visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2017-11-08 13:00 
연사  
장소 #5318 (E6-2. 5th fl.) 

Emergent exotic quasiparticles in quantum spin liquids

 

Prof. Y. Matsuda

Department of Physics, Kyoto University

 

Nov. 8 (Wed.), 1:00 PM

#5318 (E6-2. 5th fl.)

 

 

Quantum spin liquid (QSL) is an exotic quantum phase of matter whose ground state is quantum-mechanically entangled without any magnetic ordering. A central, yet poorly understood issue concerns the excitations that characterize QSLs, which are hypothetically associated with the quasiparticle fractionalization and topological order. It is widely believed that in dimensions more than one, geometrical frustrations are required to realize QSL states. Here I discuss emergent exotic quasiparticles of three types of QSL states in frustrated quantum magnets mainly by thermal transport measurements. 

 

1) Spinon excitations in organic Mott insulator EtMe3Sb[Pd(dmit)2]2 and 1T-TaS2 with triangular lattice.

2) Magnetic monopole (M-particle), electric monopole (E-particle), and photon (n-particle) excitations in rare earth pyrochlore oxides, Yb2Ti2O7 and  Pr2Zr2O7, both of which host spin-ice correlations with strong quantum fluctuations. 

3) Majorana fermion excitations and the half integer thermal Hall effect in a Kitaev QSL state on honeycomb lattice of a-RuCl3

 

 

Contact: Eun Gook Moon, Physics Dept., (egmoon@kaist.ac.kr)

 

20171108_Prof.Yuji Matsuda.pdf

번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
344 2018-03-16 16:00    Van der Waals Heterostructures from Quantum Transport to Ultrafast Optoelectronics file
343 2015-11-06 16:30    Topological Dirac line nodes in centrosymmetric semimetals
342 2019-04-19 14:30    A family of finite-temperature electronic phase transitions in graphene multilayers file
341 2019-11-01 14:30    Squeezing the best out of 2D materials file
340 2017-09-26 11:00    Time-resolved ARPES study of Dirac and topological materials
339 2016-04-08 13:30    Theoretical Overview of Iron-based superconductors and its future
338 2019-06-28 13:30    Magnetic domains and domain wall conduction in pyrochlore iridate thin films and heterostructures file
337 2016-10-27 16:00    Terahertz Metal Optics
336 2016-11-18 10:30    Non-equilibrium many-body spin dynamics in diamond
335 2022-09-15 13:00    AdS black holes: a review
334 2022-05-18 16:00    Geometry, Algebra, and Quantum Field Theory
333 2022-05-19 16:00    Chasing Long Standing Neutrino Anomalies with MicroBooNE
332 2022-05-12 16:00    New frontiers of electroweak physics at the LHC
331 2024-01-16 16:00    [High Energy Theory Seminar] Towards quantum black hole microstates
330 2024-10-21 13:00    [Physics Seminar] “Non-Hermitian Point-Gap Topology in Junction Systems” file
329 2024-10-14 11:00    [RSVP, Oct 14th Mon] Ambassador of Hungary to Republic of Korea Special Lecture file
328 2019-12-27 15:00    The superconducting order parameter puzzle of Sr2RuO4 file
327 2019-12-27 15:00    The superconducting order parameter puzzle of Sr2RuO4 file
326 2019-09-26 16:00    Entanglement Swapping with Autonomous Polarization-Entangled Photon-Pairs from Warm Atomic Ensemble file
325 2023-11-30 10:30    [High-Energy Theory Seminar] 3d-3d correspondence and 2d N = (0,2) boundary conditions