Opening New Perspectives in Nanotechnology: Symmetry-Forbidden Interfaces, Vector Substrates and Immaculate Nanocrystals

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日期	2024-05-27

時間	12:10-13:10

地點	理學教學新大樓物理系1F 36173會議室

領域	Quantum Information Science

講者	Jochen Mannhart 教授 - Max Planck Institute for Solid State Research, Germany

題目	Opening New Perspectives in Nanotechnology: Symmetry-Forbidden Interfaces, Vector Substrates and Immaculate Nanocrystals

摘要	Recent developments in the epitaxial growth of oxide films enabled the fabrication of ultrathin, freestanding oxide membranes. These membranes have enabled fundamental advances in the fabrication and use of thin-film heterostructures, which overcome well-known requirements of epitaxial growth, namely match of lattice symmetries and lattice parameters between films and substrates. I will present our studies of membrane-based quantum material interfaces and heterostructures which surpass the possibilities of conventional epitaxial growth. These studies open routes to obtain excellent nanocrystals of quantum materials [1], to fabricate novel substrates [2], and to design and utilize heterostructures that previously were forbidden by symmetry constraints [3]. [1] V. Harbola et al., Self‐Assembly of Nanocrystalline Structures from Freestanding Oxide Membranes, Adv. Mat. 35, 2210989 (2023). [2] V. Harbola et al., Vector Substrates: Idea, Design, and Realization, Adv. Funct. Mat., 34, 2306289 (2024). [3] H. Wang et al., Interface Design Beyond Epitaxy: Oxide Heterostructures Comprising Symmetry-forbidden Interfaces, arXiv:2403.08736.

2024-05-27 12:10:00 ~ 2024-05-27 13:10:00