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 2022학년도 1학기 콜로퀴움 일정 2022.01.10 26923
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 968026
560 <4/6> Observation of Reactor Electron Antineutrino Disappearance in the RENO Experiment 2012.04.04 70054
559 <4/23> BK 석학초청 특별강연 - Connections between Stellar Evolution and Nuclear Physics 2012.04.16 73267
558 <4/18> Action-angle variables for the near-horizon extreme black hole particle dynamics 2012.04.17 87095
557 <4/24> How to introduce the monopole in quantum mechanics? 2012.04.23 65751
556 <5/1> Supersymmetry Breaking in Chern-Simons-matter Theories 2012.04.30 67555
555 <5/3> APOLLO Program: Understanding Neutron-Rich Nuclei for r-Process Nucleosynthesis 2012.05.03 76100
554 <5/8> A brief introduction to holographic entanglement entropy 2012.05.07 67505
553 <5/9> Gravity dual of (Non-)Fermi Liquids from Entanglement Entropy 2012.05.07 68977
552 <5/16> superconformal index with line operators and domain walls 2012.05.14 70932
551 <6/5> BK 석학초청 특별강연 - How Well Does High Field Specific Heat Probe the Nodal Nature of the Multi- 2012.05.14 76245
550 <5/22> Vortex partition function and 3d dualities 2012.05.21 65701
549 <6/5> Bilinear Wess-Zumino term for open AdS superstring: covariant description of D-branes 2012.06.04 71940
548 <6/19> 초전도 특별세미나 2012.06.11 80069
547 <6/19> Kohn's theorem and non-relativistic symmetry 2012.06.15 71152
546 <6/21> Nuclear Astrophysics in Effective Field Theories 2012.06.20 75093
545 <7월27일>Correlated topological phases in 3D complex oxides via Green's functions 2012.07.27 75476
544 <8/7> Scotch tape and spectroscopy: probing and manipulating the surface of a topological insulator 2012.07.27 77253
543 <9/7(금)> Kondo Effect in Chiral Orbital Bands 2012.08.31 64534
542 <9/7> On Dark Matter and its indirect detection with box-shaped gamma-rays 2012.09.05 67035
541 <9/14> High temperature superconductivity and fluctuating stripe 2012.09.10 74545