korean english


Home > 게시판 > 세미나

양자물질초전도연구실에서 스위스 PSI에 재직하는 Kenzelmann 교수님을 초청하여 아래와 같이 세미나를 개최합니다.

학과 구성원 여러분의 많은 참석을 부탁드립니다.

○ 일시: 2018년 3월 2일(금) 오전 11:00

○ 장소: 7th floor in Samsung Library

○ 연사: Prof. Michel Kenzelmann from Paul Scherrer Institut (Swiss)

○ Title: Evolving magnetic interactions near a Kondo breakdown

○ Abstract: Exchange interactions in heavy-fermion materials can trigger complex magnetic phases that
arise from localized or itinerant electrons. It is an open question how magnetic order is
affected when the Fermi surface topology is altered upon hybridization of local electronic
states with the conduction band. Here we study the evolution of magnetic order in the series
Nd1−xCexCoIn5 that features a Kondo breakdown within an antiferromagnetic phase. We
find a transition between two distinct magnetic phases that is detached from the emergence
of heavy-bands. This demonstrates that the magnetism and the Kondo coupling are governed by
different energy scales, in complete agreement with theory that predicts two separate
critical points. Close to the magnetic critical point, however, we find that the magnetic
structure changes symmetry. Our results demonstrate that the magnetic interactions change with
increasing electronic itineracy, and that theories need to include magnetic interactions that
evolve with the size of the Fermi surface.

번호 제목 날짜 조회 수
공지 2020학년도 2학기 콜로퀴움 일정 2020.07.16 15290
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 548561
625 2019학년도 2학기 콜로퀴움 일정 2019.07.17 381951
624 2020학년도 1학기 콜로퀴움 일정 2020.01.31 214331
623 <5/16(토)> 세미나 개최 안내 2015.05.18 116156
622 2017학년도 1학기 콜로퀴움 일정 2017.01.05 112468
621 2016학년도 1학기 콜로퀴움 일정 2016.02.03 110030
620 2019학년도 1학기 콜로퀴움 일정 2019.01.08 97979
619 2018학년도 2학기 콜로퀴움 일정 2018.07.03 91940
618 2018학년도 1학기 콜로퀴움 일정 2018.01.03 85324
617 <4/2> Radio Detection of Ultra High Energy Cosmic Rays and Neutrinos in Antarctica 2014.03.26 82370
616 2014학년도 2학기 콜로퀴움 일정 2014.09.11 81229
615 2017학년도 2학기 콜로퀴움 일정 2017.07.04 79888
614 <5/1>In vivo optical imaging of hemodynamic changes 2009.05.06 74373
613 <6/2> The black hole search at the LHC: critical comment 2011.06.01 73890
612 <9/1> 원자핵 자기공명(Nuclear Magnetic Resonance) 해설 - 원자선에서 영상까지 2010.08.30 73211
611 <10/28>Grazing Incidence X-ray Diffraction and Surface X-ray Scattering Study of Hematite (α-Fe2O3) Nano-cube 2011.10.26 72592
610 BK 석학초청 특별세미나 - Frustration and dimensional reduction in multi-orbital systems 2011.10.28 72037
609 <9/15> Resistance Switching Behavior of Epitaxially Grown NiO Thin Films 2009.09.07 72036
608 <4/19> Nuclear Reaction Theories 2011.04.14 71928
607 2016학년도 2학기 콜로퀴움 일정 2016.08.02 70842