Pseudo-proper two-dimensional electron gas formation Article Swipe
Daniel Bennett
,
Pablo Aguado‐Puente
,
Emilio Artacho
,
Nicholas C. Bristowe
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1088/1367-2630/ad8180
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.1088/1367-2630/ad8180
In spite of the interest in the two-dimensional electron gases (2DEGs) experimentally found at surfaces and interfaces, important uncertainties remain about the observed insulator–metal transitions (IMTs). Here we show how an explicit pseudo-proper coupling of carrier sources with a relevant soft mode significantly affects the transition. The analysis presented here for 2DEGs at polar interfaces is based on group theory, Landau-Ginzburg theory, and illustrated with first-principles calculations for the prototypical case of the LaAlO3⁄SrTiO3 interface, for which such a structural transition has recently been observed. This direct coupling implies that the appearance of the soft mode is always accompanied by carriers. For sufficiently strong coupling an avalanchelike first-order IMT is predicted.
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Metadata
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All OpenAlex metadata
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https://doi.org/10.1088/1367-2630/ad8180Digital Object Identifier
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Pseudo-proper two-dimensional electron gas formationWork title
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articleOpenAlex work type
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enPrimary language
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2024Year of publication
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2024-09-30Full publication date if available
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Daniel Bennett, Pablo Aguado‐Puente, Emilio Artacho, Nicholas C. BristoweList of authors in order
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https://doi.org/10.1088/1367-2630/ad8180Publisher landing page
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://doi.org/10.1088/1367-2630/ad8180Direct OA link when available
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Physics, Electron, Fermi gas, Atomic physics, Nuclear physicsTop concepts (fields/topics) attached by OpenAlex
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0Total citation count in OpenAlex
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10Other works algorithmically related by OpenAlex
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