High magnetic field study of CePd2Si2

Sheikin, Ilya; Gröger, A.; Raymond, Stéphane; Jaccard, Didier; Aoki, D.; Harima, H.; Flouquet, J.

doi:10.1103/PhysRevB.67.094420

Scientific article

English

High magnetic field study of CePd2Si2

Contributors

Sheikin, Ilya; Gröger, A.; Raymond, Stéphane; Jaccard, Didier; Aoki, D.; Harima, H.; Flouquet, J.

Published in

Physical review. B, Condensed matter and materials physics, vol. 67, no. 9

Publication date

2003

Abstract

The de Haas–van Alphen (dHvA) effect in the heavy fermion system CePd2Si2 was studied by magnetic torque measurements in magnetic fields up to 28 T at low temperature. A clear magnetic torque anomaly observed at Bm∼10T applied along the crystallographic a axis indicates a metamagnetic transition. The transition also manifests itself by a sharp drop of the magnetoresistance at low temperature. The dHvA oscillations observed above the transition reveal six different frequencies in the basal plane with the corresponding effective masses from 6me to 23me. Comparison of the angular dependence of the dHvA frequencies with the theoretical band-structure calculations implies that the 4f electrons are itinerant rather than localized inside a magnetically ordered state. One frequency is split into two close satellites, which most likely originate from the up and down spin bands, whose effective masses differ by a factor of 2. The spin splitting gives rise to an apparent anomalous field dependence of the effective mass obtained from the experiment.

UNIGE affiliation entities

Faculté des sciences / Section de physique / Département de physique de la matière quantique

Citation (ISO format)

SHEIKIN, Ilya et al. High magnetic field study of CePd2Si2. In: Physical review. B, Condensed matter and materials physics, 2003, vol. 67, n° 9. doi: 10.1103/PhysRevB.67.094420

Article (Published version)

Identifiers

PID : unige:35728
DOI : 10.1103/PhysRevB.67.094420

Journal ISSN

1098-0121

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30/10/2024 16:52:52

High magnetic field study of CePd2Si2

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Published in

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Abstract

UNIGE affiliation entities

Citation (ISO format)

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Creation

First validation

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Status update

Last indexation