Interpretation of the angular dependence of the de Haas-van Alphen effect in MgB_2

Abstract

We present detailed results for the amplitude and field dependence of the de Haas-van Alphen (dHvA) signal arising from the electron-like $\pi$ sheet of Fermi surface in MgB_2. Our data and analysis show that the dip in dHvA amplitude when the field is close to the basal plane is caused by a beat between two very similar dHvA frequencies and not a spin-zero effect as previously assumed. Our results imply that the Stoner enhancement factors in MgB_2 are small on both the Sigma and Pi sheets.

4 pages with figures. Submitted to PRB

References in corpus (7)

• de Haas-van Alphen effect in single crystal MgB_2
• Anisotropy of superconducting MgB2 as seen in electron spin resonance and magnetization data
• Fermi Surfaces of Diborides: MgB2 and ZrB2
• Determination of the Fermi Surface of MgB${}_2$ by the de Haas-van Alphen effect
• Interpretation of the de Haas - van Alphen experiments in MgB2
• Energy bandstructures of MgB2 and the related compounds
• Damping of the de Haas-van Alphen oscillations in the superconducting state of MgB_2

Cited by in corpus (6)

• Huge linear magnetoresistance due to open orbits in $\gamma$-PtBi${}_2$
• de Haas-van Alphen effect investigations of the electronic structure of pure and aluminum-doped MgB_2
• On the de Haas - van Alphen oscillations in quasi-two-dimensional metals: effect of the Fermi surface curvature
• On the low frequency electromagnetic waves in quasi-two-dimensional metals
• Quantum oscillations in the high frequency magnetoacoustic response of a quasi-two-dimensional metal
• Effect of Fermi-liquid interactions on the low-temperature de Haas - van Alphen oscillations in quasi-two-dimensional conductors