Spin Ice - A Magnetic Analogue of Common Water Ice with Emergent Electrodynamics with Deconfined and Fractionalized Excitations
| Date/Time: | Monday, 28 Nov 2016 from 4:10 pm to 5:00 pm |
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| Location: | Phys 0003 |
| Contact: | Gloria Oberender |
| Phone: | 515-294-5441 |
| Channel: | College of Liberal Arts and Sciences |
| Actions: | Download iCal/vCal | Email Reminder |
ABSTRACT
Discovered in 1997, spin ices are frustrated magnetic materials that display a low-temperature state characterized by a nonzero residual magnetic entropy that is intimately related to the proton disorder entropy of common water ice, first rationalized by Linus Pauling in 1935 -- hence the name spin ice. In this talk, I will review the salient aspects of these fascinating systems that have sustained the interests of theorists and experimentalists alike for over fifteen years. In particular, I will emphasize the many layers of "strong emergence" that these systems harbour and comment on their field-theoretic description akin to that of quantum electrodynamics on the lattice with deconfined "matter" excitations and the accompanying gauge boson.