visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2024-08-14 11:00 
일시 Aug 14th(Wed), 11:00AM 
장소 E6, #3441 
연사 Dr. GIBAIK SIM (University of Tennessee) 
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 장소 제목
399 2018-03-16 16:00  E6-2. 1st fl. #1323  Van der Waals Heterostructures from Quantum Transport to Ultrafast Optoelectronics file
398 2018-03-16 16:00  E6-2. 1st fl. #1323  Van der Waals Heterostructures from Quantum Transport to Ultrafast Optoelectronics file
397 2019-04-19 16:00  E6-2. 1st fl. #1323  Graphene and hBN heterostructures file
396 2019-11-01 16:00  E6-2. 1st fl. #1323  Electron transport through weak-bonded contact metal with low dimensional nano-material file
395 2019-04-19 14:30  E6-2. 1st fl. #1323  A family of finite-temperature electronic phase transitions in graphene multilayers file
394 2018-12-26 16:00  E6-2. 1st fl. #1323  Brane-like defect in 3D toric code file
393 2017-06-02 14:30  E6-2. 1st fl. #1323  Quasiparticle Interference and Fourier transform scanning tunneling spectroscopy in WTe2 (Weyl semimetal) file
392 2016-04-05 16:00  E6-2. 1st fl. #1322  A new impurity solver for multi-orbital systems: adaptive truncation of the Hilbert space
391 2015-09-07 15:00  E6-2. 1st fl. #1318  Advanced Optical Materials and Devices at NRL
390 2016-09-21 16:00  E6-2. #2502(2nd fl.)  Entanglement probe of two-impurity Kondo physics
389 2016-09-29 16:00  E6-2. #2501(2nd fl.)  Exploring the phase diagram of BaBiO3: epic voyage of just another bad trip?
388 2022-12-20 16:00  E6-2. #2501  Getting into Biology and Medicine as Physicist
387 2016-11-10 16:00  E6-2. #1323(1st fl.)  Low Dimensional Active Plasmonics and Electron Optics in Graphene
386 2016-10-07 16:00  E6-2. #1323(1st fl.)  “Tilt engineering of 4d and 5d transition metal oxides?”
385 2016-05-11 16:00  E6-2. #1323(1st fl.)  The quest for novel high-temperature superconductors---Prospects and progress in iridates
384 2016-05-24 16:00  E6-2. #1323(1st fl.)  Electronic and magnetic properties of 2D transition-metal thiophosphates and tunability of magnetic order with carrier density
383 2016-11-04 13:30  E6-2. #1323(1st fl.)  Exotic phenomena at oxide LaAlO3/SrTiO3 hetero-interface and their applications
382 2016-11-04 15:00  E6-2. #1323(1st fl.)  Quantum information experiments using few electron spins in semiconductors
381 2016-10-07 13:30  E6-2. #1323(1st fl.)  “Symmetry and topology in transition metal dichalcogenide?”
380 2022-05-12 16:00  E6-2. #1323 & Zoom  New frontiers of electroweak physics at the LHC