【大学频道】北京大学量子材料科学中心呈献 | 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：Graphene: Plays More Than One Tune

报告人：陈国瑞单   位：UC Berkeley时   间：2020-01-15地   点：北京大学

扫码观看精彩报告视频

报告摘要

2D material is a highly tunable system that provides the opportunity to design, create and study different physics for purpose. In this talk, I will take graphene as an example to show how we tune the electronic properties of graphene and study different physics varying from single-particle physics, to strongly correlated physics and topological physics. In particular, I will start from the band engineering of graphene on hBN moire superlattice. Then 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. Based on the trilayer graphene system, interesting signatures of superconductivity are observed at low temperatures near the 1/4 filling Mott insulating state. By simply tuning the gate voltages, 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（导师张远波教授），2017年至今为美国加州大学伯克利分校物理系博士后（Prof. Feng Wang课题组）。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1500多次。同时担任Nature、Science、 NanoLetters等杂志的审稿人。

—— ——往期精彩回顾—— ——●【大学频道】北京大学量子材料科学中心呈献 | 中科院高能物理研究所缪平研究员●【大学频道】北京大学量子材料科学中心呈献 | Hiroshi Onishi of Kobe University:Pico-Newton force sensing at liquid-solid interfaces●【大学频道】北京大学量子材料科学中心呈献 | 因斯布鲁克大学Peter Zoller教授：Quantum computing & quantum simulation building quantum computers and simulators with atoms and lons●【大学频道】北京大学量子材料科学中心呈献 | Dan Shahar of The Weizmann Institute: Disordered superconductors near T=0●【大学频道】北京大学量子材料科学中心呈献 | 香港大学陈钢教授：Quantum excitations of "hidden orders" and Thermal transport of "hidden particles"●【大学频道】北京大学量子材料科学中心呈献 | 北京大学张亿博士：Machine Learning for Quantum Materials and Algorithms●【大学频道】北京大学量子材料科学中心呈献 | 中国人民大学刘正鑫教授：Quantum Spin Liquid Phases in Extended Kitaev Model●【大学频道】北京大学量子材料科学中心呈献 | 普林斯顿大学张骏祎：Dipolar Dimer Liquid

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！