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 1079434
15 <8/20> Radioprotection effect and anti-tumor immunity by TCM-EF in mice 2013.08.21 178674
14 <Feb.18(Thu.)> Hund's metallicity in the vicinity of a Van Hove singularity / Correlated topological phases in strongly correlated heterostructures 2021.02.16 179709
» <4/18(금)> 양자물질초전도체창의연구소 초청 세미나 2014.04.15 180620
12 <12/20(Thu) 2:00pm> Gravitating Spinning Stars (a particle theorist's perspective) 2018.12.17 184085
11 <11/21> Cosmological viable scalar-tensor theories of gravity 2012.11.16 199119
10 <9/20> Time-reversal anomaly in Josephson effect involving Majorana fermions 2012.09.20 205374
9 <5/16(토)> 세미나 개최 안내 2015.05.18 217507
8 <11/5(화)> 특별세미나 개최 안내 2013.11.01 230355
7 <Jan.14(Thu.)>Oxygen sponge effects for epitaxial manganite thin film design 2021.01.11 236579
6 <8/30(Wed.)10:30>​Technology convergence and applications of Large-Area Electronics, e-Textiles, bio-sensors and bio-electronics 2017.08.29 244734
5 <12/21> Special Seminar by Professor Ilya Vekhter 2010.11.30 244910
4 <6/17> Oscillating Fuzzy Sphere and M5/anti M5 configurations in ABJM model 2009.06.16 247913
3 BK 석학초청 특별세미나 - Frustration and dimensional reduction in multi-orbital systems 2011.10.28 253118
2 <10/25> Wave properties of dipole-exchange spin waves in confined magnetic thin films 2006.10.25 296890
1 <12/3> Magnetic couplings, optical spectra, and spin-orbit exciton in 5d Mott insulator Sr2IrO4 2012.11.26 405424