Electronic properties of hybrid 2D-ferroelectric structures


CALL: 2016

DOMAIN: MS - Materials, Physics and Engineering


LAST NAME: Kreisel




KEYWORDS: 2D Ferroelectric materials, electronic devices, transition metal, atomistic modelling

START: 2017-05-22

END: 2020-05-21

WEBSITE: https://www.list.lu/

Submitted Abstract

The aim of 2D-FERRO is to welcome Prof. Alexei Gruverman, from the University of Nebraska (USA), as a 6-months visitor over 3 years in the group “Ferroic Materials for Transducers – FMT” at the Luxembourg Institute of Science and Technology -LIST.Prof. Alexei Gruverman is a renowned expert of nanoscale phenomena in a wide range of electronic and functional materials, such as ferroelectrics, multiferroics, piezoelectrics and photoferroelectrics. Recently his work focuses on electronic properties of hybrid 2D ferroelectric (FE) structures. Gruverman is also a world-leading expert in Scanning Probe microscopy (SPM) and has published more than 160 papers (h-index: 53).The hosting group FMT was founded in September 2012 by Prof. Jens Kreisel within a FNR-PEARL award. The overall objective of the group is to acquire a broad knowledge of coupling phenomena in ferroic and multiferroic materials with the aim of discovering new general concepts, clearing the way for both understanding and applications. Beyond their traditional topics like piezoelectrics, calorics and the interaction of light with ferroics (including Raman spectroscopy), the group has decided to extend its activities towards 2D FE materials. Prof. Gruverman’s stay at LIST will allow accelerating FMT’s stepping into the topic.The main scientific objective of the proposed research is the understanding of electronic devices comprising 2D materials and ferroelectric (FE) thin films (2D-FE). Specifically, we wish to understand the intriguing electronic properties of hybrid 2D-ferroelectric structures, which are triggered by the polarization at the surface of the ferroelectric layer. While many 2D materials may be considered in conjunction with FEs, this project will primarily focus on 2D transition metal dichalcogenides, such as MoS2 and WS2. The collaboration between Gruverman and FMT will be two-fold. First, we will jointly investigate 2D-FE systems, namely via SPM (Nebraska), Raman spectroscopy (LIST) and their combination (LIST). Second, the most interesting experimental results will be investigated by atomistic modeling (LIST) to separate intrinsic from extrinsic phenomena. Here, we will collaborate with the 2D-dichalcogenides theory-expert Prof. Ludger Wirtz from the Univ. of Luxembourg, hereby reinforcing the strategic collaboration between LIST and uni.lu. Gruverman’s stay will allow the LIST team to improve the general quality of their core work on 2D-FE systems, and to significantly increase the visibility and impact of their research.

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