logo

korean english

게시판

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 1903
공지 <12/8(Thu.) 11:00am>노벨상 소개 강연 - 2016년 노벨 물리학상: 위상 응집 물리의 탄생 2016.11.28 813332
148 <11/5> Optical spectroscopic probe on the surface state in three dimensional topological insulators 2012.10.24 62784
147 <10/24> Dung-hai Lee 교수와의 간담회 2012.10.23 62700
146 <11/22> Spin polarization of photoelectrons from a topological insulator 2012.10.22 59326
145 <10/23> Measuring Transfer Reactions with Radioactive Beams 2012.10.15 61171
144 <10/12> Kondo Effect in a Quantum-Dot-Topological-Superconductor Junction: A Numerical Renormalization Group Analysis 2012.10.08 65255
143 <10/5> Gauge fields. Past, present, future. 2012.10.05 59288
142 <10/8 (월)>물리학과 특별세미나 개최 안내 2012.10.05 75572
141 <9/20> Time-reversal anomaly in Josephson effect involving Majorana fermions 2012.09.20 67422
140 <9/14> High temperature superconductivity and fluctuating stripe 2012.09.10 61340
139 <9/7> On Dark Matter and its indirect detection with box-shaped gamma-rays 2012.09.05 61527
138 <9/7(금)> Kondo Effect in Chiral Orbital Bands 2012.08.31 60999
137 <8/7> Scotch tape and spectroscopy: probing and manipulating the surface of a topological insulator 2012.07.27 67510
136 <7월27일>Correlated topological phases in 3D complex oxides via Green's functions 2012.07.27 68951
135 <6/21> Nuclear Astrophysics in Effective Field Theories 2012.06.20 67697
134 <6/19> Kohn's theorem and non-relativistic symmetry 2012.06.15 62466
133 <6/19> 초전도 특별세미나 2012.06.11 71164
132 <6/5> Bilinear Wess-Zumino term for open AdS superstring: covariant description of D-branes 2012.06.04 62824
131 <5/22> Vortex partition function and 3d dualities 2012.05.21 62473
130 <6/5> BK 석학초청 특별강연 - How Well Does High Field Specific Heat Probe the Nodal Nature of the Multi- 2012.05.14 61597
129 <5/16> superconformal index with line operators and domain walls 2012.05.14 60730