Topological Dirac line nodes in centrosymmetric semimetals
2015.11.04 17:14
| 장소 | E6-2, #5318 |
|---|---|
| 일시 | 2015/11/06, 4:30 PM |
| 연사 | Dr. Youngkuk Kim (University of Pennsylvania) |
Topological Dirac line nodes in centrosymmetric semimetals
Dr. Youngkuk Kim, University of Pennsylvania
Nov. 6 (Fri), 16:30 PM, #5318(E6-2)
Dirac line nodes (DLNs) are one-dimensional Dirac nodes of energy manifolds in momentum space. In the presence of inversion symmetry and time-reversal symmetry, crystals with vanishing spin-orbit coupling can host topologically protected DLNs.
Recently, we have proposed and characterized a novel Z2 class of the DLN semimetals [1]. Z2 topological invariants, dictating the presence of DLNs, are developed based on the parity eigenvalues at the parity-invariant points of reciprocal space. Our first-principles calculations show that DLN semimetals can be realized in Cu3N in anti-ReO3 structure via metal-insulator electronic transition, driven by transition metal doping. We will also discuss the surface consequence and the effect of spin-orbit coupling of DLN materials.
[1] Youngkuk Kim, Benjamin J. Wieder, C. L. Kane, and Andrew M. Rappe, Phys. Rev. Lett. 115, 036806 (2015)
Contact: MyungJoon Han, Physics Dept., (mj.han@kaist.ac.kr)
댓글 0
| 번호 | 일시 | 장소 | 연사 | 제목 |
|---|---|---|---|---|
| 공지 | 2019/09/18 - 12/5 | Seminar Room #1323 | Prof. David Schuster and etc. | Fall 2019: Physics Seminar Serises |
| 공지 | 2019/09/02 - 12/09 | Seminar Room 1501 | 이호성 박사 (한국표준과학연구원) and etc. | Fall 2019: Physics Colloquium |
| 274 | 2015/03/09-06/08 | E6, 1501 | 최현용교수(연세대) 외12명 |
Physics Colloquium : 2015 Spring
 |
| 273 | 2015/03/13, 2PM | Connect Room, KI Bldg. |
The 15th Innovative Workshop on Soft/Bio Materials
| |
| 272 | 2015/06/03, 12PM | Room 101, E11 | Prof. Min-Kyo, Seo & Hansuek, Lee(KAIST) |
The First Wednesday Multidisciplinary Forum
|
| 271 | 2015/07/15, 2PM | E6-2,1323 | Dr. Se Young Park(Rutgers Univ.) | Electronic and optical properties of titanate-based oxide superlattices |
| 270 | 2015/07/16, 4PM | E6-2, 1318 | Dr. Kyunghan Hong(MIT) | Next-generation ultrafast laser technology for nonlinear optics and strong-field physics |
| 269 | 2015/07/16-07/17 | E6-2, 1501 | Sang-Wook Cheong (Rutgers Univ.) | KAIST Physics Distinguished Lecture |
| 268 | 2015/07/23,1:30PM | E4, B401 | Prof. Gilles Lérondel (Univ. of Technology of Troyes) |
Enhanced ZnO based UV photonics and related applications
|
| 267 | 2015/08/03,10:30AM | E6-2, #1323 (Seminar Room) | Dr. Jonghee Yoo (Fermi National Accelerator Laboratory, USA ) | Axion Search |
| 266 | 2015/08/04, 11PM | B501, Room Red, KI bldg. 5nd fl. | Dr. Eric Jin Ser Lee(Univ. of Manitoba, Canada) | Propagation of ultrasound through two- and three-dimensional strongly scattering media |
| 265 | 2015/09/07, 3PM | E6-2. 1st fl. #1318 | Dr. Jasbinder Sanghera (U.S. Naval Research Laboratory (NRL)) | Advanced Optical Materials and Devices at NRL |
| 264 | 2015/09/07-12/01 | E6, 1501 | 문은국 교수(KAIST) 외 |
Physics Colloquium : 2015 Fall
|
| 263 | 2015/09/14, 2PM | E6-2. 2nd fl. #2501 | Dr. Hae Ja Lee ( Stanford University, SLAC ) | Ultrafast X-ray Studies on Dynamics Matter in Extreme Conditions |
| 262 | 2015/09/15-12/08 | E6, 1501 | 박제근 교수(서울대 물리학과) 외12명 |
Physics Colloquium : 2014 Fall
|
| 261 | 2015/10/14, 6PM | KAIST Munji Campus Supex Hall | 이창환 교수 (부산대학교 물리학과) |
인터스텔라 영화 속의 물리
|
| 260 | 2015/10/15, 10AM | E6-2, 5th fl. #5318 | Dr. Mark D. Bird (Florida State University) | Development of Large-Bore, High Field Magnets at the NHMFL |
| 259 | 2015/10/16, 3PM | E6-2, 5th fl. #5318 | Dr. Pierre Pugnat , (CNRS-LNCMI) | High Magnetic Fields to Probe the sub-eV range of Particle/Astroparticle Physics - From the OSQAR experiments at CERN up to new perspectives at LNCMI-Grenoble |
| 258 | 2015/10/16, 4PM | E6-2. 2nd fl. #2501 | Prof. Yung-Fu Chen(Solid-state Laser Physics Laboratory,National Central University) | Fluctuations of entropy production in partially masked electric circuits |
| 257 | 2015/10/23, 3PM | E6-2, #5318 | Dr. Helmut Soltner (Forschungszentrum Juelich) | Development of a Rogowski Coil as a new beam position monitor |
| 256 | 2015/10/23-12/4 10:30 AM | E6, #1501 | Prof. YongKeun Park & Prof. Tae-Young Yoon | How to write a good scientific paper[Open lecture series] |
| » | 2015/11/06, 4:30 PM | E6-2, #5318 | Dr. Youngkuk Kim (University of Pennsylvania) | Topological Dirac line nodes in centrosymmetric semimetals |