Frustrated magnetism in metals

Condensed Matter Seminars

Speaker: Eundeok Mun, Department of Physics, Simon Fraser University Event Date and Time: Thu, 2017-11-16 14:00 - 15:00
Date & Time: Thu, 2017-11-16 14:00 - 15:00
Location: AMPEL #311
Local Contact: Josh Folk
Intended Audience:

To date, magnetic frustration has primarily been studied in insulators. There have been little theoretical and experimental studies in magnetically frustrated conducting materials, where the localized moments reside on geometrically frustrated lattices (pyrochlore, kagome, triangular). For the 4f – electron metallic systems, the competition between Kondo and RKKY interactions results in a great variety of ground states, leading to a rich phase diagram, which can be tuned through a quantum critical point. When the frustration effect is included, the phase diagram may include exotic phases such as spin liquid or unconventional spin density wave. In this talk, I will briefly review several effects due to strong frustration in some metallic correlated electron systems, and discuss a putative spin liquid phase observed in a hexagonal ScAl3C3-type structure.