- Hiroshi Yasuoka: Extended NMR/NQR Studies on Heavy Electron Systems Toward a deeper understanding of the superconductivity
- 10. 9. 2014, 14:00
- lecture room F2, first floor Ke Karlovu 5
- more information
Abstract:
There have been accumulated a large amounts of experimental and theoretical investigations on heavy fermion systems. Yet, we do not have, I should say, a conclusive picture for the unconventional characters of the system, like the magnetism, the superconductivity and the quantum criticality, etc. This may be originated from our luck of microscopic understanding how the system goes in to the so-called coherent state and how those state condensed to either magnetic long range ordered or superconducting state with lowering temperature. Nuclear Magnetic Resonance (NMR) and Nuclear Quadruple Resonance (NQR) have been playing an important role, as one of the most unique microscopic tool, to explore the static and dynamical properties of condensed matters. Actually, NMR/NQR technique has been applied variety of heavy electron compounds which show exotic and unconventional magnetism and superconductivity.
In this talk, we will demonstrate an extended NMR/NQR experiment perfumed at LANL in the last year, focusing on the mechanism of the superconductivity. The story includes the local environmental effects in substituted CeCoIn5, the superconductivity in Pu-115's, and the spin-triplet superconductivity in U2PtC2.
I hope that you may learn how the NMR/NQR technique is powerful though my talk and that it motivate the NMR research to young generations.