visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-07-14 13:30 
일시 Jul. 14th (THU), 13:30 
장소 E6 #1501 & Zoom 
연사 Dr. Jahyun Koo(Institute of Natural Science, KAIST) 

7/14(목) 물리학과 문은국 교수 연구실에서 개최하는 세미나를 안내 드립니다. 

 

- Title: Electronic structure and anomalous transport properties of topological materials by first principle calculation
- Speaker: Dr. Jahyun Koo(Institute of Natural Science, KAIST)
-  Date: Jul. 14th (THU), 13:30, E6 #1501

https://us02web.zoom.us/j/87068327099?pwd=SXlyZTRkSnhEeW1GTlFjaW45SW1nUT09

회의 ID: 870 6832 7099

암호: 977538

 
Abstract: 

 

The density functional theory(DFT) is one of the most efficient ways of predicting the properties of materials. The topological materials exhibit unusual surface states and anomalous transport phenomena. In this talk, I will introduce several examples of DFT calculation, and how we connect the theoretical result to interesting experimental results. In the first part of the talk, I will introduce a calculation about the electronic structure and related properties of anomalous electrical Hall response, in the Co2MnAl. How to create or remove nodal rings and Weyl points freely in a ferromagnetic topological semimetal by rotating the magnetization direction via a weak magnetic field. Second, I will present a study about the the Kagome lattice noncollinear antiferromagnetic Mn3Ge(Sn). We find that the anomalous Lorenz ratio remains close to the Sommerfeld value at zero temperature. Widemann-Franz's law linking the magnitude of the anomalous thermal and anomalous electrical Hall effects is valid. Following the semiclassical approach, the temperature dependence of anomalous transport properties is determined by the electronic structure and Berry curvature details of the materials
 
번호 날짜 장소 제목
391 2017-09-26 11:00  #1323 (E6-2. 1st fl.)  Time-resolved ARPES study of Dirac and topological materials
390 2017-10-10 16:00  E6-2 #1323  Discovery of New 2D Materials with Diverse Physical Properties
389 2017-11-03 14:30  #1323 (1st fl., E6-2.)  Quantum Resistor-Capacitor Circuit with Majorana Edge States file
388 2017-11-03 16:00  #1323 (1st fl., E6-2.)  Expedition to the Kitaev Quantum Spin Liquid: Hunting for Majorana fermions file
387 2017-11-08 13:00  #5318 (E6-2. 5th fl.)  “Emergent exotic quasiparticles in quantum spin liquids” file
386 2017-11-28 16:00  #1323 (E6-2. 1st fl.)  Physics after the lab and the desk: Your work in PRL file
385 2017-12-13 13:30  자연과학동 대형강의실 (1501호)  KAIST-KIAS Joint Workshop in Theoretical Sciences 개최 file
384 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
383 2017-12-15 09:20  E6-2, Lecture Room #1323  Workshop on Magnetism in Unconventional Superconductors 개최 file
382 2018-02-12 15:00  #C303, (Creation Hall 3F, KAIST Munji Campus)  The recent result of XMASS Experiment
381 2018-03-16 14:30  E6-2. 1st fl. #1323  산화물 다층박막에서의 다양한 물리현상 file
380 2018-03-16 16:00  E6-2. 1st fl. #1323  Van der Waals Heterostructures from Quantum Transport to Ultrafast Optoelectronics file
379 2018-04-06 10:00  #2502, E6  Entanglement and thermalization in many-body systems: recent progress file
378 2018-04-09 11:00  E6-2. 1st fl. #1323  Doublon-holon origin of the subpeaks at the Hubbard band edges file
377 2018-04-11 13:30  #1323 (E6-2, 1st fl.)  Probing 3D Structure and Physical Properties of Materials at the Single-Atom Level file
376 2018-04-11 16:00  #1323 (E6-2, 1st fl.)  Non-Gaussian states of multimode light generated via hybrid quantum information processing file
375 2018-04-13 10:00  #1323 (E6-2, 1st fl.)  Quantum meets Mechanics: from Quantum Information to Fundamental Research file
374 2018-05-09 16:00  #1323, E6-2  Recent advances in thermoelectric bulk composites file
373 2018-05-11 14:30  E6-2. 1st fl. #1323  Disordered Floquet topological insulators file
372 2018-05-11 16:00  E6-2. 1st fl. #1323  암페어 단위 재정의와 단전자 펌프 소자 개발 file