Phys. Rev. B 75, 014413 (2007) [7 pages]Contactless measurements of Shubnikov-de Haas oscillations in the magnetically ordered state of CeAgSb2 and SmAgSb2 single crystalsReceived 22 May 2006; revised 26 September 2006; published 10 January 2007 Shubnikov-de Haas oscillations were measured in single crystals of highly metallic antiferromagnetic SmAgSb2 and ferromagnetic CeAgSb2 using a tunnel diode resonator. Resistivity oscillations as a function of applied magnetic field were observed via measurements of skin depth variation. The effective resolution of Δρ≃20 pΩ allows a detailed study of the SdH spectra as a function of temperature. The effects of the Sm long-range magnetic ordering as well as its electronic structure (4f electrons) on the Fermi surface topology is discussed. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.75.014413
DOI:
10.1103/PhysRevB.75.014413
PACS:
75.50.Ee, 75.50.Cc, 71.18.+y, 72.30.+q
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