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 1090967
296 2018학년도 1학기 콜로퀴움 일정 2018.01.03 111224
295 <Dec.13(Wed.) 4:30 PM>기본에 충실하고 새로움에 도전한다 - 자율주행자동차의 핵심 기술들 – 2017.12.07 59980
294 <Dec.6(Wed.) 4:30 PM> 실험핵천체물리학: 과거와 미래(Experimental Nuclear Astrophysics: Past and Future) 2017.11.29 45989
293 <Nov.29(Wed.) 4:30 PM> The Intensity Frontier Experiment & SHiP 2017.11.22 46858
292 <Nov.22(Wed.) 4:30 PM> Dark Side of the Universe 2017.11.15 71688
291 <Nov.15(Wed.) 4:30 PM> Mixed metal oxide films for energy and memory device applications 2017.11.08 65786
290 <Nov. 8(Wed.) 4:30 PM> 연성물질 기반 위상학적 결함구조의 상전이와 응 2017.11.01 121921
289 <Nov. 1(Wed.) 4:30 PM> 광자와 이온트랩을 이용한 양자 정보처리 2017.10.25 46802
288 <Oct. 18(Wed.) 4:30 PM> AlGaN/GaN HEMT 센서플랫폼 (KANCSensGaNTM) 기술 소개 file 2017.10.11 54977
287 <Oct. 11(Wed.) 4:30 PM> Graphene Membrane for Imaging Molecular Assembly and Dynamics 2017.09.27 51524
286 <Sep. 27(Wed.) 4:30 PM> Triboelectric and Piezoelectric Nanogenerators for Self-Powered Electronics 2017.09.20 80799
285 <Sep. 20(Wed.) 4:30 PM> 양자이론에 대한 `서울해석` 시도하기 2017.09.13 48142
284 <Sep. 13(Wed.) 4:30 PM> 우주론 100년, 어디로 가고 있는가? 2017.09.06 48917
283 <Sep. 6(Wed.) 4:30 PM> Particles in the Universe 2017.09.01 47472
282 2017학년도 2학기 콜로퀴움 일정 2017.07.04 109153
281 <June 14(Wed.) 4:30 PM> Stellar core collapse: success or failure, and future probes 2017.06.08 73056
280 <June 7(Wed.) 4:30 PM> 물리학으로 보는 인간과 사회 2017.05.31 51877
279 <May 31(Wed.) 4:30 PM>중력파, 새로운 천문학과 물리학의 시작 2017.05.24 52328
278 <May 24(Wed.) 4:30 PM>누구나 과학을 통찰하는 법 2017.05.17 52769
277 <May 17(Wed.) 4:30 PM>Printed Electronics 2017.05.10 123910