logo

korean english

게시판

Home > 게시판 > 세미나

고체전자구조계산연구실에서 아주대학교 임준원 교수님을 초청하여 아래와 같이 세미나를 개최합니다.

학과 구성원 여러분의 많은 참석을 부탁 드립니다.

온-오프 혼합으로 진행되는 세미나입니다.

===========================================================================

Title: Flat bands and the geometry of Bloch wave function


Speaker: 임  준   원  교수님 (아주대학교)


Date/time: 2021. 5. 4 (Tue.) 16:30


○ 온라인 참여방법: 아래의 WebEx 링크 접속
    https://skku-ict.webex.com/meet/youngkuk


○ Place: Natural Science 1,  Room No. 31214


Abstract: Since the discovery of the superconductivity in the twisted bilayer graphene, which hosts nearly flat bands at the magic angle, flat band
systems have been studied intensively recently. In the topological sense, flat bands are believed to be trivial because the corresponding Bloch
wavefunction is analytic in the Brillouin zone. However, in the point of view of other geometric notions, such as the quantum distance and the
cross-gap Berry connection, the flat bands can be considered non-trivial. We show that flat bands can exhibit anomalous Landau level structures
under the magnetic field, and they can be characterized by such geometric properties of the Bloch wave function.
Reference:
[1] Phys. Rev. B 99 045107, Jun-Won Rhim and Bohm-Jung Yang (2019)
[2] Phys. Rev. Lett. 124 183901, Jina Ma, Jun-Won Rhim, et al (2020)
[3] Nature 584 59, Jun-Won Rhim, Kyoo Kim, and Bohm-Jung Yang (2020)
[4] arXiv:2012.15132, Yoonseok Hwang, Jun-Won Rhim, and Bohm-Jung Yang (2021)
 


===========================================================================
온라인 참여방법
- 웹캠이 있는 PC, 스마트폰 및 태블릿 등에 Webex meetings 프로그램/어플리케이션 설치 및 실행
 
- PC 다운로드 링크 : https://www.webex.com/downloads.html
 
- 설치→손님으로 사용→접속자 정보 입력→미팅정보입력란에 URL(skku-ict.webex.com/meet/youngkuk) 입력 후 참여
※ 장비의 외장스피커를 활용하시기보다는 헤드폰, 이어폰을 사용하여 접속하여 주시기를 권장 드립니다.
===========================================================================

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1078394
16 <12/3> Magnetic couplings, optical spectra, and spin-orbit exciton in 5d Mott insulator Sr2IrO4 2012.11.26 400082
15 <11/21> Cosmological viable scalar-tensor theories of gravity 2012.11.16 104987
14 <11/5> Optical spectroscopic probe on the surface state in three dimensional topological insulators 2012.10.24 77325
13 <10/24> Dung-hai Lee 교수와의 간담회 2012.10.23 71255
12 <11/22> Spin polarization of photoelectrons from a topological insulator 2012.10.22 70846
11 <10/23> Measuring Transfer Reactions with Radioactive Beams 2012.10.15 86509
10 <10/12> Kondo Effect in a Quantum-Dot-Topological-Superconductor Junction: A Numerical Renormalization Group Analysis 2012.10.08 93134
9 <10/5> Gauge fields. Past, present, future. 2012.10.05 71210
8 <10/8 (월)>물리학과 특별세미나 개최 안내 2012.10.05 97526
7 <9/20> Time-reversal anomaly in Josephson effect involving Majorana fermions 2012.09.20 205023
6 <9/14> High temperature superconductivity and fluctuating stripe 2012.09.10 70578
5 <9/7> On Dark Matter and its indirect detection with box-shaped gamma-rays 2012.09.05 71476
4 <9/7(금)> Kondo Effect in Chiral Orbital Bands 2012.08.31 76378
3 <8/7> Scotch tape and spectroscopy: probing and manipulating the surface of a topological insulator 2012.07.27 90161
2 <7월27일>Correlated topological phases in 3D complex oxides via Green's functions 2012.07.27 95272
1 <6/21> Nuclear Astrophysics in Effective Field Theories 2012.06.20 84498