logo

korean english

게시판

Home > 게시판 > 세미나

고체전자구조계산연구실에서 서울대학교 물리학과 안준영 박사과정생을 초청하여 아래와 같이 세미나를 개최합니다.

학과 구성원 여러분의 많은 참석을 부탁드립니다.



○ 일시: 2018년 8월 1일(수) 오후 4:00

○ 장소: 물리학과 세미나실 (31355호)

○ 연사: Junyeong Ahn  (Center for Theoretical Physics, Seoul National University)

○ Title: Band Topology in Nodal Line Semimetals with Z2 Monopole Charges



○ Abstract:  Since the discovery of topological insulators and semimetals, there have been many efforts to classify and characterize topological phases of matters. In recent years, three concepts have emerged to become new trends in this direction: fragile topology, higher-order topology, and gap-closing objects (nodes) with multiple topological charges. In this seminar, I will talk about those new concepts based on my recent work on nodal line semimetals hosting nodal lines with two topological charges: one is the well-known pi Berry phase, and the other is the Z2 monopole charge. New analytic methods that I developed for calculating Z2 monopole charges allow systematic studies on this exotic topological charge, which have been difficult up to now. In addition to the theoretical analysis, I will also present a possible material realization based on my colleagues’ first-principles calculations.

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1090455
478 <9/8>Dynamics of one-dimensional electrons and exotic elementary excitations 2006.09.04 97095
477 2016학년도 2학기 콜로퀴움 일정 2016.08.02 97088
476 <11/27> Introduction to Terahertz and Infrared Spectroscopy 2013.11.21 97025
475 <12/7>유럽입자물리연구소에서의 CMS 실험 2007.12.03 96949
474 <Oct.20(Tue) 10:00-12:00> Novel quantum transport in Weyl semimetals and double-Weyl semimetals 2015.10.23 96892
473 <5/14> Synthesis of Two Dimensional Materials by Chemical vapor deposition 2014.05.07 96811
472 <11/4>Plasmonic Properites of Metallic Nanostructures 2009.10.30 96786
471 <6/12> Latest Results from the IceCube Neutrino Observatory 2013.06.07 96784
470 <10/12> Kondo Effect in a Quantum-Dot-Topological-Superconductor Junction: A Numerical Renormalization Group Analysis 2012.10.08 96681
469 <Sep. 30(Wed.) 4:30 PM>Local electronic structures of stacking grain boundary in bilayer graphene 2015.09.23 96642
468 <1/26> Hamiltonian formalism 2011.01.19 96621
467 <4/17> Probing Stellar Explosions with Radioactive Beams* 2013.04.10 96539
466 <11/20> Particle Accelerators: Driving Forces for Energy 2009.11.16 96168
465 <4/3> Spin-orbit coupling induced Mott insulating state 2009.03.13 96143
464 <5/23> Nanotechnology in Korea: Present Status and Perspective 2008.05.21 95976
463 <10/13> What has happened in the beginning of the universe? 2006.10.11 95906
462 <9/18> 생체계에서의 협동현상: 박테리아 수영에서부터 고분자 수송현상까지 2009.09.14 95509
461 <Mar.27(Wed.)> Ultrafast Movie Maker for Photo-induced Dynamics: Ultrafast Electron Microscope 2019.03.20 95509
460 <9/11> Epitaxial Oxygen Sponge 2013.09.09 95483
459 <10/5> Acoustic Metamaterials and Reversal of Sound 2011.09.26 95384