visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2017-03-02 16:00 
연사  
장소 #1323(E6-2. 1st fl.) 

“Progress in the comparison of ARPES to DMFT for d and f strongly correlated electron systems”

 

 Dr. Jonathan Denlinger, Lawrence Berkeley National Lab

 Mar. 2nd (Thu), 4:00 p.m , #1323(E6-2. 1st fl.)

 

The comparison of angle-resolved photoemission (ARPES) to dynamical mean field theory (DMFT) electronic structure calculations is reviewed for three correlated electron systems of V2O3, CeCoIn5 and SmB6. The electronic structure of metallic phase V2O3, key to understanding its various metal-insulator transitions with temperature, doping and pressure, is revealed by ARPES to have a d-orbital band filling that is inconsistent with a 2007 DMFT model of correlation-enhanced orbital polarization, but is thematically consistent with more recent DMFT calculations stressing full charge-self-consistency.

   The Kondo lattice system CeCoIn5 is shown to exhibit itinerant f-electron participation in the localized-like 3D Fermi surface topology consistent with the low energy scale description of DMFT calculations, and with a temperature-dependence that extends far above the transport coherence temperature of T*~45K. 

   Finally, the temperature-dependent evolution of the bulk 4f electronic structure of mixed-valent SmB6 revealed by ARPES and DMFT identifies an important role in f-p hybridization assistance to the metal-insulator transition (MIT) beyond the minimal two-band models of f-d hybridization.  The current status of the topological insulator scenario for the SmB6 in-gap surface states is also reviewed.

 

Contact: Yeong Kwan Kim (Tel. 2516, yeongkwan@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 2012-04-02 16:00    A new route to ferroelectricity in magnetic spinels: a case of Co2MnO4
504 2024-11-18 10:30    Manipulation of antiferromagnetic magnon polarization in synthetic antiferromagnets
503 2020-12-10 13:55    Consistency of Boltzmann equation and light dark matter from inflaton decay
502 2016-09-05 16:00    Physics Colloquium : 2016 Fall file
501 2024-07-03 16:00    [High Energy Theory Seminar] Holographic duals of Higgsed Dpb(BCD)
500 2021-01-28 15:00    Topological Transport of Deconfined Hedgehogs in Magnets file
499 2018-12-26 16:00    Informal Workshop on Topology and Correlation file
498 2021-06-22 17:00    Spintronics meets Quantum Materials file
497 2024-12-06 16:00  Vladimir Y. Chernyak  Bright Squeezed Light (BSL) Spectroscopy with Interferometry from First Principles
496 2021-06-08 10:00    Photonic crystal devices for sensing file
495 2023-06-30 11:00    The Dual Mode Quantum Computer file
494 2023-11-29 10:00    [High Energy Theory Seminar] Averaged null energy and the renormalization group
493 2020-09-14 17:30    KAIST Global Forum for Spin and Beyond (Third Forum) file
492 2024-11-13 12:00    [11/13(수) 물리학과 세미나 안내] Separability as a window to mixed-state quantum phases and phase transitions / Tarun Grover (UC San Diego, Associate Professor)
491 2022-11-03 13:00    [High-Energy Theory Seminar] Supersymmetric observables via Fermi-gas method
490 2024-10-31 13:00    Mini-workshop on first-principles DFT methods and applications
489 2019-07-08 14:00    Ultrabroadband squeezed pulses and their relation to relativity file
488 2023-04-05 16:00    [High Energy Theory Seminar]Anomalies of Discrete 1-Form Symmetries in QCD-like Theories
487 2024-03-27 16:00    [High Energy Theory Seminar] The Callan Rubakov Effect
486 2023-02-20 17:00    (Optics Seminar) Neural Holography for Next generation Virtual and Augmented Reality Displays file