Mayank Sharma

Research project

2D van der Waals magnetic heterostructures

Project supervisor

Prof. Luis Hueso

Recruitment date
01/09/2021

Mayank Sharma

I am Mayank Sharma, and I come from India.

I was raised in a small town ‘Rewari’, which is 100 km south-west of the national capital New Delhi. I did my bachelor’s in Engineering Physics at Delhi Technological University. Soon after that, I moved to south India to pursue my masters in Functional Materials and Nanotechnology at the Indian Institute of Technology (IIT) Madras in Chennai. In July 2020 I was awarded DAAD scholarship to become an exchange student at Technical University Munich (TUM) and to do my master’s thesis at Walther Meissner Institute (WMI), Garching, Germany. For my thesis, I work on “Investigation of the amplitude of the spin Hall Magnetoresistance” in different cubic, magnetically ordered iron oxides. Currently, I am in the writing phase of my thesis here at WMI.

I was fascinated by nanotechnology as this field highlights the interesting phenomena that occur at scales just below the limits of our direct perception. In addition, after working in the field of spintronics I am even more curious to understand how magnetism works at nanoscale. When I was looking for a PhD program, SPEAR came with a perfect opportunity that provides a unique experience of working in different countries and with industrial partners. I believe this experience would help me enrich myself both personally and professionally.

I am really looking forward to meet my teammates and to work with them. Since this would be my first time in Spain, I am excited for the new cultural experience that I am about to have. After all as Aristotle said ‘All men by nature desire to know’.


Project Description

The magnetic response of ultra-thin materials been explored for decades. However, very recently and thanks to the surge of exfoliable magnetic crystals, a new interest has arisen for the investigation of magnetic phenomena in the true 2D limit [1-3].

In this project, the successful candidate will explore vertical 2D heterostructures are a possible way of creating artificial novel magnetic states. Building from the previous experience in the group in graphene-based heterostructures, here we will profit again from the clean interactions that the nominal lack of defects provides, thus avoiding, for instance, pinning sites that obscure the intrinsic response of the materials [4-6].

Diverse materials with ferromagnetic and antiferromagnetic order will be combined. In the first instance, and using magnetic frustration as a base, we will fabricate synthetic antiferromagnetic materials. Subsequently, the candidate will explore magnetic twistronic devices. We will consider the special properties of vdW heterostructures in comparison with conventional covalent or ionic crystals, as this vdW materials provide an opportunity for performing experiments in which the angle between different layers is changed by mechanical rotation.

The research will require the exfoliation and stacking of 2D materials into van der Waals heterostructures, the nanofabrication of devices (thin film deposition, electron beam lithography, etching), and magnetic and magnetotransport measurements (high magnetic fields and low temperatures).

[1] B. Huang et al., Nature 546, 270 (2017)

[2] C. Gong and X. Zhang, Science 363, eaav4450 (2019)

[3] D. R. Klein et al., Science 360, 1218 (2018)

[4] C.K. Safeer et al., Nano Lett. 19, 1074 (2019)

[5] C.K. Safeer et al., Nano Lett. 19, 8758 (2019) [6] C.K. Safeer et al., Nano Lett. 20, 4573 (2020)

Host institution

CIC nanoGUNE

CIC nanoGUNE is a research center devoted to conducting world-class nanoscience research for a competitive growth of the Basque Country. NanoGUNE is a member of the Basque Research and Technology Alliance (BRTA) and is recognized by the Spanish Research Agency as a María de Maeztu Unit of Excellence.

The Nanodevices group, co-led by Prof. Luis E. Hueso and Prof. Fèlix Casanova, is currently composed of 26 members including senior and junior researchers. The group counts with extensive research facilities for fabrication and characterization of devices and several active research lines spanning from nanofabrication to 2D electronics and spin transport.

Planned Secondments

ETHZ (Zürich, Switzerland), under the supervision of Pietro Gambardella.

QZabre (Zürich, Switzerland), under the supervision of Jan Rhensius.

Registering University

Universidad del País Vasco-Euskal Herriko Unibertsitatea (San Sebastián, Spain).

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