de Haas–van Alphen Oscillations for the Field Along c -axis in UTe 2

We performed de Haas-van Alphen (dHvA) experiments in the spin-triplet superconductor UTe 2 for magnetic field along the c-axis above 15 T. Three fundamental dHvA frequencies, named α 1 , α 2 and β corresponding to the cross sections of cylindrical Fermi surfaces (FSs) with large cyclotron effective...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 2023-06, Vol.92 (6)
Main Authors: Aoki, Dai, Sheikin, Ilya, McCollam, Alix, Ishizuka, Jun, Yanase, Youichi, Lapertot, Gerard, Flouquet, Jacques, Knebel, Georg
Format: Article
Language:English
Subjects:
Condensed Matter
Physics
Superconductivity
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Summary:We performed de Haas-van Alphen (dHvA) experiments in the spin-triplet superconductor UTe 2 for magnetic field along the c-axis above 15 T. Three fundamental dHvA frequencies, named α 1 , α 2 and β corresponding to the cross sections of cylindrical Fermi surfaces (FSs) with large cyclotron effective masses (33-43 m 0) were detected. No other fundamental dHvA frequencies were detected at high frequency range, suggesting a cylindrical-shaped electron FS without connecting at the Z point of the Brillouin zone. However, the existence of small pocket FSs associated with extremely heavy masses cannot be fully excluded.
ISSN:0031-9015
1347-4073
DOI:10.7566/JPSJ.92.065002