korean english


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 1078850
235 <3/16(Fri.)11:00> Superlattice phonons of two dimensional heterostructures 2018.03.16 84347
234 <3/2(Fri.)11:00>Evolving magnetic interactions near a Kondo breakdown 2018.02.27 69823
233 <8/30(Wed.)10:30>​Technology convergence and applications of Large-Area Electronics, e-Textiles, bio-sensors and bio-electronics 2017.08.29 243826
232 <8/21(Mon.)10:30>Non-Gaussianity as a Particle Detector 2017.08.17 66346
231 <7/24(Mon.)11:00>Antenna Arrays for Astroparticle Physics: Radio Detection of High-Energy Cosmic Rays 2017.07.19 114261
230 <7/20(Thu.)14:00>Engineering and probing topological properties of Dirac semimetal films by asymmetric charge transfer 2017.07.18 120359
229 <4/5(Wed.) 18:00pm> 저에너지 가속기의 활용 2017.04.05 49600
228 <4/5(Wed.) 11:00am>Adhesion forces between nanoparticles in gas-phase processes and application 2017.04.03 105692
227 <12/2(Fri.) 14:00>Overview of HIMAC facility 2016.12.01 55515
226 <10/25(Tue.) 11:00am>Crystallization of Water under Modulating Pressures 2016.10.14 62624
225 <10/11(Tue.) 15:00>Analysis of Individual Terrestrial Gamma-ray Flashes 2016.10.10 71731
224 <10/25(Tue.) 11:00am>Crystallization of Water under Modulating Pressures 2016.10.10 62750
223 <10/12(Wed.) 11:00am>Unconventional Superconductivity: From History to Mystery 2016.10.10 87673
222 <10/13(Thu.) 13:00>기술융합을 통한 의료혁명과 물리학의 역할 2016.09.29 77736
221 <9/22(Thu.) 10:30> Bulk-boundary correspondence from the inter-cellular Zak phase 2016.08.29 72975
220 <8/5(Fri.) 10:30> Phase Slips in Superfluid Spin Transport in Magnetic Wires 2016.08.02 56928
219 <7/18(Mon.) 14:00> GEANT4 Particle Physics Simulation Software: A Brief Overview From a User’s Perspective 2016.07.15 66682
218 <7/15(Fri.) 11:00> Observation of a field induced quantum spin liquid in α-RuCl3 2016.07.14 65451
» <7/15(Fri.) 14:00> Electronic quasiparticles in the quantum dimer model 2016.07.12 70150