Contact-less measurements of Shubnikov-de Haas oscillations in the magnetically ordered state of CeAgSb2 and SmAgSb2 single crystals
Ruslan Prozorov, Matthew D. Vannette, German D. Samolyuk, Stephanie A. Law, Sergey L. Bud'ko, Paul C. Canfield
Abstract
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 Δρ20 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.
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