Orientation-dependent electronic structure in interfacial superconductors LaAlO3/KTaO3 (2024)
by Academia Educational
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Cwuka 
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Orientation-dependent electronic structure in interfacial superconductors LaAlO3/KTaO3
by Xiaoyang Chen, Tianlun Yu, Yuan Liu, Yanqiu Sun, Minyinan Lei, Nan Guo, Yu Fan, Xingtian Sun, Meng Zhang, Fatima Alarab, Vladimir N. Strocov, Yilin Wang, Tao Zhou, Xinyi Liu, Fanjin Lu, Weitao Liu, Yanwu Xie, Rui Peng, Haichao Xu & Donglai Feng
Emergent superconductivity at the LaAlO3/KTaO3 interfaces exhibits a mysterious dependence on the KTaO3 crystallographic orientations. Here by soft X-ray angle-resolved photoemission spectroscopy, we directly resolve the electronic structure of the LaAlO3/KTaO3 interfacial superconductors and the non-superconducting counterpart. We find that the mobile electrons that contribute to the interfacial superconductivity show strong kt dispersion. Comparing the superconducting and non-superconducting interfaces, the quasi-three-dimensional electron gas with over 5.5 nm spatial distribution ubiquitously exists and shows similar orbital occupations.🏁
Submitted by Cwuka - 07/12/2026
Academia Educational 7.51 Ranked
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Orientation-dependent electronic structure in interfacial superconductors LaAlO3/KTaO3
by Xiaoyang Chen, Tianlun Yu, Yuan Liu, Yanqiu Sun, Minyinan Lei, Nan Guo, Yu Fan, Xingtian Sun, Meng Zhang, Fatima Alarab, Vladimir N. Strocov, Yilin Wang, Tao Zhou, Xinyi Liu, Fanjin Lu, Weitao Liu, Yanwu Xie, Rui Peng, Haichao Xu & Donglai Feng
Emergent superconductivity at the LaAlO3/KTaO3 interfaces exhibits a mysterious dependence on the KTaO3 crystallographic orientations. Here by soft X-ray angle-resolved photoemission spectroscopy, we directly resolve the electronic structure of the LaAlO3/KTaO3 interfacial superconductors and the non-superconducting counterpart. We find that the mobile electrons that contribute to the interfacial superconductivity show strong kt dispersion. Comparing the superconducting and non-superconducting interfaces, the quasi-three-dimensional electron gas with over 5.5 nm spatial distribution ubiquitously exists and shows similar orbital occupations.🏁
Submitted by Cwuka - 07/12/2026
Academia Educational 7.51 Ranked