“Spin collective phenomena in the superconducting phase of Sr2RuO4”

Dr. Suk Bum Chung
Department of Physics, University of Seoul

Apr. 13 (Fri.), 02:30 PM
E6-2. 1st fl. #1323

Abstract:
The spin-triplet superconductor by definition should involve spin ordering. I will show how this will give rise to the spin collective phenomena such as the spin collective modes and the spin supercurrent in the superconducting phase in the best-known candidate material, Sr2RuO4. The heterostructure of Sr2RuO4 and the ferromagnetic SrRuO3 provides a particularly natural probe for detecting both types of spin collective phenomena. The spin supercurrent that can be injected naturally into Sr2RuO4 from SrRuO3 can be used to obtain an exceptionally high-quality spin valve, while applying an AC bias on SrRuO3 can drive the Sr2RuO4 spin collective modes.

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