s41598-021-86936-2.pdf (4.8 MB)

Strain driven emergence of topological non-triviality in YPdBi thin films

Download (4.8 MB)
journal contribution
posted on 26.04.2021, 10:13 by Vishal Bhardwaj, Anupam Bhattacharya, Shivangi Srivastava, Vladimir V. Khovaylo, Jhuma Sannigrahi, Niladri Banerjee, Brajesh K. Mani, Ratnamala Chatterjee
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.

Funding

MHRD India

SPARC proposal #754

Spin-Orbit Coupling-Driven Superconducting Spintronics

Engineering and Physical Sciences Research Council

Find out more...

History

School

  • Science

Department

  • Physics

Published in

Scientific Reports

Volume

11

Issue

1

Publisher

Springer Nature

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This is an Open Access Article. It is published by Springer Nature under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Full details of this licence are available at: https://creativecommons.org/licenses/by/4.0/

Acceptance date

22/03/2021

Publication date

2021-04-06

Copyright date

2021

ISSN

2045-2322

eISSN

2045-2322

Language

en

Depositor

Dr Niladri Banerjee. Deposit date: 24 April 2021

Article number

7535

Usage metrics

Loughborough Publications

Categories

Licence

Exports