visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Dimer Physics and Superconductivity in La3Ni2O7

2024.01.09 15:35

admin 조회 수:403

날짜 2024-01-16 14:00 
일시 Jan.16th (Tue.),14:00 
장소 E6-2, #1323 
연사 Siheon Ryee (University of Hamburg, Germany) 

Nickelated 초전도체에 관한 세미나를 개최하오니, 관심 있는 분들의 많은 참석 바랍니다. 

 

- Date & Time: Jan. 16th (Tue.), 2024 / 14:00 ~ 16:00

PlaceE6-2 (Rm. 1323)

Title : Dimer Physics and Superconductivity in La3Ni2O7

- Lecturer : Siheon Ryee [University of Hamburg, Germany]

Abstract: 

The recent discovery of superconductivity with Tc ~ 80 K in the bilayer nickelate La3Ni2O7 under high pressure heralds a new class of high-Tc superconductors. The most notable feature of this material is a strong interlayer electronic coupling unlike many unconventional superconductors. In this respect, central questions concern “How does the interlayer coupling affect the low-energy physics?" and “Is the interlayer coupling a friend or foe of superconductivity?". In this talk, I will demonstrate using a cluster dynamical mean-field theory that nonlocal self-energy driven by the interlayer coupling in La3Ni2Oinduces a Lifshitz transition of Fermi surface topology. By solving a relevant gap equation, I will further argue that superconductivity is promoted by this “dimer” electronic correlationThe underlying mechanism is the quenching of a strong ferromagnetic channel resulting from the Fermi surface change. This finding unveils the role of interlayer coupling in La3Ni2O7 and potentially paves the way to designing higher-Tc nickelates.

 
번호 날짜 장소 제목
543 2016-04-26 16:00  #1323(1st Floor. E6-2)  Transport spectroscopy for electronic bands in carbon-based nanomaterials with weak-bond contacts
542 2016-11-1 10:30  #1323(E6-2 1st fl.)  Time scale dependent dynamics in InAs/InP quantum dot gain media
541 2016-06-01 16:00  #1323(E6-2 1st fl.)  Laboratory experiments relevant to mesospheric clouds, Saturn’s rings & astrophysical jets
540 2016-10-27 16:00  #1323(E6-2)  Terahertz Metal Optics
539 2016-05-19 16:00  #1323(E6-2, 1st fl.)  Nonlinear/quantum optical effect in silicon nano-photonics
538 2016-06-16 16:00  #1323(E6-2, 1st fl.)  Quantum information processing using quantum dots and photonic crystal cavities
537 2016-09-22 15:30  #1323(E6-2, 1st fl.)  Polarized 3He, Polarized Neutrons and New Interactions beyond the Standard Model
536 2016-05-31 16:00  #1323(E6-2, 1st fl.)  Understanding 3D tokamak physics towards advanced control of toroidal plasma
535 2016-09-22 15:30  #1323(E6-2, 1st fl.)  Polarized 3He, Polarized Neutrons and New Interactions beyond the Standard Model
534 2016-05-16 16:00  #1323(E6-2, 1st Fl.)  Tuning microwave cavities with biased nonlinear dielectrics for axion searches
533 2016-12-09 16:00  #1323(E6-2. 1st fl.  Shift Charge and Spin Photocurrents in Dirac Surface States of Topological Insulator
532 2016-04-19 14:00  #1323(E6-2. 1st fl.)  Nonlocal collisional electron transport in partially ionized plasma generation, structure, and stability
531 2016-12-8 16:00  #1323(E6-2. 1st fl.)  Dynamical Resonance between Two Optical Cavities via Optomechanical Oscillator
530 2017-03-02 16:00  #1323(E6-2. 1st fl.)  “Progress in the comparison of ARPES to DMFT for d and f strongly correlated electron systems”
529 2016-07-28 16:00  #1323(E6-2. 1st fl.)  Low Dimensional Electrons: On the Road to Hybrid Quantum Systems
528 2016-11-24 16:00  #1323(E6-2. 1st fl.)  Harmonic oscillator physics with single atoms in a state-selective optical potential
527 2016-11-29 16:00  #1323(E6-2. 1st fl.)  Symmetry Protected Kondo Metals and Their Phase Transitions
526 2016-07-08 14:00  #1323(E6-2. 1st fl.)  Electronic quasiparticles in the quantum dimer model
525 2016-12-09 13:30  #1323(E6-2. 1st fl.)  Entanglement area law in strongly-correlated systems
524 2016-11-11 16:00  #1323(E6-2. 1st fl.)  Dirac fermions in condensed matters