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)
226 2017-11-03 16:00    Expedition to the Kitaev Quantum Spin Liquid: Hunting for Majorana fermions file
225 2016-11-29 16:00    Symmetry Protected Kondo Metals and Their Phase Transitions
224 2022-10-26 10:00    Replica Higher-Order Topology of Hofstadter Butterflies in Twisted Bilayer Graphene
223 2016-10-07 13:30    “Symmetry and topology in transition metal dichalcogenide?”
222 2022-11-24 16:00    Probing fundamental physics by mapping the mm and sub-mm sky
221 2023-09-18 16:00    [CAPP Seminar] Searching for axions in quantum vacuum birefringence file
220 2019-04-26 16:00    Robust Quantum Metrology using Strongly Interacting Spin Ensembles and Quantum Convolutional Neural Network file
219 2021-12-03 14:30    Topological Spin Textures: Skyrmions and Beyond file
218 2019-11-05 16:00    Study on nanomaterials by the development of ultrahigh resolution laser-photoelectron microscopy (PEEM) file
217 2019-11-20 16:00    Correlation between superconducting transition temperature and critical current density in irradiated iron-based superconductors file
216 2020-02-13 16:30    Enhanced Light-Matter Interactions in Graphene with Noble Metal Plasmonic Structures file
215 2022-06-10 14:30    Combinatorial strategy for condensed matter physics: study on rare earth hexaborides thin films file
214 2019-10-31 10:00    Kondo meets Hubbard: Impurity physics for correlated lattices file
213 2018-04-09 11:00    Doublon-holon origin of the subpeaks at the Hubbard band edges file
212 2019-10-29 16:00    Particles and Gravity via String Geometry file
211 2018-06-01 11:00    Topological phases in low-dimensional quantum materials file
210 2019-03-29 14:30    Epitaxial Multifunctional Oxide Thin Films for Novel Electronics file
209 2016-01-26 14:00    Electrochemistry on Nano- and Atomic Levels: Scanning Probe Microscopy Meets Deep Data
208 2023-10-11 16:00    [High Energy Theory Seminar] Axion Magnetic Resonance
207 2023-09-21 16:00    [CAPP seminar] Axion Magnetic Resonance file