visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2024-08-14 11:00 
연사  
장소 E6, #3441 
물리학과 구성원분들께, 
 
아래와 같이 세미나를 개최하고자 하오니, 관심있는 분들의 많은 참석 부탁드립니다.
 
Date: 11:00 am, 14th Aug (Wed)
Place: E6, #3441
Speaker: Dr. GIBAIK SIM (University of Tennessee)
Title: Pair Density Waves and Supercurrent Diode Effect in Altermagnets
 
Abstract: 
Metallic altermagnets are unusual collinear magnets that feature zero net magnetization with momentum-dependent spin splitting [1,2]. In our recent work [3], we show that this spin splitting can induce pair density wave states even in the absence of external magnetic fields.
Focusing on BCS-type attractive interactions, we find the stabilization of symmetrically distinct pair density wave states depending on the chemical potential. These states include Fulde-Ferrell and Fulde-Ferrell* states, both of which break inversion symmetry [4]. We investigate the supercurrent properties and discover non-reciprocal supercurrents for both states with distinct spatial dependencies. We propose that the supercurrent diode effect [5] can serve as an experimental tool for distinguishing between different pair density waves in metallic altermagnets and discuss the relation to material candidates.
 
[1] Šmejkal, Libor, Jairo Sinova, and Tomas Jungwirth. Physical Review X 12.4 (2022): 040501.
[2] Šmejkal, Libor, Jairo Sinova, and Tomas Jungwirth. Physical Review X 12.3 (2022): 031042.
[3] Sim, GiBaik, and Johannes Knolle. arXiv preprint arXiv:2407.01513 (2024).
[4] Agterberg, Daniel F., et al. Annual Review of Condensed Matter Physics 11.1 (2020): 231-270.
[5] Nadeem, Muhammad, Michael S. Fuhrer, and Xiaolin Wang. Nature Reviews Physics 5.10 (2023): 558-577.
 
번호 날짜 연사 제목
190 2020-10-15 17:00    Time crystals, quasicrystals, and time crystal dynamics in the superfluid universe file
189 2022-03-31 10:00    Weiss fields for Quantum Spin Dynamics file
188 2022-03-29 10:00    Non-reciprocal phase transitions file
187 2024-05-16 14:30    [Astrophysics Seminar] Observational Cosmology with Superconducting Sensors
186 2024-05-30 10:00    Quasiperiodic Effects in Quasicrystals
185 2018-11-09 14:30    Moiré superlattices – from twisted bilayer graphene to quasicrystal file
184 2015-10-16 15:00    High Magnetic Fields to Probe the sub-eV range of Particle/Astroparticle Physics - From the OSQAR experiments at CERN up to new perspectives at LNCMI-Grenoble
183 2018-07-02 15:00    High Precision Magnetic Field Measurement for the Muon g-2 Experiment file
182 2016-06-01 10:30    Welcome to Nature Photonics
181 2018-05-11 16:00    암페어 단위 재정의와 단전자 펌프 소자 개발 file
180 2016-04-26 16:00    Transport spectroscopy for electronic bands in carbon-based nanomaterials with weak-bond contacts
179 2022-08-12 10:00    Twisted Bilayer Magnets file
178 2022-08-12 10:00    Twisted Bilayer Magnets file
177 2022-10-06 13:00    Counting States with Global Symmetry
176 2019-06-12 15:00    The relation between free and interacting fermionic SPT phases file
175 2016-09-29 16:00    Exploring the phase diagram of BaBiO3: epic voyage of just another bad trip?
174 2017-04-28 16:00    Carbon nanotubes coupled to superconducting impedance matching circuits
173 2023-07-11 11:00    Ordered phases, non-Fermi liquid, and quantum criticality driven by entanglement between multipoles and conduction electrons
172 2019-07-30 16:00    Dirac fermions and flat bands in correlated kagome metals file
171 2017-11-03 14:30    Quantum Resistor-Capacitor Circuit with Majorana Edge States file