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
458 2023-04-28 11:00  E6 #1323  Tkachenko wave: From the modern field theory viewpoint
457 2023-04-27 16:00  E6-2 #1323  (광학분야 세미나)On-chip spectrometers based on CMOS image sensors
456 2023-04-27 11:00  E6-2 #1322  Inverse Shapiro steps and coherent quantum phase slip in superconducting nanowires
455 2023-04-14 12:00  E6-2 #1323  (응집물리 세미나)Exotic quantum phenomena in two-dimensional materials file
454 2023-04-13 11:00  Zoom  [High Energy Theory Seminar]Noninvertible Gauss Law and Axions
453 2023-04-06 16:00  E6-2 #1323  (광학분야 세미나)Nanophotonics-based approaches to explore Berry physics
452 2023-04-05 16:00  E6-2, #2502  [High Energy Theory Seminar]Anomalies of Discrete 1-Form Symmetries in QCD-like Theories
451 2023-04-04 16:00  Room 2501, KAIST Natural Sciences Lecture Hall(E6)  Chiral Magnetism: A Geometric Perspective
450 2023-03-30 16:00  CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus  Detecting axions with chiral magnetic effects file
449 2023-03-30 16:00  E6-2 #1323  (광학분야 세미나)Scalable quantum entanglement in trapped-ions based quantum computer
448 2023-03-27 15:00  CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus  A coherent mechanical oscillator pumped by a suspended quantum dot file
447 2023-03-24 11:00  E6-2 #1323  (응집물리 세미나)Floquet simulators of topological surface states in isolation
446 2023-03-22 16:00  E6-2, #2502  (High Energy Theory Seminar) Boltzmann or Bogoliubov? A Case of Gravitational Particle Production
445 2023-03-17 11:00  E6-2 #1323  (응집물리 세미나)Operando electron microscopy investigation of domain dynamics in twisted van der Waals materials file
444 2023-03-16 16:00  E6-2 #1323  2023 봄학기 광학분야 및 응집물리 특별세미나 전체 일정 file
443 2023-03-16 16:00  E6-2 #1323  (광학분야 세미나) Investigation of 3D cell mechanics using refractive-index tomography
442 2023-03-02 11:00  E6-2, #1322  Probing Anomalies of Non-Invertible Symmetries with Symmetry TFTs
441 2023-02-28 11:00  E6 Room(#1322)  Topotactic redox engineering toward novel material file
440 2023-02-27 12:00  E6-1 #1501  2023 봄학기 콜로키움 전체 일정 file
439 2023-02-20 17:00  KI building (E4), Lecture Room Red (B501)  (Optics Seminar) Neural Holography for Next generation Virtual and Augmented Reality Displays file