新闻与活动
xin wen yu huo dong
本学期学术活动
  • 2023-0925
      题目:磁性拓扑:外尔电子走向磁报告人:刘恩克,中科院物理所时间:2023-09-26 10:00地点:理科楼C302摘要:磁性外尔半金属是能带拓扑特征同长程磁序相结合的一种新物态,有望带来丰富的磁相关电子物性和物态。本报告将从磁电输运领域最经典的反常霍尔这一效应的物理本质出发,讲述首个磁性外尔半金属Co3Sn2S2的实现,进而介绍在磁性拓扑体系中观察到了巨反常霍尔效应、巨横向热电能斯特效应、自旋轨道极化子、线性正磁电阻、...
  • 2023-0925
      报告题目:理学院科学之美讲坛:量子物质中的演生现象及应用报告人:陈仙辉 院士中国科学技术大学报告时间:2023-09-28 14:00报告地点:理科楼郑裕彤讲堂主办单位:理学院(主办),物理系(承办)简介:量子材料是由上世纪80年代提出的“关联电子材料”概念扩展而来的,目前还包含拓扑、新型磁性、多铁性等材料体系,由于这些体系中存在复杂的相互作用(如电子强关联作用、量子纠缠以及多自由度耦合等),往往表现出丰富的演生现象(...
  • 2023-0922
      报告题目:基于长程电荷序量子效益的新原理半导体器件探索报告人:韩拯教授(山西大学)时间::2023年9月22日 (周五) 上午10:00地点:清华-富士康纳米研究中心4楼报告厅报告内容:Over the past half-century, exciton insulators have been observed in various experimental systems, predominantly through indirect spectroscopic studies. However, there is a notable lack of studies on the electrical transport and gat...
  • 2023-0920
      Title: Fermion-to-qubit mappings in two spatial dimensionsSpeaker: Yu-An Chen (陈昱安), Peking UniversityDate/Place:9月25日周一下午2:30,理科楼C302Abstract: The talk discusses the relationship between fermionic observables and Pauli matrices on two-dimensional lattices. First, it will introduce the exact bosonization method. It is argued that all fermion-to-qubit mappings can be obtained from ...
  • 2023-0919
      Title:Evidence of finite momentum pairing in a centrosymmetric bilayerSpeaker:赵冬,德国马克斯普朗克固态研究所Date/Place:9月21日上午10:30,理科楼C302Abstract:A phase characterized by a spatially-modulated order parameter is counter-intuitive because of the entropy penalty that the modulations incur. Its possible existence in superconductors was first proposed under conditions that the forma...
  • 2023-0918
      报告题目:Piezomagnetism and noncollinear spin current without spin-orbital coupling报告人:Prof. Junwei Liu,The Hong Kong University of Science and Technology时间:2023年09月20日14:00地点:理科楼三楼报告厅(C302)报告摘要:In this talk, I will take our recently proposed new type of spin-valley locking (SVL), named C-paired SVL, in antiferromagnetic systems. It directly connects the spin/valle...
  • 2023-0918
      报告题目:IV-VI族二维铁电半导体面内超晶格与铁电隧道结报告人:常凯,北京量子信息科学研究院时间地点:9月19日上午10:00,理科楼C302摘要:利用二维材料不仅可以方便地构造竖直方向的异质结,也可以构造高质量的面内异质结。具有一维界面的面内异质结和超晶格在制备各种纳米线、量子点、隧道结、约瑟夫森结等低维结构方面有得天独厚的优势,有望在下一代逻辑和存储器件、量子计算器件的开发中起到重要作用。然而,受限于生长...
  • 2023-0918
      报告题目:负离子的故事报 告 人: 宁传刚教授,清华大学物理系报告时间:9月21日(周四) 14:30-15:30报告地点:理科楼郑裕彤讲堂摘要:负离子具有独特的性质,在很多重要的物理化学过程中都扮演重要角色。过渡族元素由于能级结构复杂,传统谱学方法很难研究其原子负离子,大多数过渡族元素的电子亲和势和负离子的能级结构都是未知的。报告人新建了一套冷离子-慢电子速度成像联用的高分辨光电子谱仪,利用这套谱仪精密测量了...
  • 2023-0915
      报告题目:物理系colloquium:Magnonics and Ferronics报告人:Gerrit Ernst Wilhem BauerChair Professor at the Kavli Institute for Theoretical Science,Professor and PI at the Advanced Institute of Material Science of Tohoku University报告时间:2023-09-21 16:00报告地点:理科楼郑裕彤讲堂主办单位:物理系简介:The duality between electric and magnetic dipoles in electromagnetism only partly applies to conde...
  • 2023-0911
      Time: 10:00 am, Sep 14th (Thursday), 2023Location: 理科楼C302Title: Loosely bound states in relativistic nuclear collisionsSpeaker: Peter Braun-Munzinger (EMMI)Abstract: Light nuclei and hyper-nuclei are copiously produced in nuclear collisions at hadron colliders. We will present the experimental situation and discuss how such fragile structures are produced close to the QCD phase boundary, ev...