoption to only National Metrology Institutes (NMIs). The Quantum anomalous Hall effect (QAHE) offers the possibility to overcome these limitations maintaining the ultimate accuracy required to a PRS. QuAHMET: Quantum Anomalous Hall Effect Materials and Devices for Metrology is a Joint Research Project, Fundamental call, of the European Partnership on Metrology (EPM) research funding programme. In this project, we will investigate and implement technologies for developing QAHE devices and measurement infrastructures optimized for metrological applications, towards the development of a ‘quantum electrical metrology toolbox’ for universal adoption of quantum electrical SI standards. The project consortium involves NMIs and academic institutions from Europe and Asia, counting fourteen partners from nine different countries. It is funded with an EU contribution of about 1.3 M€ and will run from 2024 to 2027. QuAHMET is mainly focused on the traceable measurement and characterisation of QAHE materials as devices and PRS candidates. The specific objectives are: 1. The improvement of the growth of magnetically doped topological insulator (TI), (e.g., Bi2Te3 and Sb2Te3) thin film samples by molecular beam epitaxy, exploring the effects of anisotropic magnetic insulator layers interfaced with TIs, and producing high structural quality materials with properties optimised for the QAHE. 2. The investigation of the electronic, structural, magnetic, and magneto-electronic properties of the above samples, and of the limitations of QAHE, i.e., low critical temperatures and currents when working on precision growth-control of interfaces. 3. The employment of scanning probes and magnetometry techniques at low temperatures on the fabricated samples and to characterise the magnetic and structural properties with high lateral resolution. 4. The development and carry out of a detailed metrological assessment of the optimised QAHE devices, both at sub-Kelvin and above 1 K temperatures, aiming at QAHE resistance quantisation accuracy between 1 and 10 ppm, above 1 K, at currents above 1 μA and at low-to-zero applied magnetic field.5. The facilitation of the take up of the technology and measurement infrastructure developed in the project by standards developing organisations (BIPM), end users interested in applications, such as spintronics and topological quantum computing and advance the research and progress in the field of TIs. The presentation will focus on the infrastructure under development and the most recent results obtained by the consortium. The project aims to connect with and impact on National Metrology Institutes and calibration centers, academia, and T&M industry. A stakeholder committee for proper advice and steering during the project life is being set up. The project implements open science practices and FAIR principles and will distribute a periodic newsletter. A website, social media groups and channels, and newsletters are under construction and will be running by the time of the presentation. |
| Kostenfreier Zugang | Open Access Gold |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
| Forschungsprojekt | 23FUN07: QuAHMET: Quantum anomalous Hall effect materials and devices for metrology |
| Förderinformationen (1) |
Förderername: European Commission (EC)
Förderer ID: 0000 0001 2242 8989 Förderer ID Typ: ISNI Förderprogramm: Metrology Partnership 2023 Fundamental Titel der Förderung: 23FUN07: QuAHMET: Quantum anomalous Hall effect materials and devices for metrology Förderungsnummer: 23FUN07 |
Zitierung
Callegaro, L., Marzano, M., Medved, J. I., Gould, C., Hoffmann, J., Huang, N., Kučera, J., Molenkamp, L. W., Onbasli, M. C., Özbay, A. G., Scherer, H., & Kumar, S. (2025). QuAHMET: Quantum anomalous Hall effect materials and devices for metrology. Measurement: Sensors, 38(Suppl.), e1–e4. https://doi.org/10.1016/j.measen.2024.101437