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 |
| 70 | Nov. 1st (Tue), 10:30AM | #1323(E6-2 1st fl.) | Dr. Gadi Eisenstein, Technion | Time scale dependent dynamics in InAs/InP quantum dot gain media |
| 69 | Nov. 22th (Thur), 15:00 | E6 Room(#1323) | Prof. Suprijadi Haryono |
Experimental and Computational Study on Physical Properties based on Granular System
 |
| 68 | NOV. 23 (Fri), 03:00 PM | E6-2. 2st fl. #2501 | Prof. Sang-Jin Sin |
Entanglement string and Spin Liquid with Holographic duality
|
| 67 | Nov. 24(Thu) 4p.m. | #1323(E6-2. 1st fl.) | Dr. Jai-Min Choi, Chonbuk National Univiersity | Harmonic oscillator physics with single atoms in a state-selective optical potential |
| 66 | Nov. 28 (Tue.), 4:00 PM | #1323 (E6-2. 1st fl.) | Samindranath Mitra, Editor at Physical Review Letters |
Physics after the lab and the desk: Your work in PRL
|
| 65 | Nov. 29(Tue) 4p.m. | #1323(E6-2. 1st fl.) | Dr. SungBin Lee, KAIST | Symmetry Protected Kondo Metals and Their Phase Transitions |
| 64 | Nov. 3 (Fri.), 2:30 PM | #1323 (1st fl., E6-2.) | Dr. MinChul Lee(Department of Applied Physics, Kyung Hee Univ.) |
Quantum Resistor-Capacitor Circuit with Majorana Edge States
|
| 63 | Nov. 3 (Fri.), 4:00 PM | #1323 (1st fl., E6-2.) | Dr. SungDae Ji (Max Planck POSTECH/Hshinchu Center (MPK)) |
Expedition to the Kitaev Quantum Spin Liquid: Hunting for Majorana fermions
|
| 62 | Nov. 8 (Wed.), 1:00 PM | #5318 (E6-2. 5th fl.) | Prof. Y. Matsuda Department of Physics, Kyoto University |
“Emergent exotic quasiparticles in quantum spin liquids”
|
| 61 | Nov. 9 (Fri.), 02:30 PM | E6-2. 1st fl. #1323 | Dr. Pilkyung Moon |
Moiré superlattices – from twisted bilayer graphene to quasicrystal
|
| 60 | Nov. 9 (Fri.), 04:00 PM | E6-2. 1st fl. #1323 | Dr. Donghun Lee |
Quantum sensing and imaging with diamond defect centers for nano-scale spin physics
|
| 59 | November 1 (Thu.), 16:00 PM | #1323, E6-2 | Dr. KyeoReh Lee |
Direct holography from a single snapshot
|
| 58 | November 14 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Ji-Hun Kang |
Semi-classical model of polariton propagation
|
| 57 | November 20 (Wed.), 4:00 PM | #5302, E6-2 | Dr. Shigeyuki Ishida |
Correlation between superconducting transition temperature and critical current density in irradiated iron-based superconductors
|
| 56 | November 21 (Wed.), 15:00 PM | #1323, E6-2 | Prof. Seongshik Oh |
Engineering topological quantum physics at the atomic scale
|
| 55 | November 28 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Kyung Taec Kim |
Generation of coherent EUV emissions using ultrashort laser pulses
|
| 54 | November 29 (Thu.), 16:00 PM | #1323, E6-2 | Dr. Kee suk Hong |
양자 칸델라 실현을 위한 단일 광자 발생장치 개발
|
| 53 | November 5 (Tue.), 4:00 PM | #1323, E6-2 | Dr. Shik Shin |
Study on nanomaterials by the development of ultrahigh resolution laser-photoelectron microscopy (PEEM)
|
| 52 | November 7 (Thu.), 16:00 PM | #1323, E6-2 | Prof. Je-Hyung Kim |
Integrated quantum photonics with solid-state quantum emitters
|
| 51 | November 8 (Thu.), 16:00 PM | #1323, E6-2 | 이종완 박사 |
Conformality lost
|