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장소 Jul. 10th (Mon), 4pm 
일시 #1323(E6-2. 1st fl.) 
연사 Dr. Duk Young Kim Los Alamos National Laboratory 

“Intertwined Orders in a Heavy-fermion metal”

 

Dr. Duk Young Kim

Los Alamos National Laboratory

 

Jul. 10th (Mon), 4pm

#1323(E6-2. 1st fl.)

 

The role of magnetic fluctuations is a major interest in recent studies on unconventional superconductivity. The heavy-fermion metal CeCoIn5 provides an interesting platform to study the relationship between magnetism and superconductivity. In the low-temperature and high-field corner of its H-T phase diagram, CeCoIn5 shows a spin-density-wave (SDW) magnetic order coexisting with the superconductivity. This antiferromagnetic order has single domain and switches its orientation very sharply depending on the direction of the magnetic field. This hypersensitivity of the magnetic domain induces a discontinuous change of the thermal conductivity when the magnetic field is rotated in the basal plane of the tetragonal crystal. This measurement reveals the presence of a p-wave Cooper-pair-density-wave (PDW) order that is intimately intertwined with the superconducting d-wave and magnetic SDW orders. The concept of intertwined orders is a new framework to understand high-Tc and iron-based superconductors. CeCoIn5 provides an important example of intertwined orders and establish its superconducting state as potentially a new state of matter.

 

[1]        D. Y. Kim, S.-z. Lin, F. Weickert, M. Kenzelmann, E. D. Bauer, F. Ronning, J. D. Thompson, and R. Movshovich, Physical Review X 6, 041059 (2016).

 

Contact: Prof. Eunseong Kim (T.2547)

20170710_김덕영.pdf

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290 2019. 7. 16(화)  Rm. 1323 (E6-2)  Prof. Sidney Nagel  2019 Physics Distinguished Lecture file
289 8/19 (Mon), 10:00~11:30, 8/22 (Thur), 10:00~11:30  Rm. 1322, E6-2  Nicolas Treps  Tutorials on Multimode Quantum Optics in the Continuous Variable Regime file
288 3 PM, 12 Jun (Wed), 2019  Rm# 1323, E6-2  Dr. Minyoung You  The relation between free and interacting fermionic SPT phases file
287 Apr. 2 (Fri.), 02:30 PM  Online(Zoom)  Dr. Tae Hyun Kim (SNU)  Quantum computing and entanglement generation using trapped ions and photons
286 Apr. 2 (Fri.), 04:00 PM  Online(Zoom)  Dr. Heejun Yang (KAIST)  Van der Waals heterostructures for orbital gating-based phototransistors and electronic spectroscopy
285 Nov 17th 12:00 PM  Online(Zoom)  Prof. Qiang Lin (Univ. of Rochester, USA)  Quantum- & Nano-Photonics" 세미나 시리즈 file
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282 Jan.28(Thu), 06:00PM  Online Seminar  Alexandre Zagoskin(Loughborough Univ.)  Quantum metamaterials: concept, theory, prototypes and possible applications file
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278 Nov. 20 (Fri.), 02:30 PM  Online  Dr. Doohee Cho  Lumpy Cooper pairs in an iron-based superconductor
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