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 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 1089880
241 <6/26> Hawking radiation and divergence anomalies 2008.06.26 113944
240 <8/11>Cooking up elements in the universe: Recent activities at HRIBF 2009.08.11 113845
239 <Jan.28(Thu.)>X-ray Absorption Spectroscopy Study of Amorphous Oxide Thin Films 2021.01.27 113542
238 <11/29> Kahler Inflation and WMAP7 data - a top down approach to Cosmology 2010.11.25 112199
237 <9/26(Thu.) 4:30 pm ~ > Neutrino Physics and Dark Matter search in IBS 2019.09.24 111958
236 <4/5(Wed.) 11:00am>Adhesion forces between nanoparticles in gas-phase processes and application 2017.04.03 111680
235 <1/24> Basics of Gravitational Perturbatiosn 2011.01.19 111535
234 <11/21> Cosmological viable scalar-tensor theories of gravity 2012.11.16 110058
233 <10/15> An Ideal Mean-Field Transition in a Driven Interacting System 2009.09.30 109920
232 <7/17> Atomic-scale polar oxide heterostructures: Growth and interfacial properties 2009.07.13 109895
231 <1/8>Supersymmetric states in AdS/CFT 2009.01.05 109887
230 <5/18> Baryons in AdS/QCD 2007.05.15 108621
229 <6/5> Bilinear Wess-Zumino term for open AdS superstring: covariant description of D-branes 2012.06.04 108317
228 <5/30(금)> 입자물리이론 그룹 미니 워크숍 개최 안내 2014.05.29 108258
227 <11/28> Extremal Black Holes and Holographic C-theorem 2012.11.28 107860
226 <11/28> Extremal Black Holes and Holographic C-theorem 2012.11.28 107333
225 <7/3> Complex networks and the graph structure of metabolism 2008.06.26 106980
224 <8/4> Remarks on the Scalar Graviton and Consistency of Horava Gravity 2010.07.28 106796
223 <11/9(Fri.) 11:00am>Geometrically frustrated magnetism on triangular lattice 2018.11.05 106515
222 <12/10(Tue.)> Investigating dark matter signals at neutrino telescopes 2019.12.06 106247