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 1079495
566 <11/13> Computer-Aided Engineering for Nucleic Acid Nanostructures 2013.11.07 113447
565 <5/21> Magnetism and Superconductivity 2014.05.14 113377
564 <11/13(Tue.) 11:00am>Hund’s coupling driven role of $d_{3z^2-r^2}$ in stabilizing the hole-doped antiferromagnetic state in cuprates 2018.11.09 113044
563 <5/28> The hunt for high energy neutrinos with IceCube - more evidence for their astrophysical origin 2014.05.22 112916
562 <5/1> Entanglement and topological order in 1D and 2D systems 2013.04.18 112818
561 <10/15> How can population pyramids be used to explore the past? 2010.10.14 112520
560 <11/16> Study of carrier transport and charging effects in organic devices 2011.11.10 112449
559 <4/18> Action-angle variables for the near-horizon extreme black hole particle dynamics 2012.04.17 112020
558 <5/27(수) 오후4:30분>Controlling phases in epitaxial transition metal oxide thin films 2015.05.21 111889
557 <Oct.10(Wed.) 4:30 PM> Standard Model of Cosmology and Beyond 2018.09.21 111171
556 <9/11> Complex networks in technology, biology and sociology 2009.09.04 111162
555 <2/1> The Surface Science of Adsorption on Crystalline Ferroelectric Polymer Surfaces 2010.01.25 110940
554 <Oct. 28(Wed.) 4:30 PM> Anomalous diffusion of single-molecules in living cells: at the interface of biology and statistical physics 2015.10.19 110650
553 2018학년도 1학기 콜로퀴움 일정 2018.01.03 110590
552 <4/16> Lasers, Microscopes, and Superconductors: Laser Scanning Microscopy of Superconducting Circuits 2014.04.10 110488
551 <11/9> Bosons in high Tc superconductors: an experimental survey 2011.10.31 109773
550 <1/24> Basics of Gravitational Perturbatiosn 2011.01.19 109495
549 <6/8> 액체금속 및 물의 과냉각 현상과 국소구조와의 관계 : 정전기 공중부양 기술 및 dynamic diamond anvil cell 2011.06.07 109296
548 <6/2>백색 LED를 이용한 반도체조명에 관하여 2006.05.29 109117
547 <4/27> RENO Reactor Neutrino Experiment 2011.04.18 109050