logo

korean english

게시판

Home > 게시판 > 세미나

양자물질초전도체창의연구소에서 아래와 같이 초청 세미나를 개최하오니 많이 참석해 주시기 바랍니다.

 

아 래

   

제목: Kondo screening near the Mott transition and the signatures of Nozieres’ exhaustion

 

연사: 이  현  정 박사님 (KIAS)

 

일시: 2014. 4. 18(금) 오전 11:00  

 

장소: 삼성학술정보관 7층 Creative learning room

 

초록: How can a few electrons screen many magnetic impurities, the so called “exhaustion problem” is an interesting issue which is supposed to control the physics of heavy fermions in rare earths compounds. It also enters indirectly in the issue of Mott metal insulator transitions, where few charge carriers in a narrow Kondo resonance are acting to screen a large number of localized spins filled in a broad Hubbard band.
In order to explore the exhaustion problem in doped Mott insulators, we investigate the Mott transition of the doped Hubbard model within the dynamical mean-field approach, where the numerical renormalization-group method is used as an impurity-solver. Approaching the critical point from the metallic side, we find characteristic signatures of the Nozieres’ exhaustion, including a strongly reduced lattice Kondo scale and a significant suppression of the density of states beside the resonance peak. The fact that similar features are also observed in the low-energy scale of the periodic Anderson model suggests that the physics of Kondo lattices can shed light on the Mott metal-insulator transition.


 

번호 제목 날짜 조회 수
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1059593
622 <5/2>방사선을 이용한 무통/무혈 수술 2008.04.28 136237
621 <11/11>Leptogenesis in triplet seesaw models 2006.11.08 135431
620 <April 7(Wed.)> Mid-scale facilities for condensed matter research: high magnetic field and neutron scattering 2021.03.31 134159
619 2016학년도 1학기 콜로퀴움 일정 2016.02.03 133129
618 <9/26> Organic Polymers as Nuclear Radiation Sensors 2012.09.20 132400
617 <4/6> Knowledge is power: Maxwell's demon in the quantum wonderland 2011.03.31 130853
616 <12/26> Emergent Physics in 3D Correlated Topological Semimetals file 2013.12.20 130825
615 <11/6> Scaling laws between facility and population densities 2009.11.04 129197
614 <April. 6(Wed.) 4:30 PM> Quantitative Determination of High Tc Superconductivity Mechanism 2016.03.31 129151
613 <5/30> DNA 나노기술(DNA Nanotechnology) 2008.05.26 128150
612 2021학년도 2학기 콜로퀴움 일정 2021.07.01 127369
611 <Oct. 20(Tue.) 2:00 PM> High-throughput Synthesis of Oxide Thin Films 2015.10.05 127300
610 <5/3> High-Speed MOSFET Technology: State-of-the-Art Strain Engineering 2006.05.02 126915
609 2019학년도 1학기 콜로퀴움 일정 2019.01.08 125545
608 <12/3> Characteristic of risk asset in financial market. 2010.11.29 124915
607 <Oct.16(Wed.)> 솟구치는 초고에너지 입자의 미스테리 2019.10.10 123592
606 <3/27>Social Experience, Brain, and Behavior 2009.03.23 123095
605 <12/21(금)> Theory of topological quantum phase transitions in 3D noncentrosymmetric systems 2012.12.05 122683
604 <5/29> Nanomaterials Work at NASA-Johnson Space Center 2009.05.25 122066
603 <Nov.13(Fri) 16:00> Kondo screening in mixed valence and heavy fermion compounds and the signatures of Nozieres’ exhaustion 2015.11.04 121861