»ã±¨±êÌâ (Title)£ºMore is different: the beauty of multiband in iron-based superconductors£¨¶àÕßÒìÒ²£ºÌú»ù³¬µ¼ÌåÖеĶà´øÖ®ÃÀ£©

»ã±¨ÈË (Speaker)£º ¶¡ºé Ժʿ

»ã±¨¹¦·ò (Time)£º2025Äê4ÔÂ24ÈÕ(ÖÜËÄ) 14:00-16:00

»ã±¨µØÖ· (Place)£ºÐ£±¾²¿G601

Ô¼ÇëÈË(Inviter)£ººúÏþ ½ÌÊÚ

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In a paradigm-shifting article ¡°More is different¡± in 1972, Phil Anderson pointed out that new properties can emerge from a many-body system, which cannot be derived from the constituent particles. In this talk I would argue that even two or three can be regarded as ¡°more¡± in the world of superconductors. I will highlight the unnoticed beauty of multiband of iron-based superconductors, including 1. Emergence of topological band which coexists with superconductivity, leading to the discovery of Majorana zero mode; 2. Interplay of multicomponent superconductivity, leading to the discoveries of exotic paring with time-reversal symmetry breaking and fractional vortex; 3. Contribution of Hund coupling towards pairing in this unique class of superconductors.