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- Title
Strain driven emergence of topological non-triviality in YPdBi thin films.
- Authors
Bhardwaj, Vishal; Bhattacharya, Anupam; Srivastava, Shivangi; Khovaylo, Vladimir V.; Sannigrahi, Jhuma; Banerjee, Niladri; Mani, Brajesh K.; Chatterjee, Ratnamala
- Abstract
Half-Heusler compounds exhibit a remarkable variety of emergent properties such as heavy-fermion behaviour, unconventional superconductivity and magnetism. Several of these compounds have been predicted to host topologically non-trivial electronic structures. Remarkably, recent theoretical studies have indicated the possibility to induce non-trivial topological surface states in an otherwise trivial half-Heusler system by strain engineering. Here, using magneto-transport measurements and first principles DFT-based simulations, we demonstrate topological surface states on strained [110] oriented thin films of YPdBi grown on (100) MgO. These topological surface states arise in an otherwise trivial semi-metal purely driven by strain. Furthermore, we observe the onset of superconductivity in these strained films highlighting the possibility of engineering a topological superconducting state. Our results demonstrate the critical role played by strain in engineering novel topological states in thin film systems for developing next-generation spintronic devices.
- Subjects
SUPERCONDUCTIVITY; THIN films; MAGNETISM; FERMIONS; SPINTRONICS
- Publication
Scientific Reports, 2021, Vol 11, Issue 1, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-021-86936-2