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05-08
Excited State Ultrafast Dynamics of Superconductors and Topological Materials
I will first address our ultrafast spectroscopy investigations of iron-based high temperature superconductors, showing that there is a ubiquitous positive correlation between the electron-phonon coupl...
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05-08
飞秒高次谐波极紫外激光及其多模式纳米成像技术
极紫外和软X射线光波拥有极短波长和丰富的元素吸收边，是研究纳米结构，半导体器件，量子材料必不可少的工具。随着极紫外光刻技术实现量产，极紫外光应用也正式“走入”千家万户。然而，迄今为止，高效率低成本产生极...
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05-08
笼目金属材料探索和关联拓扑效应研究
笼目（Kagome）晶格因为具有非平庸的拓扑电子结构，比如狄拉克节点、平带和鞍点等，以及阻挫磁性而引起了人们的广泛关注。在这次报告中，我将简要介绍我们对于Fe3Sn2、Co3Sn2S2、YMn6Sn6、AV3Sb5 (A = Rb and Cs)等几...
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05-08
Emergent space-time from a quantum phase transition and its experimental tests in cold atom systems.
P.W. Anderson said " More is different ". It says the macroscopic quantum phenomena such as superfluids, superconductors, quantum anti-ferromagnetism, fractional quantum Hall states, etc emerge as the...
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05-08
奇特强子态与强子结构
强子，包括介子和重子，是能从物质中分离出来的、已观测到具有内部结构的最小单元。寻找新强子态、探索强子内部的夸克-胶子结构是粒子物理和中高能核物理共同关心的交叉前沿课题。近年来，越来越多的超出经典夸克模型...
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05-08
Cosmology with Massive Neutrinos
Ghostly neutrino particles continue to bring surprises to fundamental physics, from their existence to the phenomenon of neutrino oscillation, which implies their nonzero masses. Their exact masses, a...