The Graduate School and University Center of The City University of New York
Hybridized Criticality and Elementary Excitations in LiHoF4
Abstract
dc:description.abstract<p>In this dissertation, I study the magnetic properties of LiHoF<sub>4</sub>. Quantum criticality in rare earth ferromagnet LiHoF<sub>4</sub> is complicated by the presence of strong crystal field and hyperfine interactions resulting, e.g., in incomplete mode softening reported by Rønnow et al. We construct a systematic framework for treating elementary excitations in this material across the phase diagram. These excitations interpolate between purely electronic, nuclear and lattice modes and exhibit two-types of quantum critical softening, both complete (as anticipated by elementary treatments, see e.g. Sachdev) but also incomplete, in close correspondence with nuclear scattering results.</p>
Degree
thesis:*- Name thesis:degree_name
- Doctor of Philosophy
- Level thesis:degree_level
- Doctoral
- Discipline thesis:degree_discipline
- Physics
- Grantor
- The Graduate School and University Center of The City University of New York
- Year dc:date.available
- 2015
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Ma, Haifu
- Advisor dc:contributor.advisor
-
- Vadim Oganesyan
- Committee members dc:contributor.committeemember
-
- Eugene Chudnovsky
- Dmitry Garanin
- Pouyan Ghaemi
- Steven Girvin
- Tobias Schafer
Subjects
dc:subject × 3Identifiers
dc:identifier.*- Repository record dc:identifier
- https://academicworks.cuny.edu/gc_etds/1042
- OAI identifier oai:identifier
- oai:academicworks.cuny.edu:gc_etds-2056