visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2017-03-02 16:00 
일시 Mar. 2nd (Thu), 4:00 p.m 
장소 #1323(E6-2. 1st fl.) 
연사 Dr. Jonathan Denlinger, Lawrence Berkeley National Lab 

“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 장소 제목
366 2023-05-12 11:00  E6-2 #1323  (응집물리 세미나)Interlayer conductivity and plasmon in weakly coupled layered systems
365 2022-05-11 16:00  E6-2. #1323 & Zoom  Gravity as a phenomenon in quantum dynamics
364 2018-05-11 16:00  E6-2. 1st fl. #1323  암페어 단위 재정의와 단전자 펌프 소자 개발 file
363 2018-05-11 14:30  E6-2. 1st fl. #1323  Disordered Floquet topological insulators file
362 2018-05-09 16:00  #1323, E6-2  Recent advances in thermoelectric bulk composites file
361 2019-05-09 16:00  #1323, E6-2  Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
360 2019-05-09 16:00  #1323, E6-2  Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
359 2019-05-08 16:00  E6 Room(#1323)  Imaging valley dependent electron transport in 2D semiconductors file
358 2023-05-31 16:00  E6-2, #2502  [High-Energy Theory Seminar] Resurgence and complex Chern-Simons theory
357 2018-05-31 16:00  #1323, E6-2  Dynamic control of optical properties with gated-graphene metamaterials file
356 2016-05-31 16:00  #1323(E6-2, 1st fl.)  Understanding 3D tokamak physics towards advanced control of toroidal plasma
355 2019-05-31 11:00  #1323, E6-2  Cavity QED with Spin Qubits file
354 2019-05-30 16:00  #1323, E6-2  Tuning the excitonic properties of semiconductors with light-matter interactions file
353 2023-05-03 16:00  E6-2, #2502  Probing microscopic origins of axions by the chiral magnetic effect
352 2018-05-29 16:00  #1323, E6-2  Investigation on metal nanostructure/semiconductor junction and its applications file
351 2022-05-27 11:00  Online seminar  Current Status and Future Plans of ADMX file
350 2016-05-24 16:00  E6-2. #1323(1st fl.)  Electronic and magnetic properties of 2D transition-metal thiophosphates and tunability of magnetic order with carrier density
349 2019-05-24 16:00  #1323, E6-2  Infrared spectroscopy study on metal-insulator transitions in layered perovskite iridates file
348 2023-05-22 13:00  E6-6 119  Design & Development of Electrochemical Biosensors for the Detection of T2DM Biomarkers
347 2019-05-21 16:00  #5318, E6-2  Classification of flat bands according to the band-crossing singularity of Bloch wave functions file