Spintronics with novel two-dimensional materials

Ahmet Avsar

The National University of Singapore

Exploitation of the intrinsic spin of an electron, spintronics, could facilitate the development of multifunctional and novel devices. As regards to material selection, two-dimensional (2D) crystals and their van der Waals heterostructures could enable new spintronics functionalities that are inaccessible in conventional bulk materials [1]. To exploit the full potential of such heterostructures, the family of 2D spin transport and magnetic materials needs to be expanded.

In this talk, I will present our efforts in exploring novel materials for this emerging field. Firstly, I will introduce ultra-thin, semiconducting black phosphorus as a promising spin transport channel material and discuss our recent efforts focused on investigating the impact of its unique crystal structure on spin dynamics [2]. Then, I will demonstrate inducing magnetism into an otherwise non-magnetic 2D material with the creation of some specific types of defects [3]. Finally, I will provide an outlook about the potential of heterostructures based on such novel 2D materials for fundamental spintronics research and applications in information storage and logic devices.

[1] A. Avsar et al., Rev. Mod. Phys. 92, 021003 (2020).
[2] A. Avsar et al., Nat. Phys. 13, 888-894 (2017) & L. Cording et al., submitted.
[3] A. Avsar et al., Nat. Nano., 14, 674-678 (2019) & A. Avsar et al., Nat. Comm., 11, 4806 (2020).

Konuşmacı hakkında

Dr Ahmet Avsar is an Assistant Professor and NRF Fellow in the Department of Material Science and Engineering at the National University of Singapore (NUS). Prior to joining NUS, he was an Assistant Professor of Physics at Newcastle University (United Kingdom), and worked as an EPFL Fellow (co-funded by the European Marie Curie COFUND programme) at the Swiss Federal Institute of Technology Lausanne (EPFL, Switzerland) between 2016 and 2020 after completing his PhD in Physics at NUS.
As an experimental condensed matter physicist specialized in two-dimensional (2D) materials, Ahmet Avsar is interested in exploitation of the multiple quantum degrees of freedom (spin, pseudospin and valley) available to 2D materials in the ultimate atomically thin limit for applications in energy-efficient information technologies (For more information: https://sites.google.com/site/aavsar).

Topic: UNAM Nanocolloquium Series
Time: Oct 14, 2022 04:00 PM

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UNAM Conference Hall,

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