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
130 2018-05-17 13:30    Quantum Spin Liquid in Kitaev Materials file
129 2015-10-23 10:30    How to write a good scientific paper[Open lecture series]
128 2020-12-23 10:00    Online workshop for Quantitative Phase Imaging file
127 2024-07-23 16:00    Spin Conversion Research Towards Novel Spintronic Functionalities file
126 2017-04-06 16:00    For whom the Belle tolls
125 2016-11-01 14:30    Search for dark sector particles in the B-factory experiments
124 2015-10-16 16:00    Fluctuations of entropy production in partially masked electric circuits
123 2019-07-25 16:00    Band topology of twisted bilayer graphene file
122 2019-09-18 16:00    Exploring Synthetic Quantum Matter in Superconducting Circuits file
121 2017-04-27 16:00    반도체 양자점을 이용한 단광자 광원
120 2022-04-15 11:00    (응집물리 세미나) First-principles studies of polar oxides and their applications file
119 2017-11-28 16:00    Physics after the lab and the desk: Your work in PRL file
118 2015-07-16 16:00    KAIST Physics Distinguished Lecture
117 2021-11-02 16:00    Metrology of Band Topology via Resonant Inelastic X-ray Scattering file
116 2023-01-11 11:00    Directly proving magnetoelastic coupling in a soft ferromagnet using Lorentz 4D-STEM file
115 2016-09-29 16:00    2016 Fall, Physics Seminar Serises file
114 2022-12-13 11:00    Art of thin film engineering toward topological quantum computation file
113 2023-12-19 16:00    [High Energy Theory Seminar] Non-invertible symmetries, leptons, quarks, and why multiple generations
112 2020-02-20 16:00    Unconventional superconductivity in the locally non-centrosymmetric heavy-fermion CeRh2As2 file
111 2024-01-16 14:00    Dimer Physics and Superconductivity in La3Ni2O7