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)
505 2022-01-26 13:00    An Introduction to Cohomology groups file
504 2018-10-12 16:00    Direct observation of a two-dimensional hole gas at oxide interfaces file
503 2022-11-18 14:30    Kondo cloud condensation in a highly-doped semiconductor metal file
502 2025-05-01 16:00  Dr. Inwook Kim (Lawrence Livermore National Laboratory)  BSM Physics Search with Quantum Sensors file
501 2018-12-26 16:00    Brane-like defect in 3D toric code file
500 2019-07-31 16:00    Features of ballistic superconducting graphene file
499 2018-07-12 17:00    The MilliQan Experiment: Search for Milli-Charged Particles at the LHC
498 2016-12-09 13:30    Entanglement area law in strongly-correlated systems
497 2023-11-23 16:00    Deciphering the Enigma of Quantum Materials by X-ray Scattering and Spectroscopy
496 2019-10-16 16:00    Emergent black holes and monopoles from quantum fields file
495 2022-07-14 13:30    Electronic structure and anomalous transport properties of topological materials by first principle calculation
494 2016-11-24 16:00    Harmonic oscillator physics with single atoms in a state-selective optical potential
493 2015-09-07 15:00    Advanced Optical Materials and Devices at NRL
492 2021-05-14 16:00    Spatial and temporal separation of environmental dephasing sources from solid-state quantum emitters file
491 2016-04-12 16:00    Confinement of Superconducting Vortices in Magnetic Force Microscopy
490 2017-04-28 14:30    Hot electron generation at surfaces and its impact to catalysis and renewable energy conversion
489 2015-12-11 15:45    Dynamical mean field theory studies on heavy fermion system
488 2023-10-19 11:00    Emergent functionalities of iridium oxide films with different growth orientation file
487 2023-06-26 11:00    Quantum computing on magnetic racetracks with flying domain wall qubits
486 2019-04-19 11:00    First-principles studies of semiconductors for solar cell applications file