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学术活动
  • 2023-1030
      题目: 核子基本性质的未解之“谜”报告人: 彭潮(美国阿贡国家实验室)时间: 2023年10月30日 (周一) 15:00地点: 理科楼 B315摘要: 核子(质子、中子)是构筑我们可观测宇宙的基石。现代研究中,核子常被视为由夸克和胶子组成的动态复杂系统。量子色动力学(QCD) 所描述的强相互作用力主导了该系统中基本自由度之间的相互作用。核子研究的终极目标之一是描述核子如何从最基本的自由度——夸克胶子间的相互作用中“涌现”。这...
  • 2023-1027
      报告题目:物理系colloquium: 自旋轨道相互作用与重离子碰撞过程整体极化效应 报告人:梁作堂山东大学报告时间:2023-11-02 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系  简介:自旋轨道耦合是相对论运动的系统中相互作用的基本属性, 强相互作用中的自旋轨道耦合使得夸克轨道角动量在高能自旋物理中起到了极其重要的作用。 本报告将简单叙述质子内夸克轨道角动量存在的必然性以及它在解释高能反应一系列意外自旋效应中的特...
  • 2023-1027
      Title: Higher-point AdS amplitudes from flat space and factorization Speaker: Xinan Zhou 周稀楠 (University of Chinese Academy of Sciences)Time: 2:00 pm, Nov 2 (Thursday) 2023Location: 理科楼C302Abstract: Much of the modern developments of holographic correlators is based on bootstrap methods. These methods rely heavily on the use of superconformal symmetry and become increasingly cumbersome wh...
  • 2023-1026
      报告题目:The Quantum Twisting Microscope报告人:Jiewen Xiao,Weizmann Institute时间: 10月30日上午10:00地点:理科楼三楼报告厅摘要:Measuring the energy-momentum dispersion relation in quantum materials can provide key insights into their strongly correlated electronic phenomena. We have recently demonstrated a new type of a scanning probe microscope – the Quantum Twisting Microscope (QTM)1 – ...
  • 2023-1023
      报告题目:原子尺度的极化子操控研究报告人:付英双 教授,华中科技大学报告时间:2023年10月26日10:00报告地点:理科楼三楼报告厅(C302)报告摘要:极化子作为单个电子和晶格畸变关联作用而形成的准粒子,在电荷输运、巨磁电阻、高温超导以及热电和多铁效应等物理过程中具有重要作用。传统上对极化子的研究采用系综平均的宏观测量手段,在原子尺度研究单个独立极化子的行为对揭示电子-晶格耦合的关联物理机制具有重要作用,但...
  • 2023-1023
      告题目:物理系colloquium: Recent progress in anomalous Hall effect in ferromagnetsand antiferromagnets 报告人:姚裕贵北京理工大学报告时间:2023-10-26 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系  简介:The anomalous Hall effect (AHE) is a fundamental phenomenon related to magnetism in solid-state physics, in which a transverse voltage drop is induced by a longitudinal electric field [1, 2]. Alt...
  • 2023-1023
      Title: Everything Everywhere All at Once: Holographic Entropy Inequalities, the Topology of Error Correction, Black Holes, Cubohemioctahedron, and (maybe) the Toric Code Speaker: Bartek Czechn (Tsinghua University)Time: 2:00 pm, Oct 26 (Thursday) 2023Location: 理科楼C302Abstract: An important class of quantum states are those whose entanglement entropies can be computed by minimal cuts through...
  • 2023-1020
      报告题目: Integer and fractional quantum anomalous Hall effects in 2D semiconductor moiré superlattices报告人: 李听昕,上海交通大学时间地点: 10月25日上午10:00,理科楼C302摘要:The emergence of topological moiré flat bands provides exciting opportunities to realize the lattice analogs of both the integer and fractional quantum Hall effects without the need for an external magnetic field. These e...
  • 2023-1019
      题目:自旋轨道矩磁存储器研究与大规模集成报告人:蔡凯明,华中科技大学时间:2023-10-23 16:00地点:理科楼C302摘要:在自旋电子学领域,基于自旋的磁性随机存储器(MRAM)具备高速、低功耗和非易失性等优势,有望成为突破集成电路“后摩尔时代”瓶颈的解决方案之一。目前,第二代基于自旋转移矩(spin-transfer torque,STT)的磁性存储器STT-MRAM已经实现全面商业化量产,开始在嵌入式系统中投入使用,以提升数据存储和计算...
  • 2023-1018
      报告题目:Time-resolved photoemission: From bandstructure to orbital movies报告人:Ulrich Höfer,Philipps University of Marburg报告时间:2023年10月19日09:00报告地点:理科楼C302报告摘要:Time-resolved photoemission combines femtosecond pump-probe techniques with angle-resolved photoelectron spectroscopy (ARPES). Recent developments enable the method to track electron motion in two-dimensional mo...