“Intertwined Orders in a Heavy-fermion metal”
2017.07.06 11:29
날짜 | 2017-07-10 16:00 |
---|---|
일시 | #1323(E6-2. 1st fl.) |
장소 | Jul. 10th (Mon), 4pm |
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)
댓글 0
번호 | 날짜 | 장소 | 제목 |
---|---|---|---|
9 | 2020-09-28 17:30 | Zoom webinar | KAIST Global Forum for Spin and Beyond(Fourth Forum) |
8 | 2015-12-09 11:00 | E4(KI Building), Connect room (2nd fl.) | Functional Imaging & Monitoring of Brain & Breast with Diffuse Light |
7 | 2015-12-09 14:00 | E6-2, #1323 | SWELLABLE COLLOIDAL PARTICLES ARE SWELL |
6 | 2023-09-18 11:00 | E6-2, #1322 | Magic polarisation trapping of polar molecules for tunable dipolar interactions |
5 | 2021-01-28 18:00 | Online Seminar | Quantum metamaterials: concept, theory, prototypes and possible applications |
4 | 2020-09-24 09:00 | Zoom Video | (CAPP/IBS)Searching for Dark Matter with a Superconducting Qubit , Cryogenic Microwave Circuit Development at the NSTU |
3 | 2024-01-26 15:00 | E6-2 #1323 | In-situ 4D-STEM studies on surface reconstruction and polarization switching of perovskite oxides |
2 | 2019-09-18 16:00 | Seminar Room #1323 | Fall 2019: Physics Seminar Serises |
1 | 2019-09-02 16:00 | Seminar Room 1501 | Fall 2019: Physics Colloquium |