Using the de Haas-van Alphen effect to map out the closed three-dimensional Fermi surface of natural graphite

Details Using the de Haas-van Alphen effect to map out the closed three-dimensional Fermi surface of natural graphite Using the de Haas-van Alphen effect to map out the closed three-dimensional Fermi surface of natural graphite

2011-11-11

arxiv.org/abs/1111.2674v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

The Fermi surface of graphite has been mapped out using de Haas van Alphen (dHvA) measurements at low temperature with in-situ rotation. For tilt angles $\theta>60^{\circ}$ between the magnetic field and the c-axis, the majority electron and hole dHvA periods no longer follow the $\cos(\theta)$ behavior demonstrating that graphite has a 3 dimensional closed Fermi surface. The Fermi surface of graphite is accurately described by highly elongated ellipsoids. A comparison with the calculated Fermi surface suggests that the SWM trigonal warping parameter $\gamma_3$ is significantly larger than previously thought.

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