PHYSICS DISSERTATION DEFENSE: Matthew Sorensen
Ph.D. Candidate: Matthew Sorensen
Research Advisor: Ian Fisher
Date: July 14th, 2022
Time: 2:00 PM
Location: McCullough Rm 335
Zoom Link: https://stanford.zoom.us/j/95747093321
Zoom Password: email nickswan [at] stanford.edu (nickswan[at]stanford[dot]edu) for password
Title: Measurement of electric quadrupole and magnetic octupole susceptibilities of certain cubic Praseodymium-containing compounds
Abstract: Magnetic susceptibility measurements have long been used to illuminate properties of magnetic systems. The same susceptibility concepts can, however, also be defined for and expanded to other ordered states, such as the nematic state in iron-based superconductors and ferroquadrupolar orders in rare-earth intermetallics. Here, I will expand this technique to examine multi-dimensional quadrupolar and magnetic octupolar order parameters using the AC elastocaloric effect, and will present relevant measurement results for Pr(Ti,V)2Al20 systems where these order parameters are realized.