visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-10-28 11:00 
연사  
장소 E6-2 #1323 
세미나 영상은 아래 링크로 확인 바랍니다. (공개기한: 2023.10.27까지)
 
o 일시: 2022. 10. 28(금)  11:00
o 장소: E6-2 Room 1323
o Zoom Link: https://kaist.zoom.us/j/83127228653  회의 ID:  831 2722 8653
 
o 연사: 김수란 교수(경북대학교 물리교육과)
o 강연주제: Machine-Learning-Guided Prediction Models and Materials discovery for high Tc Cuprates
Abstract
Cuprates have been at the center of long debate regarding their superconducting mechanism; therefore, predicting the critical temperatures of cuprates remains elusive. We demonstrate herein, using ab initio computations, a new trend suggesting that the cuprates with stronger out-of-CuO2-plane chemical bonding between the apical anion (O, Cl) and apical cation (e.g., La, Hg, Bi, Tl) are generally correlated with higher Tc;max in experiments. Also, using machine learning, we predict the maximum superconducting transition temperature (Tc,max) of hole-doped cuprates and suggest the functional form for Tc,max with the root-mean-square-error of 3.705 K and R2 of 0.969. We have found that the Bader charge of apical oxygen, the bond strength between apical atoms, and the number of superconducting layers are essential to estimate Tc,max. Furthermore, we predict the Tc,max of hypothetical cuprates generated by replacing apical cations with other elements. Among the hypothetical structures, the cuprates with Ga show the highest predicted Tc,max values, which are 71, 117, and 131 K for one, two, and three CuO2 layers, respectively. These findings suggest that machine learning could guide the design of new high-Tc superconductors in the future.
Attached: C.V
 
Inquiry: Prof. Se Kwon Kim(sekwonkim@kaist.ac.kr) / Prof. Hee Jun Yang (h.yang@kaist.ac.kr)
번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
294 2021-03-25 16:00    Search for dark matter axion with Rydberg atoms file
293 2021-04-02 14:30    Quantum computing and entanglement generation using trapped ions and photons
292 2021-04-02 16:00    Van der Waals heterostructures for orbital gating-based phototransistors and electronic spectroscopy
291 2021-04-09 10:00    Integrated Lithium Niobate Photonics file
290 2021-04-19 19:00    Evidence of Electrical Switching in Antiferromagnets and Coherent Spin Pumping file
289 2021-05-14 14:30    Electrically tunable spin valve effect in vertical van-der-Waals magnetic tunnel junctions file
288 2021-05-14 16:00    Spatial and temporal separation of environmental dephasing sources from solid-state quantum emitters file
287 2021-05-17 17:00    Spin current generation and detection in uniaxial antiferromagnets file
286 2021-05-27 16:00    찾아가는 물리연구 현장(유럽 입자물리학연구소 소개) file
285 2021-06-08 10:00    Photonic crystal devices for sensing file
284 2021-06-11 14:30    Engineering sound waves and vibrations in multi-mode nanomechanical systems file
283 2021-06-11 16:00    Pseudogap in surface-doped black phosphorus file
282 2021-06-22 17:00    Spintronics meets Quantum Materials file
281 2021-07-29 14:00    Gravitationally Induced Dark Sector and Inflationary Dynamics file
280 2021-11-02 16:00    Metrology of Band Topology via Resonant Inelastic X-ray Scattering file
279 2021-12-03 14:30    Topological Spin Textures: Skyrmions and Beyond file
278 2021-12-03 16:00    Nonequilibrium Heat Transport in Elemental Metals Probed by an Ultrathin Magnetic Thermometer file
277 2022-01-11 15:00    Ultrafast optical studies on CDW collective modes of the Weyl-CDW (TaSe4)2I file
276 2022-01-12 11:00    Spectroscopic study of trapped ions towards probing dark matter and new physics file
275 2022-01-17 14:00    Five Lectures on Observational Probes of Dark Energy file