【学术视频】超导新前沿国际研讨会 | 加州大学伯克利分校陈国瑞博士

更多精彩视频登陆网站

www.koushare.com

图 | 陈国瑞

题   目：Tunable correlated and topological phenomena in ABC trilayer graphene moiré superlattices

报告人：陈国瑞单   位：UC Berkeley时   间：2019-11-12地   点：中国科学技术大学

扫码观看精彩报告视频

报告摘要

Mott insulator is a central concept in strongly correlated physics and manifests when the repulsive Coulomb interaction between electrons dominates over their kinetic energy. A tunable Mott insulator, where the competition between the Coulomb interaction and the kinetic energy can be varied in situ, can provide an invaluable model system for the study of Mott physics. In this talk, I will discuss a general route to engineer strongly correlated physics in two-dimensional moiré superlattices, and show the experimental realization of a tunable Mott insulator in the ABC stacked trilayer graphene (TLG)/hBN moiré superlattice. The moiré superlattice in TLG/hBN heterostructures leads to narrow electronic minibands and allows for the observation of gate-tunable Mott insulator states at 1/4 and 1/2 fillings. Interesting signatures of superconductivity are observed at low temperature near the 1/4 filling Mott insulating state in the TLG/hBN heterostructures. A topological Chern insulator with Chern number C=2 and ferromagnetism are experimentally observed in the non-trivial band in trilayer graphene system, which makes it possible to study Mott, superconductivity and topological physics in one system.

个人简介

陈国瑞，加州大学伯克利分校博士后。2010年本科毕业于山东大学物理与微电子学院，2016年博士毕业于复旦大学物理系并留校任博士后，2017年至今为美国加州大学伯克利分校物理系博士后。研究兴趣主要在高质量二维材料及其范德瓦尔异质结，尤其是石墨烯的强关联和拓扑效应的量子输运。近年来在Nature, Nature Physics, Nature Materials, Nature Nanotechnology, PRL和Nano Letters等杂志期刊发表十多篇文章，被引用1000多次。

会议简介

The Physical Review Workshops focus on topics that straddle traditional subject boundaries and new ones that are starting to “emerge from the noise”. The present workshop the first to be held far away from Long Island.Collectively, the goal of these workshops is to provide a setting to promote open and informal discussions and the exchange of information needed to help assess the promise and challenges of an emerging field. With this in mind, the workshops comprise only a limited number of presentations and leave considerable room for informal conversations, round-table discussions, and social activities.

主办方：中国科学技术大学

—— ——往期精彩回顾—— ——●【学术视频】超导新前沿国际研讨会 | 东京大学Takeshi Konda博士：Electronic Structure of Multilayered Cuprates Revealed by Laser-ARPES

END

为满足更多科研工作者的需求，蔻享学术推出了蔻享APP以及相应的微信公众号，并开通了各科研领域的微信交流群。

蔻享APP

蔻享学术公众号

进群请添加微信：18256943123

小编拉您入群哟！未经许可，禁止转载本页内容转载授权请联系：[e-mail]戳这里，观看精彩视频哟！