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seminar Date  
Date & Time Mar. 2nd (Thu), 4:00 p.m 
Venue #1323(E6-2. 1st fl.) 
Speaker 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 seminar Date Venue 제목
공지     Spring 2019: Physics Seminar Serises
공지     Spring 2019: Physics Colloquium
공지   Seminar Room #1323  Fall 2017: Physics Seminar Serises
공지   Seminar Room 1501  Fall 2017: Physics Colloquium
100     Spring 2017: Physics Colloquium file
99   Seminar Room 1323  Spring 2017: Physics Seminar Serises file
»   #1323(E6-2. 1st fl.)  “Progress in the comparison of ARPES to DMFT for d and f strongly correlated electron systems”
97   #1323(E6-2. 1st fl.)  Quantum electron optics using flying electrons
96   Lecture Hall, College of Natural Sciences [#1501,E6-2]  Topological Defects and Phase Transitions
95   1:30p.m. #1323(E6-2. 1st fl.)  “Possible symmetry in the phase diagrams of electron- & hole-doped cuprate high-Tc superconductors”
94   #1323(E6-2. 1st fl.)  Entanglement area law in strongly-correlated systems
93   #1323(E6-2. 1st fl.  Shift Charge and Spin Photocurrents in Dirac Surface States of Topological Insulator
92   #1323(E6-2. 1st fl.)  Dynamical Resonance between Two Optical Cavities via Optomechanical Oscillator
91   #1323(E6-2. 1st fl.)  Symmetry Protected Kondo Metals and Their Phase Transitions
90   #1323(E6-2. 1st fl.)  Harmonic oscillator physics with single atoms in a state-selective optical potential
89   #5318(5th fl.)  Non-equilibrium many-body spin dynamics in diamond
88   #1323(E6-2. 1st fl.)  Realizing Haldane Model in Fe-based Honeycomb Ferromagnetic Insulators
87   E6-2. #1323(1st fl.)  Low Dimensional Active Plasmonics and Electron Optics in Graphene
86   #1323(E6-2. 1st fl.)  Dirac fermions in condensed matters
85   #1323(E6-2. 1st fl.)  Bandgap Engineering of Black Phosphorus
84   E6-2. #1323(1st fl.)  Quantum information experiments using few electron spins in semiconductors
83   E6-2. #1323(1st fl.)  Exotic phenomena at oxide LaAlO3/SrTiO3 hetero-interface and their applications
82   #1323(E6-2 1st fl.)  Time scale dependent dynamics in InAs/InP quantum dot gain media