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
263 2022-09-22 16:00  E6-2 #1323  (광학분야 세미나) Quasi-particle-like optical vortices in magnetic materials
262 2023-05-12 11:00  E6-2 #1323  (응집물리 세미나)Interlayer conductivity and plasmon in weakly coupled layered systems
261 2023-01-12 14:40  E6-2 #1323  JILA 1D Wannier-Stark optical lattice clock file
260 2023-03-30 16:00  E6-2 #1323  (광학분야 세미나)Scalable quantum entanglement in trapped-ions based quantum computer
259 2023-04-27 16:00  E6-2 #1323  (광학분야 세미나)On-chip spectrometers based on CMOS image sensors
258 2023-01-11 11:00  E6-2 #1323  Directly proving magnetoelastic coupling in a soft ferromagnet using Lorentz 4D-STEM file
257 2023-04-14 12:00  E6-2 #1323  (응집물리 세미나)Exotic quantum phenomena in two-dimensional materials file
256 2024-01-24 15:00  E6-2 #1323  Determination of single molecule loading rate during mechanotransduction file
255 2023-03-17 11:00  E6-2 #1323  (응집물리 세미나)Operando electron microscopy investigation of domain dynamics in twisted van der Waals materials file
254 2022-11-11 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Honeycomb oxide heterostructures for quantum spin liquid file
253 2023-05-18 16:00  E6-2 #1323  (광학분야 세미나)Dielectric metasurfaces for optimized optical system and spatial light modulators
252 2022-10-27 16:00  E6-2 #1323  (광학분야 세미나) Cavity optomechanical systems for quantum transduction
251 2023-05-19 11:00  E6-2 #1323  (응집물리 세미나)Dipole condensations in Tilted Bose-Hubbard Chains
250 2022-10-07 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Competing orders in a vanadium-based kagome metal monolayer file
249 2022-09-23 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Steady Floquet-Andreev states in graphene Josephson junctions file
248 2023-05-26 11:00  E6-2 #1323  (응집물리 세미나)Spectral Analyses of Stochastic Charge Trapping in Oxide Heterostructures file
247 2023-09-07 12:00  E6-2 #1323  2023 가을학기 광학분야 및 응집물리 특별세미나 전체 일정 file
246 2022-12-07 16:00  E6-2 #1323  (광학분야 세미나) Non-Hermitian physics and non-Hermitian singularity
245 2022-10-13 16:00  E6-2 #1323  (광학분야 세미나) Ultrafast Optics for Ultra-Precision Metrology and Realization of Flexible/Stretchable Laser-Induced-Graphene Electronics
244 2022-06-03 11:00  E6-2 #1323  (응집물리 세미나) Theoretical Investigation of Exotic Quantum States in Low-dimensional Materials