Topological Dirac line nodes in centrosymmetric semimetals
2015.11.04 17:14
| 날짜 | 2015-11-06 16:30 |
|---|---|
| 일시 | 2015/11/06, 4:30 PM |
| 장소 | E6-2, #5318 |
| 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 | 날짜 | 장소 | 제목 |
|---|---|---|---|
| 533 | 2017-04-27 16:00 | Seminar Room(#1323, E6-2) | 반도체 양자점을 이용한 단광자 광원 |
| 532 | 2017-03-06 16:00 | Seminar Room 1501 |
Spring 2017: Physics Colloquium
 |
| 531 | 2019-09-02 16:00 | Seminar Room 1501 |
Fall 2019: Physics Colloquium
|
| 530 | 2017-03-21 16:00 | Seminar Room 1323 |
Spring 2017: Physics Seminar Serises
|
| 529 | 2018-07-02 15:00 | Seminar Room (C303), Creation Hall (3F), KAIST Munji Campus |
High Precision Magnetic Field Measurement for the Muon g-2 Experiment
|
| 528 | 2017-12-14 15:00 | Seminar Room (C303), Creation Hall (3F), KAIST Munji Campus | Exploring the Universe via GWs in the era of multi-messenger astronomy |
| 527 | 2016-06-14 16:00 | Seminar Room (#2502, 2nd fl.) | Photonic quantum network based on multimode squeezed vacuums and single-photon subtraction |
| 526 | 2016-11-01 14:30 | Seminar Room #1323(E6-2) | Search for dark sector particles in the B-factory experiments |
| 525 | 2019-09-18 16:00 | Seminar Room #1323 |
Fall 2019: Physics Seminar Serises
|
| 524 | 2018-07-27 15:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). |
Muon g-2 in the 2HDM and MSSM: comprehensive numerical analysis and absolute maxima
|
| 523 | 2018-07-27 15:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). |
Muon g-2 in the 2HDM and MSSM: comprehensive numerical analysis and absolute maxima
|
| 522 | 2018-07-26 14:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). |
Inflation in String Theory and Backreaction
|
| 521 | 2018-07-26 14:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). |
Inflation in String Theory and Backreaction
|
| 520 | 2018-07-13 14:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6). | Loop Induced Single Top Partner Production and Decay at the LHC |
| 519 | 2018-07-12 17:00 | Room 5318, KAIST Natural Sciences Lecture Hall(E6) | The MilliQan Experiment: Search for Milli-Charged Particles at the LHC |
| 518 | 2023-04-04 16:00 | Room 2501, KAIST Natural Sciences Lecture Hall(E6) | Chiral Magnetism: A Geometric Perspective |
| 517 | 2023-02-20 16:00 | Room 1323, KAIST Natural Sciences Lecture Hall(E6) | Physics of ferromagnet/superconductor junctions |
| 516 | 2015-06-03 12:00 | Room 101, E11 |
The First Wednesday Multidisciplinary Forum
|
| 515 | 2017-04-05 12:00 | Room 101, Creative Learning Bldg.(E11) |
2017년 4월 첫수 융합포럼 개최 안내(물리학과 & 원자력 및 양자공학과 공동 개최)/The First Wednesday Multidisciplinary Forum in April 2017 organized by Dept. of Physics & Dept. of Nuclear & Quantum Engineering
|
| 514 | 2019-01-23 16:00 | Rm. C303, Creation Hall (3F), Munji Campus |
Ultrasensitive Microwave Bolometer: Opportunity for Axion Detectors
|