• HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-03-25 11:00 
일시 Mar. 25(Fri.) 11:00 
장소 E6-1 #1323 
연사 Prof. Ara Go (Department of Physics, Chonnam National University) 
1. Date / Time 
  - March 25, 2022 
  - 11:00 AM (KST)
2. Place / ZOOM 
    - Room 1323, KAIST Natural Sciences Lecture Hall(E6) (자연과학동 1323호)
3. Speaker
    - Prof. Ara Go (Department of Physics, Chonnam National University)
4. Talk Title
    - Hund's metallicity in ruthenate systems
5. Abstract
   -   Strong Coulomb interaction in transition metal compounds arises many emergent phenomena. The rotationally invariant local Coulomb interaction can be expressed as a combination of two terms, Hubbard interaction U and Hund's coupling J. The strong Hubbard interaction is well known to stabilize Mott insulating phase. On the other hand, in the specific region of the phase diagram, Hund's coupling drives a characteristic correlated metallic behavior--Hund's metal. 
    Ruthenate systems show typical Hund's metallic behavior. We investigate the interplay between van Hove singularity and Hund's coupling in the ruthenate systems. We perform systematic dynamical mean-field calculations for various parameters targeting the systems and specify the experimentally relevant region. By analyzing the atomic multiplet population, we identify the distinct nature of a strontium ruthenate 113 film and 214 bulk system.\
0221_카이스트 물리학과(응집물리)포스터-최종.jpg
번호 날짜 장소 제목
221 2021-03-25 16:00  Online Seminar (Zoom)  Search for dark matter axion with Rydberg atoms file
220 2021-04-02 14:30  Online(Zoom)  Quantum computing and entanglement generation using trapped ions and photons
219 2021-04-02 16:00  Online(Zoom)  Van der Waals heterostructures for orbital gating-based phototransistors and electronic spectroscopy
218 2021-04-09 10:00  Zoom webinar  Integrated Lithium Niobate Photonics file
217 2021-04-19 19:00  Zoom webinar  Evidence of Electrical Switching in Antiferromagnets and Coherent Spin Pumping file
216 2021-05-14 14:30  Online seminar  Electrically tunable spin valve effect in vertical van-der-Waals magnetic tunnel junctions file
215 2021-05-14 16:00  Online seminar  Spatial and temporal separation of environmental dephasing sources from solid-state quantum emitters file
214 2021-05-17 17:00  Zoom webinar  Spin current generation and detection in uniaxial antiferromagnets file
213 2021-05-27 16:00  온라인  찾아가는 물리연구 현장(유럽 입자물리학연구소 소개) file
212 2021-06-08 10:00  Zoom webinar  Photonic crystal devices for sensing file
211 2021-06-11 14:30  Online seminar  Engineering sound waves and vibrations in multi-mode nanomechanical systems file
210 2021-06-11 16:00  Online seminar  Pseudogap in surface-doped black phosphorus file
209 2021-06-22 17:00  Zoom webinar  Spintronics meets Quantum Materials file
208 2021-07-29 14:00  Online seminar  Gravitationally Induced Dark Sector and Inflationary Dynamics file
207 2021-11-02 16:00  자연과학동(E6-2) #1323  Metrology of Band Topology via Resonant Inelastic X-ray Scattering file
206 2021-12-03 14:30  Zoom webinar  Topological Spin Textures: Skyrmions and Beyond file
205 2021-12-03 16:00  Zoom webinar  Nonequilibrium Heat Transport in Elemental Metals Probed by an Ultrathin Magnetic Thermometer file
204 2022-01-11 15:00  E6 #1501  Ultrafast optical studies on CDW collective modes of the Weyl-CDW (TaSe4)2I file
203 2022-01-12 11:00  Zoom and E6 #1323  Spectroscopic study of trapped ions towards probing dark matter and new physics file
202 2022-01-17 14:00  E6-2 Room 2502  Five Lectures on Observational Probes of Dark Energy file