korean english


Home > 게시판 > 세미나

아래와 같이 콜로퀴움을 개최하오니 많이 참석해 주시기 바랍니다. .

4시 20분부터 제1과학관 31214 e+강의실에서 간단한 다과를 제공합니다.

아 래

Title: Majorana quasiparticles emergent in Kitaev quantum magnets

Speaker:         교수님 (중앙대학교)

Date & Time: April. 5. (Wed.) 2017, 4:30 PM

Place: Natural Science 1,  Room No. 31214

Abstract: Quantum spin liquids are a long-range quantum entangled state that entails topological order and fractionalization of constituent magnetic moments. Their physical realization holds promise for the implementation of decoherence-free quantum computer and provides a unified conceptual framework that underpins dark matter in universe, composite fermions in quantum Hall liquids, magnetic monopoles in spin ices, and spinons in frustrated magnets. The Kitaev honeycomb lattice is envisioned as an ideal host for Majorana quasiparticles that are created out of the spin liquid vacuum. In this talk, we will present experimental signatures of Majorana fermions emergent in Kitaev materials: the 2D honeycomb lattice α-RuCl3 and the harmonic-honeycomb iridates β- and γ-Li2IrO3. In α-RuCl3 extensive thermodynamic and spectroscopic measurements unveil two distinct characters of fractionalized excitations as a result of thermal fractionalization of s=1/2 spins. In the hyperhoneycomb iridates, polarization-resolved Raman spectroscopy shows a thermal damping of fermionic excitations, expanding the concept of fractionalized quasiparticles to a 3D Kitaev-Heisenberg spin system.

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1089204
376 <9/17>Computational studies of materials and nanostructures 2010.09.08 81741
375 <11/19(수)> 3D topological insulators with magnetic impurities 2014.11.13 81873
374 <8/1(Wed.) 4:00pm>Band Topology in Nodal Line Semimetals with Z2 Monopole Charges 2018.07.23 81940
373 콜로퀴움입니다. 2005.12.29 81960
372 <5/9> Gravity dual of (Non-)Fermi Liquids from Entanglement Entropy 2012.05.07 81974
371 <11/9> 자기저항 현상과 스핀트로닉스, 그리고 금속성 산화물 자성체 2007.11.05 82347
370 <Nov. 30(Wed.) 4:30 PM> Chiral solitons for topological informatics 2016.11.23 82538
369 Square lattice S=1/2 Heisenberg spin systems: Vanadium oxides and phosphates 2006.01.12 82568
368 <5/8> A brief introduction to holographic entanglement entropy 2012.05.07 82728
367 <11/3> Special Seminar - "2011 Nobel Physics: The beginning and the end of the universe" 2011.10.27 82749
366 <9/7> Magnets and Science at the NHMFL 2011.09.06 82792
365 <1/22>Vortices, Q-balls, domain walls on dielectric M2 brane 2009.01.19 82927
364 <11/3>고온 초전도와 MgB2 초전도체-미래전망 2006.11.03 82944
363 <10/29> 분자 나노자성체에 대한 소개 2010.10.15 83093
362 2006학년도 2학기 콜로퀴움 일정 2006.10.23 83108
361 <9/13> Multiferroic properties of BiFeO3 single crystal and 1D-Chain system 2007.09.04 83130
360 <11/2>반도체성 나노구조 2007.11.01 83146
359 <10/30> Nambu and the Standard Model 2009.10.27 83148
358 <6/10> 초전도 분야 특별세미나 개최 file 2011.06.01 83180
357 <9/20> Time-reversal anomaly in Josephson effect involving Majorana fermions 2012.09.20 83257