logo

korean english

게시판

Home > 게시판 > 세미나

일시: 715(금) 오후 2시~3시 

장소: SAINT 회의실(제2종합연구동, 83221)

○ 연사: 이  준  현 박사님 (Havard Univ.)

Title: Electronic quasiparticles in the quantum dimer model

○ Abstract: 

We study a recently proposed quantum dimer model for the pseudogap metal state of the cuprates. The model contains bosonic dimers, representing a spin-singlet valence bond between a pair of electrons, and fermionic dimers, representing a quasiparticle with spin-1/2 and charge +e. By density matrix renormalization group calculations on a long but finite cylinder, we obtain the ground state density distribution of the fermionic dimers for a number of different total densities. From the Friedel oscillations at open boundaries, we deduce that the Fermi surface consists of small hole pockets near (π/2, π/2), and this feature persists up to doping density 1/16. We also compute the entanglement entropy and find that it closely matches the sum of the entanglement entropies of a critical boson and a low density of free fermions. Our results support the existence of a fractionalized Fermi liquid (FL*) in this model. 


Reference - arXiv:1606.04105






번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1078339
525 <6/25(화)>물리학과 특별세미나 개최 안내 2013.06.24 149369
524 <7/25(목) 오전11시> 물리학과 특별세미나 개최 안내 2013.07.19 129126
523 <8/20> Radioprotection effect and anti-tumor immunity by TCM-EF in mice 2013.08.21 176589
522 <8/21(수)> 고온 초전도 특별세미나 2013.08.21 77369
521 <10/28> Magneto-electric response of multiferroic chiral magnets 2013.10.21 74943
520 <11/4 오전 10:30> Quantum transport through topological-metal strip 2013.10.23 88204
519 <11/4 오후 3:30> Surface impurity induced self energy in bulk on a topological insulator 2013.10.23 91677
518 <11/5(화)> 특별세미나 개최 안내 2013.11.01 229969
517 <11/11> Revealing magnetism of nanoislands with quantitative insights into spin-polarized scanning tunneling spectroscopy 2013.11.05 98376
516 <12/30> Dirac vs. Weyl in topological insulators: Adler-Bell-Jackiw anomaly in transport phenomena 2013.12.16 123808
515 <12/26> Emergent Physics in 3D Correlated Topological Semimetals file 2013.12.20 141327
514 <12/30> Correlation between Raman scattering and conductance in a molecular junction 2013.12.23 70910
513 <1/2> MYRRHA Project (EU 4세대 원전 사업) 2013.12.30 63214
512 <3/28> A global financial settlement network and its cascading effects 2014.03.26 60846
511 <4/18(금)> 양자물질초전도체창의연구소 초청 세미나 2014.04.15 178318
510 <4/21(월) 오후 2시> Optical properties of iron-based conductors and superconductors 2014.04.15 76288
509 <5/12(월)> Nanoscale probing of electrochemical phenomena and ionic dynamics by scanning probe microscopy 2014.05.07 97956
508 콜로퀴움 게시판입니다. 2011.02.28 79801
507 콜로퀴움입니다. 2005.12.29 78265
506 콜로퀴움 강연 일정표 2006.02.21 88786