Click here for a printable version of this page.
Condensed Matter Seminars
Condensed Matter
Thursday, September 8, 2016
11:00 AM
Physics Building, Room 313

Gil Young Cho
[Host: Jeffrey Teo]
Advanced Institute of Science and Technology, Korea
"Topological Phase Transitions in Linenodal Superconductors"

ABSTRACT:
Fathoming interplay between symmetry and topology of manyelectron wavefunctions has deepened understanding of quantum many body systems, especially after the discovery of topological insulators. Topology of electron wavefunctions enforces and protects emergent gapless excitations, and symmetry is intrinsically tied to the topological protection in a certain class. Namely, unless the symmetry is broken, the topological nature is intact. We show novel interplay phenomena between symmetry and topology in topological phase transitions associated with linenodal superconductors. The interplay may induce an exotic universality class in sharp contrast to that of the phenomenological LandauGinzburg theory. Hyperscaling violation and emergent relativistic scaling are main characteristics, and the interplay even induces unusually large quantum critical region. We propose characteristic experimental signatures around the phase transitions in three spatial dimensions, for example, a linear phase boundary in a temperaturetuning parameter phasediagram.




To add a speaker, send an email to
physspeakers@Virginia.EDU.
Please include the seminar type (e.g. Condensed Matter Seminars), date, name of the speaker, title of talk, and an abstract (if available).
