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Light-enabled transport phenomena in van der Waals heterostructures

Project description

Probing the exotic many-body physics of stacked 2D materials

Combining 2D crystals, such as graphene and transition metal dichalcogenides, in one vertical stack has generated tremendous excitement in physics over the last decade. Held together by the same weak Van der Waals forces that hold together layered materials, such heterostructures offer a greater number of new combinations than any traditional growth method. Embedding these systems in optical cavities leads to new hybrid excitations, known as exciton-polaritons, which govern the light–matter dynamics. Funded by the Marie Skłodowska-Curie Actions programme, the OptoTransport project aims to harness the unique properties of monolayer materials to explore exotic many-body phenomena that emerge due to the complex interplay of optical and electronic excitations.

Objective

Van der Waals heterostructures consisting of atomically thin materials, such as graphene and Transition metal dichalcogenides (TMD), have generated a tremendous amount of excitement in physics over the past decade. Embedding these systems in optical cavities leads to new hybrid excitations, known as exciton-polaritons, which govern the properties of the light-matter system. In this action, we aim to harness the unique properties of monolayer materials to explore exotic many-body phenomena that emerge due to the complex interplay of optical and electronic excitations. First, we plan to develop a new prototyping platform to rapidly and deterministically prepare high-quality van der Waals heterostructures, which will allow us to investigate a wider range of parameters than ever before. Our broad physics goal is to understand how electron transport is influenced by the presence of exciton-polaritons in different scenarios. In the first set of experiments, we will investigate polaron physics in a Bose-Fermi mixture formed by electrons and polaritons in a single TMD monolayer from a transport perspective. This will subsequently pave the way to exploring novel approaches to enhance interactions between electrons using exciton-polaritons as a mediator. A potentially ground-breaking consequence of our work will be the light-induced modification of transport properties of the system and in particular the enhancement of the critical temperature for superconductivity. The proposed research will therefore have a significant impact on our understanding of transport phenomena.

Fields of science (EuroSciVoc)

Programme(s)

Topic(s)

Funding Scheme

MSCA-IF-EF-ST - Standard EF

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Call for proposal

(opens in new window) H2020-MSCA-IF-2018

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Coordinator

EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH
Net EU contribution
€ 191 149,44
Address
Raemistrasse 101
8092 Zuerich
Switzerland
Region
Schweiz/Suisse/Svizzera Zürich Zürich
Activity type
Higher or Secondary Education Establishments
Links
Total cost
€ 191 149,44