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http://hdl.handle.net/2080/3945
Title: | Linear and Cubic Rashba in KTaO3/LaAlO3 (0 0 1) Heterostructure |
Authors: | Bhattacharya, Sanchari Datta, Sanjoy |
Keywords: | KTaO3 LaAlO3 Cubic Rashba Linear Heterostructure |
Issue Date: | Jan-2023 |
Citation: | 21th International Workshop on Computational Physics and Materials Science: Total Energy and Force Methods, ICTP, Trieste, Italy, 11-13 January 2023 |
Abstract: | The LaAlO3/KTaO3 system serves as a prototype to study the electronic properties that emerge as a result of spin-orbit coupling. In this article, we have used first-principles calculations to systematically study two types of defect-free (0 0 1) interfaces, which are termed as n-type and p-type. While the n-type heterostructure produces a two dimensional electron gas, the p-type heterostructure hosts an oxygen-rich two dimensional hole gas at the interface. Furthermore, in the presence of intrinsic spin-orbit coupling, we have found evidence of both cubic and linear Rashba interactions in the conduction bands of the n-type heterostructure. On the contrary, there is spin-splitting of both the valence and the conduction bands in the p-type interface, which are found to be only linear Rashba type. Interestingly, the p-type interface also harbours a potential photocurrent transition path, making it an excellent platform to study the circularly polarized photogalvanic effect. |
Description: | Copyright belongs to proceeding publisher |
URI: | http://hdl.handle.net/2080/3945 |
Appears in Collections: | Conference Papers |
Files in This Item:
File | Description | Size | Format | |
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2023_ICTP_SBhattachrya_Linear.pdf | Poster | 9.66 MB | Adobe PDF | View/Open |
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