Field induced Lifshitz transition in UPt\(_2\)Si\(_2\): Fermi surface under extreme conditions

We have measured Hall effect, magnetotransport and magnetostriction on the field induced phases of single crystalline UPt\(_2\)Si\(_2\) in magnetic fields up to 60\,T at temperatures down to 50\,mK. For the magnetic field applied along the \(c\) axis we observe strong changes in the Hall effect at t...

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Bibliographic Details
Published inarXiv.org
Main Authors D Schulze Grachtrup, Steinki, N, Süllow, S, Cakir, Z, Zwicknagl, G, Krupko, Y, Sheikin, I, Jaime, M, Mydosh, J A
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 06.03.2017
Subjects
Dependence
Electromagnetism
Fermi surfaces
Hall effect
Magnetic fields
Magnetostriction
Uranium
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Summary:We have measured Hall effect, magnetotransport and magnetostriction on the field induced phases of single crystalline UPt\(_2\)Si\(_2\) in magnetic fields up to 60\,T at temperatures down to 50\,mK. For the magnetic field applied along the \(c\) axis we observe strong changes in the Hall effect at the phase boundaries. From a comparison to band structure calculations utilizing the concept of a dual nature of the uranium 5\(f\) electrons, we find evidence for field induced topological changes of the Fermi surface due to at least one Lifshitz transition. Furthermore, we find a unique history dependence of the magnetotransport and magnetostriction data, indicating that the Lifshitz type transition is of a discontinuous nature, as predicted for interacting electron systems.
ISSN:2331-8422
DOI:10.48550/arxiv.1610.01212