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 2022학년도 1학기 콜로퀴움 일정 2022.01.10 28278
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 975472
499 <Mar. 22(Wed.) 4:30 PM>Symmetry and topology in the electronic structure of solids 2017.03.15 53042
498 <Mar. 15(Wed.) 4:30 PM>반도체 Fab Process와 물리학 전공자 2017.03.14 52130
497 2017학년도 1학기 콜로퀴움 일정 2017.01.05 233009
496 <Dec. 14(Wed.) 4:30 PM>중력과 양자 얽힘 (tentative) 2016.12.07 51970
495 <12/2(Fri.) 14:00>Overview of HIMAC facility 2016.12.01 51756
494 <Dec. 7(Wed.) 4:30 PM>Mechanotransduction of cells in vitro(세포기능의 역학적 조절) 2016.11.30 69108
493 <Nov. 30(Wed.) 4:30 PM> Chiral solitons for topological informatics 2016.11.23 74327
492 <Nov. 23(Wed.) 4:30 PM> Dry (Plasma) etch process in Semiconductor Device 2016.11.16 58099
491 <Nov. 16(Wed.) 4:30 PM> Two-dimensional Chiral Materials and Topological Insulators 2016.11.10 55737
490 <Nov. 9(Wed.) 4:30 PM> 20-nm resolution imaging of brain circuitry by next-generation expansion microscopy 2016.11.02 51843
489 <Nov. 2(Wed.) 4:30 PM> 현대 우주론 이론과 관찰 (Theories and observations of modern cosmology) 2016.10.19 52437
488 <10/25(Tue.) 11:00am>Crystallization of Water under Modulating Pressures 2016.10.14 55623
487 <Oct. 19(Wed.) 10:00 AM> Hyper-Kamiokande project -The future of neutrino physics in Japan 2016.10.12 56263
486 <10/11(Tue.) 15:00>Analysis of Individual Terrestrial Gamma-ray Flashes 2016.10.10 61611
485 <10/25(Tue.) 11:00am>Crystallization of Water under Modulating Pressures 2016.10.10 54998
484 <10/12(Wed.) 11:00am>Unconventional Superconductivity: From History to Mystery 2016.10.10 75290
483 <Oct. 12(Wed.) 4:30 PM> Silk as a biocompatible optical material 2016.10.05 60853
482 <10/13(Thu.) 13:00>기술융합을 통한 의료혁명과 물리학의 역할 2016.09.29 53329
481 <Oct. 5(Wed.) 4:30 PM> 국제원자력기구 (IAEA)와 핵데이터 2016.09.22 56740