Topological Rare Earth Half-Heusler HoPtBi

dc.contributor.advisorPaglione, Johnpierreen_US
dc.contributor.authorRoncaioli, Connor Andrewen_US
dc.contributor.departmentPhysicsen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2020-02-01T06:38:33Z
dc.date.available2020-02-01T06:38:33Z
dc.date.issued2019en_US
dc.description.abstractMagnetic HoPtBi is created and characterized as a new half-Heusler Weyl-candidate. By analogy with the well-studied GdPtBi system we undertake measurements intended to understand the normal state of this material, before extending our study to search for characteristics of Weyl behavior. We find a material with semiconducting properties as well as a low temperature antiferromagnetic transition below 1.25K and a Curie-Weiss paramagnetic system above. Analysis of the magnetoresistance in HoPtBi finds multiple Weyl-like characteristics, including potential chiral anomaly and anomalous Hall angle components. Finally we found significant anisotropic magnetoresistance in HoPtBi dependent on field alignment relative to the crystalline axes of the material, which is unexpected for a paramagnetic compound. We will show that these behaviors indicate a material with a Fermi surface readily tuned by application of magnetic field.en_US
dc.identifierhttps://doi.org/10.13016/ffh0-rkyi
dc.identifier.urihttp://hdl.handle.net/1903/25429
dc.language.isoenen_US
dc.subject.pqcontrolledCondensed matter physicsen_US
dc.subject.pquncontrolledchiral anomalyen_US
dc.subject.pquncontrolledhalf-Heusleren_US
dc.subject.pquncontrolledHoPtBien_US
dc.subject.pquncontrolledWeylen_US
dc.titleTopological Rare Earth Half-Heusler HoPtBien_US
dc.typeDissertationen_US

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