報(bào)告題目: Fractional charge andbulk-disclination correspondence

報(bào)告人：蔣建華 教授

主持人：段純剛 教授

時(shí)間：11月10日下午14:00

地點(diǎn)：閔行校區(qū)物理樓226報(bào)告廳

報(bào)告人簡(jiǎn)介：

中國(guó)科學(xué)技術(shù)大學(xué)本科(2004年)、碩博連讀博士(2010年)。先后在以色列Weizmann研究所和加拿大多倫多大學(xué)從事博士后研究。2015年起任蘇州大學(xué)物理學(xué)院教授。發(fā)表 70余篇同行評(píng)審學(xué)術(shù)論文（含Nature, Nature Physics, PRL等）。擔(dān)任“全國(guó)統(tǒng)計(jì)物理與復(fù)雜系統(tǒng)新葡的京集團(tuán)3512vip”學(xué)術(shù)委員會(huì)委員，“全國(guó)超材料大會(huì)”理事會(huì)理事，《ChinesePhysics Letter》,《Chines PhysicsB》,《中國(guó)物理學(xué)報(bào)》和《物理》雜志青年編輯等學(xué)術(shù)兼職。

報(bào)告摘要:

Perhaps, the most fundamentalphenomenon in topological physics is the bulk-edge correspondence. Recentstudies reveal that many topological crystalline materials such as higher-ordertopological insulators, however, do not exhibit bulk-edge correspondence andare hence difficult to identify in experiments. Here, we demonstrate thatbulk-disclination correspondence, manifesting fractional charge atdisclinations depending on the bull band topology, is a novel phenomenon whichis useful in experimentally distinguish various topological crystalline phases.We create a photonic analog of topological crystalline insulators and measurethe photonic fractional charge via the classical analog of the Purcell effect.Our study provides the first example of bulk-disclination correspondence andunveils a new horizon for the study of topological physics.