visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나

Dimer Physics and Superconductivity in La3Ni2O7

2024.01.09 15:35

admin 조회 수:158

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
264 2016-09-02 14:30  E6-2(1st fl.), #1323  Nanoscale Thermal Physics: Seebeck Effect and Nanoscale Friction
263 2023-11-23 16:00  E6-2(Natural Science B/D). 1st fl. #1323  Deciphering the Enigma of Quantum Materials by X-ray Scattering and Spectroscopy
262 2023-11-16 16:00  E6-2(Natural Science B/D). 1st fl. #1323  Electric-field control of emergent phenomena in correlated oxide thin films
261 2023-11-09 16:00  E6-2(Natural Science B/D). 1st fl. #1323  Assessing the Capability of Near-Term Photonic Devices Towards Quantum Supremacy
260 2023-09-18 11:00  E6-2, #1322  Magic polarisation trapping of polar molecules for tunable dipolar interactions file
259 2023-03-02 11:00  E6-2, #1322  Probing Anomalies of Non-Invertible Symmetries with Symmetry TFTs
258 2023-08-23 16:00  E6-2, #1322  [High Energy Theory Seminar] A spacetime tensor network for AdS3/CFT2
257 2023-11-30 10:30  E6-2, #1322  [High-Energy Theory Seminar] 3d-3d correspondence and 2d N = (0,2) boundary conditions
256 2019-06-28 14:00  E6-2, #1322  1st Research-exchange meeting of computational material physics file
» 2024-01-16 14:00  E6-2, #1323  Dimer Physics and Superconductivity in La3Ni2O7
254 2024-01-03 11:00  E6-2, #1323  Interplay of Strong Correlations, Topology, and Disorder in 2D Quantum Matters
253 2022-09-15 13:00  E6-2, #1323  AdS black holes: a review
252 2023-06-08 16:00  E6-2, #1323  Thermal decoupling in high-Tc cuprate superconductors
251 2023-07-18 11:00  E6-2, #1323  Non-Hermitian Casimir Effect of Magnons
250 2023-07-12 11:00  E6-2, #1323  Study of spin-1/2 antiferromagnetic kagome Heisenberg model by symmetric projected entangled simplex states
249 2023-12-19 16:00  E6-2, #1323  [High Energy Theory Seminar] Non-invertible symmetries, leptons, quarks, and why multiple generations
248 2023-07-19 16:00  E6-2, #1323  [High-Energy Theory Seminar]Deriving the Simplest Gauge-String Duality
247 2023-07-11 11:00  E6-2, #1323  Ordered phases, non-Fermi liquid, and quantum criticality driven by entanglement between multipoles and conduction electrons
246 2015-11-28 10:00  E6-2, #1323  Electron Tunneling Spectroscopy of Single and Bilayer Graphene with Hexagonal Boron Nitride as Tunneling Barrier
245 2015-11-19 16:00  E6-2, #1323  Emergent Collective Phenomena and Functions at Reduced Dimensions