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)
334 2019-12-13 13:30    Biophysics Mini-symposium at KAIST file
333 2019-12-18 16:00    Road to Higher Tc Superconductivity file
332 2019-12-27 15:00    The superconducting order parameter puzzle of Sr2RuO4 file
331 2019-12-27 15:00    The superconducting order parameter puzzle of Sr2RuO4 file
330 2020-01-17 16:00    Symmetry Breaking and Topology in Superfluid 3He file
329 2020-02-12 13:00    From inflation to new weak-scale file
328 2020-02-13 16:30    Enhanced Light-Matter Interactions in Graphene with Noble Metal Plasmonic Structures file
327 2020-02-20 16:00    Unconventional superconductivity in the locally non-centrosymmetric heavy-fermion CeRh2As2 file
326 2020-07-02 16:00    An irreversible qubit-photon coupling for the detection of itinerant microwave photons file
325 2020-08-17 20:00    Using magnetic tunnel junctions to compute like the brain file
324 2020-08-25 20:00    KAIST Global Forum for Spin and Beyond (Second Forum) file
323 2020-09-11 14:00    SRC Seminar file
322 2020-09-14 17:30    KAIST Global Forum for Spin and Beyond (Third Forum) file
321 2020-09-22 09:30    Physics and applications of soliton microcombs(Quantum- & Nano-Photonics) file
320 2020-09-24 09:00    (CAPP/IBS)Searching for Dark Matter with a Superconducting Qubit , Cryogenic Microwave Circuit Development at the NSTU file
319 2020-09-28 17:30    KAIST Global Forum for Spin and Beyond(Fourth Forum) file
318 2020-10-09 09:00    Quantum Many-Body Simulation file
317 2020-10-15 16:00    Graphene-based Josephson junction microwave bolometer file
316 2020-10-15 16:00    Towards resource-efficient and fault-tolerant quantum computation with nonclassical light
315 2020-10-15 17:00    Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe file