A Field Guide to Non‐Onsager Quantum Oscillations in Metals
Abstract Quantum oscillation (QO) measurements constitute a powerful method to measure the Fermi surface (FS) properties of metals. The observation of QOs is usually taken as strong evidence for the existence of extremal cross‐sectional areas of the FS according to the famous Onsager relation. Here,...
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Wiley-VCH
2025-04-01
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| Series: | Advanced Physics Research |
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| Online Access: | https://doi.org/10.1002/apxr.202400134 |
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| author | Valentin Leeb Nico Huber Christian Pfleiderer Johannes Knolle Marc A. Wilde |
| author_facet | Valentin Leeb Nico Huber Christian Pfleiderer Johannes Knolle Marc A. Wilde |
| author_sort | Valentin Leeb |
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| description | Abstract Quantum oscillation (QO) measurements constitute a powerful method to measure the Fermi surface (FS) properties of metals. The observation of QOs is usually taken as strong evidence for the existence of extremal cross‐sectional areas of the FS according to the famous Onsager relation. Here, mechanisms that generate QO frequencies that defy the Onsager relation are reviewed and material candidates are discussed. These include magnetic breakdown, magnetic interaction, chemical potential oscillations, and Stark quantum interference, most of which lead to signals occurring at combinations of “parent” Onsager frequencies. A special emphasis is put on the recently discovered mechanism of quasi‐particle lifetime oscillations (QPLOs). This work aims to provide a field guide that allows, on the one hand, to distinguish such non‐Onsager QOs from conventional QOs arising from extremal cross sections and, on the other hand, to distinguish the various non‐Onsager mechanisms from each other. A practical classification of non‐Onsager QOs is given in terms of the prerequisites for their occurrence and their characteristics. It is shown that, in particular, the recently discovered QPLOs may pose significant challenges for the interpretation of QO spectra, as they may occur quite generically as frequency differences in multi‐orbit systems, without the necessity of visible “parent” frequencies in the spectrum, owing to a strongly suppressed temperature dephasing of QPLOs. An extensive list of material candidates is presented where QPLOs may represent an alternative explanation for the observation of unexpected QO frequencies. |
| format | Article |
| id | doaj-art-f28727fa0e644ac78df3c2ff45f068d5 |
| institution | DOAJ |
| issn | 2751-1200 |
| language | English |
| publishDate | 2025-04-01 |
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| spelling | doaj-art-f28727fa0e644ac78df3c2ff45f068d52025-08-20T03:09:09ZengWiley-VCHAdvanced Physics Research2751-12002025-04-0144n/an/a10.1002/apxr.202400134A Field Guide to Non‐Onsager Quantum Oscillations in MetalsValentin Leeb0Nico Huber1Christian Pfleiderer2Johannes Knolle3Marc A. Wilde4Technical University of Munich, TUM School of Natural Sciences, Physics Department 85748 Garching GermanyTechnical University of Munich, TUM School of Natural Sciences, Physics Department 85748 Garching GermanyTechnical University of Munich, TUM School of Natural Sciences, Physics Department 85748 Garching GermanyTechnical University of Munich, TUM School of Natural Sciences, Physics Department 85748 Garching GermanyTechnical University of Munich, TUM School of Natural Sciences, Physics Department 85748 Garching GermanyAbstract Quantum oscillation (QO) measurements constitute a powerful method to measure the Fermi surface (FS) properties of metals. The observation of QOs is usually taken as strong evidence for the existence of extremal cross‐sectional areas of the FS according to the famous Onsager relation. Here, mechanisms that generate QO frequencies that defy the Onsager relation are reviewed and material candidates are discussed. These include magnetic breakdown, magnetic interaction, chemical potential oscillations, and Stark quantum interference, most of which lead to signals occurring at combinations of “parent” Onsager frequencies. A special emphasis is put on the recently discovered mechanism of quasi‐particle lifetime oscillations (QPLOs). This work aims to provide a field guide that allows, on the one hand, to distinguish such non‐Onsager QOs from conventional QOs arising from extremal cross sections and, on the other hand, to distinguish the various non‐Onsager mechanisms from each other. A practical classification of non‐Onsager QOs is given in terms of the prerequisites for their occurrence and their characteristics. It is shown that, in particular, the recently discovered QPLOs may pose significant challenges for the interpretation of QO spectra, as they may occur quite generically as frequency differences in multi‐orbit systems, without the necessity of visible “parent” frequencies in the spectrum, owing to a strongly suppressed temperature dephasing of QPLOs. An extensive list of material candidates is presented where QPLOs may represent an alternative explanation for the observation of unexpected QO frequencies.https://doi.org/10.1002/apxr.202400134experimental methodFermi surfacemulti band metalsnon‐onsager quantum oscillationsquantum oscillationsShubnikov–de Haas effect |
| spellingShingle | Valentin Leeb Nico Huber Christian Pfleiderer Johannes Knolle Marc A. Wilde A Field Guide to Non‐Onsager Quantum Oscillations in Metals Advanced Physics Research experimental method Fermi surface multi band metals non‐onsager quantum oscillations quantum oscillations Shubnikov–de Haas effect |
| title | A Field Guide to Non‐Onsager Quantum Oscillations in Metals |
| title_full | A Field Guide to Non‐Onsager Quantum Oscillations in Metals |
| title_fullStr | A Field Guide to Non‐Onsager Quantum Oscillations in Metals |
| title_full_unstemmed | A Field Guide to Non‐Onsager Quantum Oscillations in Metals |
| title_short | A Field Guide to Non‐Onsager Quantum Oscillations in Metals |
| title_sort | field guide to non onsager quantum oscillations in metals |
| topic | experimental method Fermi surface multi band metals non‐onsager quantum oscillations quantum oscillations Shubnikov–de Haas effect |
| url | https://doi.org/10.1002/apxr.202400134 |
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