Journal article
Quantum anomalous Hall effect for metrology
- Abstract:
- The quantum anomalous Hall effect (QAHE) in magnetic topological insulators offers great potential to revolutionize quantum electrical metrology by establishing primary resistance standards operating at zero external magnetic field and realizing a universal “quantum electrical metrology toolbox” that can perform quantum resistance, voltage, and current metrology in a single instrument. To realize such promise, significant progress is still required to address materials and metrological challenges—among which, one main challenge is to make the bulk of the topological insulator sufficiently insulating to improve the robustness of resistance quantization. In this Perspective, we present an overview of the QAHE; discuss the aspects of topological material growth and characterization; and present a path toward a QAHE resistance standard realized in magnetically doped (Bi,Sb)2Te3 systems. We also present guidelines and methodologies for QAHE resistance metrology, its main limitations and challenges, as well as modern strategies to overcome them.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
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(Preview, Accepted manuscript, pdf, 2.3MB, Terms of use)
-
- Publisher copy:
- 10.1063/5.0233689
Authors
- Publisher:
- American Institute of Physics
- Journal:
- Applied Physics Letters More from this journal
- Volume:
- 126
- Issue:
- 4
- Article number:
- 040501
- Publication date:
- 2025-01-27
- Acceptance date:
- 2024-12-30
- DOI:
- EISSN:
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1077-3118
- ISSN:
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0003-6951
- Language:
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English
- Pubs id:
-
2080974
- Local pid:
-
pubs:2080974
- Deposit date:
-
2025-01-28
Terms of use
- Copyright holder:
- Huang et al
- Copyright date:
- 2025
- Rights statement:
- © 2025 Author(s). Published under an exclusive license by AIP Publishing.
- Notes:
-
The author accepted manuscript (AAM) of this paper has been made available under the University of Oxford’s Open Access Publications Policy, and a CC BY public copyright licence has been applied.
This is the accepted manuscript version of the article. The final version is available from American Institute of Physics at: 10.1063/5.0233689
- Licence:
- CC Attribution (CC BY)
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