The MCQST Colloquium Series features interdisciplinary talks given by visiting international speakers. The monthly colloquial covers topics spanning all MCQST research units and will be broadcasted live, being made available to audiences worldwide. The main goal of the series is to create the framework for idea exchange, to strengthen links with QST leading groups worldwide, as well as to act as an integral part of the local educational environment.

MCQST Colloquium: Jie Shan

On October 26th 2021, we are excited to invite you to the colloquium offered by Jie Shan, Professor at Cornell University.

Talk & Abstract

Electrons in 2D moiré superlattices

When two van der Waals materials of slightly different orientations or lattice constants are overlaid, a moiré pattern emerges. The moiré pattern introduces a new length scale, many times the lattice constant of the original materials, for Bragg scattering of the Bloch electrons in each layer. This gives rise to moiré minibands and rich emergent quantum phenomena. In this talk,I will discuss recent experiments on angle-aligned semiconductor heterobilayers, which exhibit remarkable correlated insulating states [1,2,3]. I will also discuss the prospect of using moiré superlattices as a quantum simulator.
1. Y. Tang et al., Nature 579, 353-358 (2020).
2. Y. Xu et al., Nature 587, 214–218 (2020).
3. C. Jin et al., Nat. Mater. 20, 940-944 (2021).

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