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Abstract:
We report on the pressure evolution of the Fermi surface topology of the
Weyl semimetal NbP, probed by Shubnikov-de Haas oscillations in the
magnetoresistance combined with ab initio calculations of the band
structure. Although we observe a drastic effect on the amplitudes of the
quantum oscillations, the frequencies only exhibit a weak pressure
dependence up to 2.8 GPa. The pressure-induced variations in the
oscillation frequencies are consistent with our band-structure
calculations. Furthermore, we can relate the changes in the amplitudes
to small modifications in the shape of the Fermi surface. Our findings
show evidence of the stability of the electronic band structure of NbP
and demonstrate the power of combining quantum-oscillation studies and
band-structure calculations to investigate pressure effects on the Fermi
surface topology in Weyl semimetals.
