التفاصيل البيبلوغرافية
| العنوان: |
Feld-induced modulation of two-dimensional electron gas at LaAlO3/SrTiO3 interface by polar distortion of LaAlO3. |
| المؤلفون: |
Seo, Jinsol, Lee, Hyungwoo, Eom, Kitae, Byun, Jinho, Min, Taewon, Lee, Jaekwang, Lee, Kyoungjun, Eom, Chang-Beom, Oh, Sang Ho |
| المصدر: |
Nature Communications; 6/20/2024, Vol. 15 Issue 1, p1-11, 11p |
| مصطلحات موضوعية: |
TWO-dimensional electron gas, ELECTRON gas, ELECTRON energy loss spectroscopy, ELECTRIC distortion, ELECTRON holography, GAS dynamics |
| مستخلص: |
Since the discovery of two-dimensional electron gas at the LaAlO3/SrTiO3 interface, its intriguing physical properties have garnered significant interests for device applications. Yet, understanding its response to electrical stimuli remains incomplete. Our in-situ transmission electron microscopy analysis of a LaAlO3/SrTiO3 two-dimensional electron gas device under electrical bias reveals key insights. Inline electron holography visualized the field-induced modulation of two-dimensional electron gas at the interface, while electron energy loss spectroscopy showed negligible electromigration of oxygen vacancies. Instead, atom-resolved imaging indicated that electric fields trigger polar distortion in the LaAlO3 layer, affecting two-dimensional electron gas modulation. This study refutes the previously hypothesized role of oxygen vacancies, underscoring the lattice flexibility of LaAlO3 and its varied polar distortions under electric fields as central to two-dimensional electron gas dynamics. These findings open pathways for advanced oxide nanoelectronics, exploiting the interplay of polar and nonpolar distortions in LaAlO3. Understanding two-dimensional electron gas at the LaAlO3/SrTiO3 interface to electrical stimuli remains incomplete. Here, the authors reveal that the lattice flexibility of LaAlO3 and its varied polar distortions under electric fields as central to 2DEG dynamics. [ABSTRACT FROM AUTHOR] |
|
Copyright of Nature Communications is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Find this article in full text from Springer Verlag. 
Full Text Finder